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Indrastuti, Erning, Teti Estiasih, Elok Zubaidah, and Harijono. "Physicochemical Characteristics and In Vitro Starch Digestibility of Spontaneously Combined Submerged and Solid State Fermented Cassava (Manihot esculenta Crantz) Flour." Current Nutrition & Food Science 15, no. 7 (2019): 725–34. http://dx.doi.org/10.2174/1573401314666180515112908.
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Background: High cyanide varieties of cassava must be detoxified before consumption. Several studies showed detoxification of cassava by slicing, submerged fermentation (soaking), solid state fermentation, and drying. One of traditional detoxification is combination of submerged and solid state fermentation and the effect of this processing on cyanide reduction and food properties has not been evaluation yet. Objective: This research studied the effect of solid state fermentation time on physicochemical, starch granule morphology, and in vitro starch digestibility of cassava flour from high cyanide varieties of Malang 4, Malang 6, and Sembung. Methods: Three varieties of high cyanide grated cassavas were soaked for 3 days in ratio of water to cassava 1:1. After draining for 1 hour, grated cassava was placed in a bamboo container and put in a humid place for 3-day solid state fermentation. Fermented grated cassavas were then dried, milled, and analyzed. Results: Solid state fermentation similarly affected cyanide reduction and characteristics of cassava flour for three high cyanide varieties. The detoxification process reduced cyanide to 89.70-93.42% and produced flour with a total cyanide of 8.25-10.89 mg HCN eq/kg dry matters, which is safe to consume. Fermentation decreased cyanide, starch content, titratable acidity, swelling power, and solubility; meanwhile pH, amylose content, water absorption, oil absorption, and in vitro starch digestibility increased in all three varieties studied. Submerged fermentation reduced the pH thus inhibiting the degradation of linamarin and cyanohydrin into free HCN. pH value was increased by solid state fermentation, from 4.43 to 6.90 that optimum for linamarin and cyanohydrin degradation into free HCN. The submerged and solid-state fermentation indeuce spontaneous microbial growth that affected chemical composition of cassava flour. The changes of structure and morphology of starch granules affected pasting properties, and Increased in vitro starch digestibility due to damaged granules. Conclusion: Solid-state fermentation reduced cyanide content of all three cassava varieties into the safe level for consumption, and aiso changed chemical, physical, and functional characteristics and starch digestibility of cassava flour.
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Laka, Martinus, and Emilia S. A. Wangge. "UJI KANDUNGAN PROTEIN PADA BEBERAPA VARIETAS UMBI UBI KAYU ( Manihot esculenta Crantz) YANG DIHASILKAN DI DESA RANDOTONDA, KECAMATAN ENDE, KABUPATEN ENDE." AGRICA 11, no. 1 (2020): 43–50. http://dx.doi.org/10.37478/agr.v11i1.21.
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This study aims to determine the protein content found in all three cassava varieties. The cassava varieties produced in Randotonda Village, namely the cassava variety, the variety of cassava Ai land, and the flour cassava varieties. Test the protein content of several cassava varieties with varied harvest ages using the Kjedhal method. Cassava varieties of Tanah ai varieties with an harvest age of 8 months, cassava tubers, 10 months old verietas, and cassava flour 12 months old.The results showed that the three types of fresh cassava tubers of White variety were 1.59%, Tanah Ai cassava varieties were 1.48% and Wheatwood sweet potato varieties were 1.18%. This is because the White yam variety is 8 months old, while the 10-month AI variety and the Wheat variety are 12 months (1Year).
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Kusmaria, Kusmaria, Ratna Winandi Asmarantaka, and Harianto Harianto. "ANALISIS PENENTUAN RAFAKSI DAN PENGARUHNYA TERHADAP PILIHAN SALURAN PEMASARAN PETANI UBI KAYU DI KABUPATEN LAMPUNG TENGAH." Forum Agribisnis 6, no. 2 (2017): 129–44. http://dx.doi.org/10.29244/fagb.6.2.129-144.
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Cassava becomes an important commodity in Indonesia because Indonesia is one of the major producer of cassava in the world. Besides exporting cassava, in fact Indonesia also imported cassava in large quantities. Altough the price of cassava was increasing in Lampung but the production and harvested area were decreasing, moreover factory and trader also set rafaksi on cassavas sold by farmers. Rafaksi is a penalties quantity to assess the quality of cassava farmers. Cassava marketing channels play role in determining the price and rafaksi that received by farmers. The aims of this research are (1) to analyze mechanism of determining rafaksi (2) to analyze price received by farmers’ after obtained rafaksi (3) analyze influence rafaksi to choice of marketing channels cassava farmers in Central Lampung Regency. Primary data were collected rendomly from 74 respondents. Data were analyzed by describe, correlation and binary logistic regression. The results showed that in the perception of farmers, determination of cassava rafaksi determined by several criteria such as the age of harvest, varieties, aci levels and the amount of dirt but not obtained a measure to ensure that criteria and only use the visual observation. The results of correlation analysis showed that there was no statistically significant connection between harvest time and the varieties of cassava with rafaksi of cassava which received by farmers. The result of binary logistic regression analysis showed that rafaksi loan significantly affected the choice of marketing channels.
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Abaca, Alex, Emmanuel Odama, Alfred Komakech, Baron Asiku, Andema A. Andrews, and Sadik Kassim. "Evaluation of Newly Released Cassava Varieties for Yield Performance, Reactions to Cassava Diseases and Farmers’ Preference in Adjumani District of Uganda." Journal of Agricultural Science 13, no. 4 (2021): 84. http://dx.doi.org/10.5539/jas.v13n4p84.
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Cassava viral diseases particularly cassava brown streak disease (CBSD) and cassava mosaic disease (CMD) have put pressure on cassava breeders to develop varieties that are resistant/tolerant to them. Several cassava varieties have been rolled out to farmers with the latest being NAROCASS series that are tolerant to these diseases. The yield performance of these new varieties have not been documented in some sub zones like Adjumani district that falls within a major West Nile agro-ecology of Uganda. Therefore this study sought to established yield performances of, reactions to major diseases, and farmers’ preference to these newly released cassava varieties in Adjumani. Results showed significant (P ≤ 0.05) differences among cassava varieties and experimental sites for all the parameters evaluated. Average yield performance by varieties were in the order of a local cassava—Alifasia (8.7 t/Ha) lowest, NAROCASS 2 (18.55 t/Ha), NASE 14 (33.97 t/Ha), NASE 19 (41.26 t/Ha), and NAROCASS 1 (41.71 t/Ha) highest. CMD foliar symptom was present at all sites on a local cassava—Alifasia, and on NAROCASS 1 in Ayiri parish, Ukusijoni sub-county. CBSD foliar symptoms were observed on off-types (TME 14) in the plot of NASE 14 in Miniki Parish only whereas CBSD root necrosis was observed at all sites on the local cassava—Alifasia, and on NASE 19 in Maaji parish, Ukusijoni sub-county. Cassava root rot disease was localised in Ukusijoni sub-county only. Farmers’ preferences to these newly released cassava varieties were in the order of NASE 19 (40.96%), NAROCASS 1 (24.86%), NAROCASS 2 (15.82.28%), NASE 14 (15.54%), and a Local cassava—Alifasia (2.83%). Result from this study strengthens the information gap in the breeding process towards developing a cassava variety with farmer-preferred attributes, and can also inform the utilisation of these improved cassava varieties in Adjumani district.
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Amarullah. "Evaluation of quality and variety of Indonesian cassava (Manihot esculenta Crantz)." International Journal of Agricultural Research, Innovation and Technology 10, no. 1 (2020): 108–16. http://dx.doi.org/10.3329/ijarit.v10i1.48102.
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The evaluating cassava varieties for productivity necessary to assess the cassava stem characteristics for their suitability as planting material and to improve the capability of cassava farmers to select good quality cassava varieties. Cassava varieties are generally distinguished from each other by their morphological characteristics, which include leaf, stem and tuber colour. The cassava planting material used in this study and some of characteristics by five cassava varieties, consisted of mature stem cuttings of about 20 cm in length, containing between 10 and 12 nodes and planted in a vertical position along the top of the ridges. Each plot consisted of 30 plants, with date being taken from ten plants within each plot. Cassava varieties Malang-6 presented the highest yield average is 13.81 tones ha-1 followed by Singgah and Adira-4 i.e. 11.98 t ha-1 and 11.11 t ha-1 of different varieties 1 yang Ketan, which only weighs 6.63 t ha-1. Harvest index varieties of Adira-4, Malang-6, UJ 5 and Singgah were found 0.78, 0.77, 0.77 and 0.76, respectively higher and significantly different IP varieties of glutinous Ketan is 0.58. Malang varieties and Malang-6 that produces the highest tuber weight, has a low dry matter content is 5.65% and 5.62%. The Ketan varieties and UJ-5 has a tuber weight was significantly lower with dry matter content higher than that dried 8.69% and 8.68%. The UJ-5 varieties has a tuber weight starch HCN 230,17 higher and significantly other variety.
 Int. J. Agril. Res. Innov. Tech. 10(1): 108-116, June 2020
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Onyeneke, Robert Ugochukwu, Chukwuemeka Chinonso Emenekwe, Jane Onuabuchi Munonye, et al. "Adoption of Bio-fortified Pro-Vitamin-A Cassava and Health Outcome of Farming Households in Abia and Anambra States Nigeria." Journal of Agricultural Extension 24, no. 2 (2020): 81–91. http://dx.doi.org/10.4314/jae.v24i2.9.
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This study examined the relationship between the adoption of bio-fortified provitamin- A cassava varieties and farming households’ health outcomes using cross sectional data obtained from 318 cassava farmers in southeast Nigeria. The data was analysed using binary logistic regression, propensity score matching of treatment effects and percentages. The study found that number of children under five, household size, education of head of household, extension service, ownership of television, radio, mobile phone and tricycle, membership of cooperative societies, and access to credit were the significant predictors of adoption of pro-vitamin-A bio-fortified cassava varieties in the States. The study also found that the main constraints militating against adoption of pro-vitamin-A bio-fortified cassava include decaying of roots immediately after maturation,high cost of cassava stem, and high moisture content. The estimate of the effect of the adoption of bio-fortified pro-vitamin-A cassava varieties onincidence of vitamin-A deficiency related diseases was significant with an average treatment effect on the adopters of -0.463. The adoption of bio- fortified pro-vitamin-A cassava varieties has substantial effect on the reduction of vitamin-A deficiency related health outcomes. There is need for wider awareness and dissemination of the varieties among cassava farmers, while interventions should target the promotion of both production and consumption of such cassava varieties.
 Key words: adoption of bio-fortified cassava varieties; vitamin A deficiency related diseases
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Shanti, Ratna, and Ratna Nirmala. "Aplikasi Pupuk NPK Dan Bokashi Serta Interaksinya Terhadap Pertumbuhan Dan Produksi Tiga Varietas Ubi Kayu (Manihot escculenta. L) Di Kutai Timur." Agrifarm : Jurnal Ilmu Pertanian 6, no. 1 (2017): 1. http://dx.doi.org/10.24903/ajip.v6i1.1.
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The purpose of this study to determine the effect of fertilization on the production of three varieties of cassava that is Darul Hidayah, Gajah and Varietas Local. The field experiment was conducted for 9 months starting from April to December 2016. Locations trial in Sangata Selatan, DistrictKutai Timur.The design is split plot design arranged in a factorial treatment was repeated 3 times (R) Treatment Varieties (V) as the main plots and fertilizer treatments (P) as subplot. The results showed that the inorganik fertilizer (NPK), organik (Bokashi) and combinations thereof capable of producing tubers each, 124 tons per hectares, 130.44 tons per hectares, and 134.67 tons per hectares and 99.11 ton per hectares as a kontrol s. Fertilization treatment of three varieties cassava tubers can increase production 20%. 23.8% and 26% respectively as a compared with kontrol s. While the tuber production between varieties Darul Hidayah and Gajah 148.50 tons perhectares and 132, 33 ton per hectares while the local variety 85.33 tons per hectares. The increase in the tubers from 3 varieties namely 42.5% and 35.6% compared to local varieties. Keywords: anorganik and organik fertilizers, varieties of cassava
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Laya, Alphonse, Benoît Bargui Koubala, Habiba Kouninki, and Elias Nchiwan Nukenine. "Effect of Harvest Period on the Proximate Composition and Functional and Sensory Properties of Gari Produced from Local and Improved Cassava (Manihot esculenta) Varieties." International Journal of Food Science 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/6241035.
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This study is aimed at evaluating the proximate composition and functional and sensory characteristics of gari obtained from five cassava varieties (EN, AD, TMS92/0326, TMS96/1414, and IRAD4115). These cassavas were harvested during the dry season 12 months after planting (12MAP) and in the rainy season (15MAP). Results showed that the characteristics of gari varied significantly (p<0.05) with the variety and the harvest period. Gari from EN cassava harvested at 12MAP had the highest total carbohydrates (78.07% dry weight), starch (61%), and proteins content, while gari from TMS 96/1414 variety (12MAP) had high amino acids (10.25 mg/g) and phenolic compounds (9.31 mg/g) content. The gari from IRAD4115 had the highest value of ash content (20.62 mg/g) at 12MAP. The soluble sugar content was high in the gari from cassava harvested at 12MAP while free cyanide reduced significantly in gari from cassava harvested at 12MAP. The water absorption capacity, swelling power, and bulk density were significantly (p<0.05) high in the gari from EN cassava variety at 12MAP. Compared to commercial gari (3.30), gari from EN local cassava had the best overall acceptability (4.35) followed by those obtained from TMS92/0326 and TMS92/1414 varieties, respectively.
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MUTHURAJA, Raji, and Thangavelu MUTHUKUMAR. "Arbuscular Mycorrhizal and Dark Septate Endophyte Fungal Association in Cassava (Manihot esculenta Crantz) Varieties, Southern India." Notulae Scientia Biologicae 11, no. 1 (2019): 154–66. http://dx.doi.org/10.15835/nsb11110397.
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The study examined the root characteristics, type of arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungal associations and their extent of colonization in 13 widely cultivated cassava (Manihot esculenta Crantz) varieties in southern India. Root and associated soil samples of each cassava variety were collected from Salem and Kolli Hills of the Eastern Ghats in south India. In addition, we also investigated the relationship between the extent of colonization of AM, DSE fungal and AM fungal spore communities and soil characteristics for each cassava variety. Roots of all the cassava varieties were colonized by AM fungi and 12 varieties had co-colonization of DSE fungi. The AM morphology in all the cassava varieties was of an intermediate type with intercellular and intracellular linear hyphae and arbusculate coils. In addition, we found high AM colonization rates (73-89%) but only moderate rates by DSE (22-68%) fungi. We also found 17 AM fungal spore morphotypes and their abundance varied significantly among cassava varieties. In addition, different physicochemical properties of soils may possibly increase AMF diversity, while different varieties of cassava are commonly associated with differing levels of AM and DSE fungi colonization with soil factors potentially influencing the symbiosis.
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Devy, Nirmala F., Abd Aziz Syarif, and Aryawaita Aryawaita. "Identification of Morphology and Quality Character Determinant of Local Cassava [Manihot esculenta Crantz] Germplasm from West Sumatra." Buletin Plasma Nutfah 24, no. 1 (2018): 53. http://dx.doi.org/10.21082/blpn.v24n1.2018.p53-62.
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<p>Local germplasm of Cassava (Manihot esculenta Crantz) have an economic potential important for West Sumatra community. The local cassava has high morphological diversity. To distinguish different type of cassava, identification of morphology and tuber quality were required. The objective of this research was to identify morphology and tuber quality determinant characters of West Sumatra local Cassava. An analysis was performed on ten local cassava originated from four districts of West Sumatra and three other released varieties. Morphological characterization was performed based on International<br />Institute of Tropical Agriculture (IITA) standard descriptors, whereas physical and chemical analyses were carried out in the Agricultural Product Technology Laboratory at University of Andalas, Padang. The research was conducted at Sukarami Experimental Station, Solok Regency in March 2015–February 2016. Morphological characters and data quality were first analyzed by principal component analysis (PCA). The PCA analysis resulted 4 major component axes contributing to a total diversity of 78, 83, and 81.3% on plant morphology, tuber quality, and morphology and tuber color, respectively. Based on those<br />diversities, the thirteen varieties of cassava could be grouped into six clusters. Special characters that distinguishing between groups was the number of lobes, leaf stem length, shoot color, and leaf width. Meanwhile, based on its chemical content and morphology of tubers, the cassavas were grouped into five clusters, with the distinguishing characters were carbohydrate content, protein content, and tuber color. The varieties that have the highest weight of the tuber/plant were Kuning and Roti 2, with a production of 203–380% higher than the released varieties. On their tubers, varieties that had the lowest levels of HCN were Tangkai Merah-1, Dumai, and Roti 2, whereas those with starch content &gt;35% were Sanjai Padang Jariang, Jurai Merah, Kuning, Roti 2, and Hijau Pesisir Selatan. Each variety has its own specific morphological characters, tuber morphology, and chemical composition.</p>
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Acheampong, Patricia Pinamang, Victor Owusu, and Gyeile Nurah. "How does Farmer Preference matter in Crop variety Adoption? The case of Improved Cassava varieties’ Adoption in Ghana." Open Agriculture 3, no. 1 (2018): 466–77. http://dx.doi.org/10.1515/opag-2018-0052.
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Abstract Ghana’s National Agricultural Research Systems have officially released 24 improved cassava varieties, which are high yielding, disease and pest resistant and early maturing. However, adoption of these varieties by mainly smallholder farmers is very low, leading to low yields and incomes. The purpose of this study was to contribute to the development and adoption of improved cassava varieties by assessing the preferences of farmers for cassava variety traits. The study explored Ghanaian cassava producers’ decision-making behaviour towards variety selection and the values they place on different cassava traits. It employed mixed logit and latent class models to estimate the values place on cassava traits, by using choice experiment data of 450 cassava producers from Ghana. Results revealed farmers’ preferences for longevity of root storage in the soil and disease resistance traits of cassava. The latent class model revealed that male youths were more likely to participate in improved varieties that take into account in-soil storage and multiple usages. The need for agricultural research systems to focus on other traits in addition to high yielding and disease resistance in order to boost adoption and increase production is imperative.
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Livoi, ANTONY, A. W. Mwang' ombe, E. Nyaboga, D. Kilalo, and E. Obutho. "Prevalence and Distribution of Cassava Bacterial Blight in the Kenyan Coast." Agricultural Science 3, no. 1 (2021): p7. http://dx.doi.org/10.30560/as.v3n1p7.
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Cassava (Manihot esculenta Crantz) is one of the staple food crops grown in Kenya. Diseases remain one of the major constraints for cassava production. Apart from other major viral diseaes Cassava mosaic and Cassava brown streak, Cassava bacterial blight (CBB) caused by Xanthomonas axonopodis pv manihotis and Xanthomonas axonopodis pv cassavae are a major constraint in cassava production in Kenya. This study was done to identify the prevalence, distribution, and farmers' knowledge of cassava bacterial blight in the coastal region of Kenya. A survey was conducted involving 250 farmers who were randomly selected from two regions of Kilifi and Taita Taveta counties. Among the 250 farmers interviewed, 61.6 % identified cassava bacterial blight symptoms in their farms. The main varieties found growing in the region were Tajirika, Karembo, Kibandameno, and Shibe which were all confirmed by farmers as susceptible to cassava bacterial blight. During the survey, plant samples were randomly collected in the field. Out of the 70 samples collected, 40 of them were confirmed positive with X.pv manihotis and X.pv cassavae which cause cassava bacterial blight. The study concluded that there is a widespread of cassava bacterial blight in Kilifi and Taita taveta counties. Kilifi County had the highest incidence of 22% with Taita Taveta having the lowest incidence of 13%. Kilifi County had a higher severity of 8% as compared to Taita Taveta which had 5% Severity. Therefore there is a need for a proper management program to be deployed in managing the disease to enhance cassava production in the region.
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Niyibituronsa, Marguerite, Jean Bosco Shingiro, Madjaliwa Nzamwita, et al. "Chemical Characterization and Acceptability of Eight Cassava Varieties Introduced in Rwanda." Journal of Food Research 10, no. 3 (2021): 1. http://dx.doi.org/10.5539/jfr.v10n3p1.
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Cassava is a staple food and an important and cheap source of carbohydrate in Rwanda. However, the nature and chemical composition of cassava roots limit its proper use as food due to its toxicity and short shelf life. The cyanogenic glucosides found in the cassava roots are responsible for the toxicity. The aim of the study was to characterize the chemical profile and consumer acceptability of paste from eight cassava varieties processed into flour using four processing methods. The cassava samples were harvested from trials conducted at Rubona Station of Rwanda Agriculture and Animal Resources Development Board. Four processing methods were used, namely, Cassava grated fermented, Cassava roots fermented, Cassava grated no fermented and Cassava roots no fermented. Pressing was done before drying the products to obtain the flour. At each stage of processing, the samples were prepared for laboratory analysis of dry mater, titratable acidity, cyanhydric acid and crude fiber by Rwanda Standards Board laboratory. Cassava flour was made into paste and sensory evaluation was conducted to evaluate the acceptability of the eight cassava varieties. The sensory attributes for the Ugali tested was significantly different (P&lt;0.05). The method of grating before fermentation gave the most tasty Ugali than cassava root fermented. The more prefered varieties were GAHENE/2 and SEMAK 150/452 followed by BULK 13, MH95/0091 and NASE 14. The chemical analysis done for the 8 cassava varieties flour from the 4 processing methods exhibited the acceptable acidity and the NASE 14, Gahene/2 and Bulk 13 had the lowest cyanide hydrogen.
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Ogunwole, O. A., F. D. Abayomi, S. O. Oladimeji, et al. "Performance, serum biochemical indices and crude protein utilisation by broiler chickens fed diets based on two varieties of cassava (Manihot esculenta Crantz) grits I. Starter Phase." Nigerian Journal of Animal Production 44, no. 1 (2020): 151–61. http://dx.doi.org/10.51791/njap.v44i1.765.
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Effect of dietary inclusion of cassava grits (Manihot esculenta Crantz) from two cassava varieties TME 419 and TMS 01/1371 as replacement for maize on performance, serum biochemical indices and crude protein utilization of broiler chicks was investigated in a three-week trial with Abor Acre plus broiler chicks (n=210). In a completely randomized design, birds were allotted to seven treatments, each replicated thrice with 10 birds per replicate. Diet 1 comprised 50 % maize and 0 % cassava grits, diets 2, 3 and 4 had their respective maize content replaced at 25, 50 and 75 % with cassava grits from TMS 01/1371 while diets 5, 6 and 7 was replaced correspondingly with cassava grits from TME 419 at 25, 50 and 75 %, respectively for a duration of 21-day. Increased dietary cassava grits significantly lowered (P<0.05) weight gain and metabolizable crude protein of broiler chicks. Birds on diets 3, 4, 6 and 7 had similar weight gain, feed conversion ratio and metabolizable crude protein. Except for significantly increased (P<0.05) total protein and alkaline phosphatase due to interactions of cassava varieties and inclusion levels, effects of cassava varieties and inclusion levels on other serum indices were similar (P>0.05). Regression of metabolizable crude protein on graded cassava grit inclusion for both varieties were negative and significant (P<0.05) for TME 419 (R2 =0.355) and highly significant (P<0.01) for TMS 01/1371 (R2 =0.6639). Both graphs clearly depicted decreased metabolizable crude protein due to increased cassava grits in the diets. Increased dietary cassava grits of both varieties resulted in lowered metabolizable crude protein and serum indices with concomitant increased feed conversion ratio of broiler starter chicks.
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Amarullah, Amarullah, D. Indradewa, P. Yudono, and B. H. Dan Sunarminto. "Photosynthetic Activity of Superior Varieties and Local Cassava (Manihot esculenta Crantz) Indonesia." Journal of Agricultural Science 8, no. 8 (2016): 194. http://dx.doi.org/10.5539/jas.v8n8p194.
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<p>Productivity relates to the ability of photosynthesis. Therefore, the process of photosynthesis is important to promote growth, development and yield. There are many varieties of superior and local cassava (<em>Manihot esculenta </em>Crantz) in Indonesia either unknown of their photosynthesis character. The study aims to investigate the characteristics of photosynthesis and influences of physiological parameters associated the activity of photosynthesis in cassava plants. A study was conducted on Inceptisol soils at UGM research at altitude 113 m above mean sea level between January and November 2014. The treatment of single factor is cassava varieties consist of Adira-4, Malang-6, UJ-5, Singgah and Ketan arranged in a randomized block design with three replications. Cuttings size ±20 cm are planted upright with a distance of 1 m × 1 m (population of 10,000 plants ha<sup>-1</sup>). After six months, observation has been done of characters and physiological activities at 10 samples per plots and per varieties. The results showed that there are differences in the density of stomata, stomata aperture width, water content, chlorophyll content and photosynthesis rate between varieties of cassava. Singgah varieties have the Ksd highest with medium Lbs and varieties local of Ketan lowest Ksd. The group of superior varieties of cassava have Kkt medium, but varieties of Malang-6 have Kkt slightly higher and the highest rate of photosynthesis. Singgah varieties have lowest leaves Kkt and medium rate of photosynthesis. Local varieties of Ketan have the highest Kkt and lowest rate of photosynthesis. Group cassava superior varieties had higher photosynthesis rate than the local varieties, local varieties Singgah has a moderate rate and higher than Ketan. Stomata density and the concentration of CO<sub>2</sub> correlated positively and significantly affect the rate of photosynthesis while transpiration increase conductivity stomatal but negatively correlated to the rate of photosynthesis.</p>
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Diniyah, Nurud, Nugraha Yuwana, NFN Maryanto, Bambang Herry Purnomo, and Achmad Subagio. "KARAKTERISASI SERA MOCAF (MODIFIED CASSAVA FLOUR) DARI UBIKAYU VARIETAS MANIS DAN PAHIT." Jurnal Penelitian Pascapanen Pertanian 15, no. 3 (2018): 131. http://dx.doi.org/10.21082/jpasca.v15n3.2018.114-122.
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<p>Mocaf (tepung kasava termodifikasi/<em>Modified Cassava Flour</em>) dapat dibuat dari berbagai varietas ubikayu dengan lama fermentasi yang bervariasi. Hasil samping dari produksi Mocaf berupa komponen tidak lolos ayakan 100 mesh yang disebut “Sera”. Penelitian ini bertujuan untuk mengetahui pengaruh perbedaan varietas (Cimanggu dan Kaspro) dan lama fermentasi (0, 12, dan 24 jam) terhadap sifat fisikokimia sera Mocaf. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan 2 faktor yaitu varietas ubikayu dan lama fermentasi. Parameter yang dianalisis meliputi sifat fisik dan kimia seperti derajat putih, densitas kamba, proksimat, kadar serat kasar, dan kadar hemiselulosa-selulosa. Hasil penelitian menunjukkan bahwa sera Mocaf dari ubikayu varietas Cimanggu dan Kaspro memiliki karakteristik berupa derajat putih berkisar 84,61-86,05%, densitas kamba 0,58-0,75 g/mL, kadar air 11,79-13,73%, kadar abu 0,61-2,68 %, kadar protein 1,31-2,34 %, kadar lemak 1,50-2,14 %, kadar serat kasar 18,11-22,76 %, kadar hemiselulosa 29,20-34,21 %, dan kadar selulosa 18,47-21,89 %. Sera sebagai limbah Mocaf masih berpotensi digunakan sebagai bahan baku produk tinggi serat seperti <em>cone </em>es krim, roti tawar, dan <em>cookies</em>.</p><p> </p><p><strong>(modified cassava flour) from sweet and bitter cassava varieties</strong></p><p>Mocaf (Modified Cassava Flour) can be made from various varieties of cassava with various duration of fermentation. The by-product of Mocaf, a component that does not pass 100-mesh sieve, is called “Sera”. The aim of this study was to determine the effect of different cassava varieties (Cimanggu and Kaspro) and duration of fermentation (0, 12, and 24 h) on the physicochemical properties of Mocaf sera. The experimental design used in this study was Randomized Block Design with 2 factors, namely cassava varieties and fermentation duration. Parameters observed included physical and chemical properties, i.e. whiteness, bulk density, proximate crude fiber and hemicellulose-cellulose content. The results showed that the characteristics of sera Mocaf from Cimanggu and Kaspro varieties were as follows: 84.61-86.05% whiteness, bulk density of 0.58-0.75 g /mL, moisture content of 11.79-13.73%, ash content of 0.61-2.68%, protein content of 1.31-2.34%, fat content of 1.50-2.14%, crude fiber content of 18.11-22.76%, hemicellulose content of 29.20-34.21%, and cellulose content of 18.47-21.89%. Sera as the waste of Mocaf processing had potential to be utilized as raw material for high fiber products such as ice cream cone, bread, and cookies.</p><p><strong><br /></strong></p>
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Modeste, Kouassi Kan, Mahyao Adolphe, N’zue Boni, Koffi Edmond, and Koffi Camille. "Status of Cassava (Manihot Esculenta Crantz) in Côte d’Ivoire: From Production to Consumption and Evaluation of Technology Adoption." European Scientific Journal, ESJ 14, no. 9 (2018): 285. http://dx.doi.org/10.19044/esj.2018.v14n9p285.
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The current state of cassava production and technology level as well as commercialization and consumption aspects were studied in Côte d’Ivoire. The study involved a sample of 570 actors of the value chain randomly selected in three (3) agro ecological regions (south, west and centre). Using a baseline survey questionnaire, 150 producers, 195 transformers and 195 consumers were interviewed. Results showed that farmers and consumers households are in majority led by men (80 and 61%) while transformers households are led by women (81%). Concerning the level of adoption of cassava technologies, it was found that about 35% of cassava growers are aware about the new cassava varieties and more than 80% agreed to use them. The analysis performed in agro ecological regions revealed that traditional varieties are preferred (40 % to 90 %) to improved varieties. Improved varieties, Bocou 1 (10.67%), TMS4 (2)1425 (0.67%) and Bocou 2 (0.67%) are less preferred for cultivation in spite of high yields, food processing or taste qualities, respectively mentioned by farmers. More than 50 % of farmers agreed to adopt the Rapid Seed Multiplication technique. Contrary to the localities of Man (West) and Bonoua (South) where pounded cassava is more consumed (89.29% and 66%), dehydrated cassava (Attieke) food is the most consumed in other localities surveyed. In spite of the high yield of improved varieties and the desire of cassava growers to adopt new cassava technologies, research and extension services should be reinforced taking into account agro ecological specificities of production, commercialization and consumption.
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Obojiofor, Ebuka F., James O. Okechukwu, Emmanuel I. Victor, and Roland Anikwenze. "Production, Physicochemical and Organoleptic Evaluation of Bread Made from Composite Wheat-Cassava Flour." Advances in Science and Technology 107 (June 28, 2021): 29–36. http://dx.doi.org/10.4028/www.scientific.net/ast.107.29.
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Abstract Cassava (Manihot esculenta crantz) varieties: TME 419 (419), TMS 98/0581(sweet), and UMUCASS 37 (yellow) were processed into flour. Comparative studies of their physicochemical and organoleptic properties were evaluated. Proximate composition was done using the standard method of Association of Official Analytical Chemists. The sensory analysis of the cassava flour varieties was evaluated by baking bread with its wheat blends using different ratios. Results obtained showed that the moisture, crude fiber, ash content, carbohydrate content and energy value of the three cassava flour varieties differ significantly (p≤0.05); while for crude protein, the values were not significantly different (p≥0.05). Also, the swelling power, boiling point, amylose, foam capacity, and emulsification capacity of each sample was significantly (p≤0.05) different with TME 419 cassava flour having the highest values in all but foam capacity. The combination levels for bread containing wheat and cassava varieties of 75% and 25%, respectively was found to be acceptable while, bread made from 100% TME 419 cassava flour was not acceptable due to its poor sensory attributes. It was found that the carbohydrate content of TMS 98/0581 was higher than the other cassava flour samples. Breads baked with 75% wheat flour and 25% cassava flour were accepted by the sensory panel in terms of appearance, taste and texture. These results showed that high quality cassava flour has potential to replace part of the wheat flour in the production of bread since there is a wide acceptance amongst the judges.
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Wardani, Nila, Aunu Rauf, Wayan Winasa, and Sugeng Santoso. "PARAMETER NERACA HAYATI DAN PERTUMBUHAN POPULASI KUTU PUTIH Phenacoccus manihoti Matile-Ferrero (HEMIPTERA: PSEUDOCOCCIDAE) PADA DUA VARIETAS UBI KAYU." Jurnal Hama dan Penyakit Tumbuhan Tropika 14, no. 1 (2014): 64–70. http://dx.doi.org/10.23960/j.hptt.11464-70.
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ABSTRACTThe life history and population growth parameters of mealybug Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on two cassava varieties. The development, reproduction, and population growth parameters of the cassava mealybug, Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on two cassava varieties were studied in laboratory. The varieties tested were UJ-5 with high cyanide content (>100 mg per kg) dan Adira-1 with low cyanide content (27.5 mg per kg). Our research revealed that P. manihoti performances were highly affected by cassava varieties. Incubation period of eggs of P. manihoti were 7.93 ± 0.09 and 8.33 ± 0.11 days, nymphal development periode 12.32±0.13 and 15.67 ± 0.13 days, respectively on UJ-5 and Adira-1. Fecundity averaged 386.37 ± 5.83 on UJ-5 and 318.67±2.81 eggs on Adira-1. Intrinsic rate of increase (rm) were 0.258 ± 0.001 on UJ-5 and 0.220 ± 0.001 on Adira-1. Mean generation time (T) on UJ-5 and Adira-1 were 22.795 ± 0.050 and 25.532 ± 0.047 days, repectively. Our findings showed that variety UJ-5 was more suitable for development and population growth of the cassava mealybug.
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Hartanti, Lucky, Anang Syamsunihar, and Ketut Anom Wijaya. "Kajian Agronomis dan Kualitas Tepung Berbahan Ubi Kayu Lokal." Pro Food 3, no. 2 (2018): 247. http://dx.doi.org/10.29303/profood.v3i2.57.
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Cassava flour has a good potential to substitute wheat flour for various food products and have a good opportunity to developed. The farmers prefer to cultivate local types of cassava compared to superior varieties national. Fresh cassavas contain cyanide acid (HCN), which is harmful to health. Knowledge and skills in processing of cassava is needed to produce fresh cassava become safety product. The aimed of this research was to conducted to: 1) Examine the agronomic potential of local cassava as raw material for cassava flour industry , 2) Study quality cassava flour produced from three different types of local cassava. Cassava used in this study was a local type i.e.: “ketan”, “Pb”, “Sambung”. The method of processing cassava flour was dried cassava method “gaplek”, wet method “tapioka fermentation method “mocaf”. In general all types of local cassava had a good agronomic potential and safe to be processed into cassava flour. Mocaf from “Pb” type gave the best result. The best tapioca was produced from “ketan” type of cassava.
 
 Key Words: Cassava Flour, HCN, Local Types of Cassava
 
 ABSTRAK
 
 Tepung ubi kayu mampu menggantikan tepung terigu untuk berbagai produk pangan dan berpeluang bagus untuk dikembangkan. Petani lebih suka membudidayakan ubi kayu jenis lokal dibandingkan dengan varietas unggul nasional. Ubi kayu segar mengandung HCN yang berbahaya bagi kesehatan. Diperlukan teknik yang baik untuk mengolah ubi kayu menjadi produk yang aman dikonsumsi oleh masyarakat. Tujuan penelitian ini adalah: 1) Mengkaji potensi agronomis ubi kayu jenis lokal sebagai bahan baku industri tepung ubi kayu.2) Mengkaji kualitas tepung ubi kayu yang dihasilkandari tiga jenis ubi kayu lokal yang berbeda Ubi kayu yang dipakai dalam penelitian adalah ubi kayu lokal jenis ketan, Pb dan ubi sambung. Metode pengolahan tepung ubi kayu yang dilakukan adalah metode kering gaplek, metode basah tapioca dan metode fermentasi mocaf. Secara umum semua ubi kayu jenis lokal berpotensi agronomis dan aman untuk diolah menjadi tepung ubi kayu. Mocaf dari ubi jenis Pb memberikan hasil terbaik. Tapioka terbaik dihasilkan dari ubi kayu jenis ketan.
 
 Kata Kunci :HCN, Tepung ubi kayu, Ubi kayu lokal
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OKO, James I., Bonaventure C. ECHEZONA, Christian U. AGBO, and Stella O. MUOJIAMA. "Abundance of Two Generalist Insect Pests of Cassava (Manihot esculenta Crantz) as Influenced by NPK Fertilization." Notulae Scientia Biologicae 11, no. 2 (2019): 258–65. http://dx.doi.org/10.15835/nsb11210465.
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The influence of NPK fertilizer on the population of two generalist pests, grasshopper (Zonocerus variegatus) and termites (Isoptera spp.) on some cassava varieties (Manihot esculenta Crantz), was investigated in a field trial carried out at Teaching and Research Farm of Department of Crop science, University of Nigeria, Nsukka. The treatments comprised all possible combinations of four rates of fertilizer application (0 kg/ha, 200 kg/ha, 400 kg/ha and 600 kg/ha), four improved cassava varieties (‘TMS 01-1368’, ‘TME 419’, ‘TMS 98-05-50’, ‘TMS 05 10’) and three modes of fertilizer application (Single, Split and Split-split) arranged in a factorial experiment and laid out in a randomized complete block design (RCBD). There were three replications of each treatment. Data were collected on Z. variegatus and termite incidences. In each season, incidence of Z. variegatus on cassava showed significant (p<0.05) difference among varieties. Varieties ‘TMS 01-1368’, ‘TMS 05 10,’ and ‘TMS 98-05-05,’ were significantly (p<0.05) more susceptible to the pest compared to variety ‘TME 419’. Incidence of termites on cassava differed significantly (p<0.05) among varieties in the late season and variety TMS 05 10’ was more susceptible to this pest than other varieties. Rates of NPK fertilizer had significant (p<0.05) influence on Z. variegatus incidence only. Application of various NPK fertilizer rates increased the incidence of Z. variegatus on the varieties compared to plots without fertilizer (0 kg/ha). The abundance of Z. variegatus in cassava field was influenced by fertilization and variety while termites were influenced by variety.
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DJE BI, IRIÉ R., KOUADIO I. KOUASSI, KOUAMÉ K. KOFFI, KOUAKOU L. KOUAKOU, JEAN-PIERRE BAUDOIN, and BI IRIÉ A. ZORO. "EVALUATION OF CASSAVA VARIETIES FOR WEED TOLERANCE ABILITY." Experimental Agriculture 54, no. 3 (2017): 443–51. http://dx.doi.org/10.1017/s0014479717000151.
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SUMMARYMany types of weeds occur in cassava fields causing enormous yield losses due to competition for nutrients, light and space. The purpose of this study was to evaluate the growth and yield of four traditional varieties of cassava (Bonoua Blanc, Tambou, Yassé and Six mois) produced in Côte d'Ivoire and select the highest tolerant variety to weed competition. Six treatments were induced by varying the period in which cassava varieties were grown with weeds. Varieties and exposure time to competition with weeds significantly affected the productivity of cassava. The number of leaves per plant (NLP), the number of tuberous roots per plant (NTRP) and the weight of tuberous roots per plant (WTRP) declined with increasing duration of weed presence. After an initial period of weeding, the first four months of grassing proved critical for the four varieties. Despite the presence of weeds, Bonoua Blanc has higher growth and yield than Tambou, Yasse and Six mois. This suggests that Bonoua Blanc was more tolerant to weed competition than the others from planting to harvest, being a suitable variety in intercropping systems.
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Reis, Ronielli Cardoso, Luciana Alves de Oliveira, Jamille Mota Almeida, et al. "Culinary quality and sensory profile of cassava varieties harvested at different ages." Semina: Ciências Agrárias 42, no. 2 (2021): 657–78. http://dx.doi.org/10.5433/1679-0359.2021v42n2p657.
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Sweet cassava must be rapidly cooked and meet the sensory and technological requirements of consumers. The objectives of this study were to evaluate the culinary quality of sweet cassava varieties harvested at three ages and obtain the sensory profile of these varieties using the check-all-that-apply method (CATA). Roots of three cassava varieties released or recommended by Embrapa (BRS Aipim Brasil, BRS Dourada and Saracura) and the commercial variety Eucalipto, harvested at nine, 12 and 15 months of age, were evaluated for physical, chemical and sensory aspects. At nine months of age, the Saracura, BRS Aipim Brasil and BRS Dourada varieties did not differ in cooking time, averaging 41.62 min. The Eucalipto variety had similar cooking times at the three harvest ages, averaging 21.83 min. There was a difference between the four varieties at nine months, with Saracura exhibiting the lowest acceptance score (5.0) and differing from the Eucalipto variety, which showed an average score of 6.3. At 12 months of age, there was a significant increase in the acceptance of the Saracura and BRS Aipim Brasil varieties, which did not differ from Eucalipto and had an average score of 6.4. Consumers perceived differences between the sensory characteristics of the cassava varieties using CATA. The sensory terms “creamy”, “soft” and “sticky” can be associated with greater acceptance of cooked cassava roots, whereas terms such as “floury”, “slightly bitter”, “no taste”, “hard” and “fibrous” can be associated with less acceptance and are therefore undesirable from the consumer’s point of view. Principal component analysis showed that the age at which the roots were harvested had a great effect on the culinary quality of cassava, regardless of the evaluated variety. The commercial variety Eucalipto was well-accepted by the consumers irrespective of root age and can be harvested at any of the evaluated ages. For the Saracura, BRS Aipim Brasil and BRS Dourada varieties, harvesting is recommended at 12 or 15 months so that better quality roots are obtained.
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Wahyuni, Tinuk Sri, and Kartika Noerwijati. "Tuber yield, morphology, and chemical properties variability of sweet cassava germplasm." Ilmu Pertanian (Agricultural Science) 6, no. 2 (2021): 77. http://dx.doi.org/10.22146/ipas.57472.
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In Indonesia, the superior sweet cassava varieties are still limited due to the situation on which the majority of the superior varieties -bitter varieties- are used as industrial raw material until now. Therefore the availability of new high yielding of sweet cassava varieties is still needed. Assembling varieties requires the support of germplasm that has identified its superiority. The research objective was to evaluate tuber yield, morphology, and physico-chemical properties of cassava tuber from sweet cassava germplasm. A total of 75 accessions were characterized in Jambegede research station in February-November 2016, using Randomized Block Design. Variables observed included plant height, number of plants at harvest, harvest index, number and weight of tuber yield, and starch content. Physico-chemical analysis of tubers was carried out on 15 accessions with high tuber yields. Plant height at harvest was 393.2 cm in average. There were 10 accessions of sweet cassava with high fresh tuber yields ranging from 36.61 ton.ha-1 to 61.64 ton.ha-1, i.e MLG 10366, MLG 10365, MLG 10318, MLG 10197, MLG 10325, MLG 10341, MLG 10018, MLG 10279, MLG 10298, and MLG 10263. Physico-chemical analysis showed that the average of HCN content was 9.40 ppm, moisture content of 59.5 %, starch content of 28.8 % wb, and amylose content of 11.0 % wb. The bitter cassava with steamed tuber texture not cracked had relatively higher levels of HCN and water content, which was 82.88 ppm and 74.8 %, while the starch and amylose content was relatively lower (15.8 % wb and 5.5 % wb).
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Lawrence AUgbe, Jane-Francis Nyong, and Ugbong Emmanuel Akomaye. "A comparative analysis of the efficacies of six selected herbicides for effective control of spear grass (Imperata cylindrical Linn) in cassava production in Obudu, Northern Cross River State." GSC Biological and Pharmaceutical Sciences 15, no. 3 (2021): 272–80. http://dx.doi.org/10.30574/gscbps.2021.15.3.0135.
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A two-year, (2015 and 2016) field trial was conducted in Obudu Local Government Area of Cross River State to compare the efficacies of six (6) selected herbicides in controlling spear grass (Imperata cylindrical Linn) in cassava farm. The main treatments were the three cassava varieties: TMS 30572, TMS 50395 and NR 8082, while the sub treatments were six herbicides: Primextra, Igrancombi Gold, and Paracot as pre-emergence, Touchdown Forte Hi Tech, Galex and Fusilade Forte as post-emergence herbicides. The result showed that cassava establishment did not differ significantly among the cassava varieties, whereas herbicide type significantly (p<0.05) affected cassava establishment. High plant establishment was recorded in plots treated with Paracot, followed by plots treated with Igrancombi compared to high mortality rate recorded in plots treated with primextra as pre-emergence application. The tuber yield did not differ significantly among the cassava varieties. However, on the basis of average for both years, the trend was as follows: TMS 30572 (2.81 t/ha-1) > NR 8082 (2.75 t/ha-1)> TMS 50395 (2.56t/ha-1). On the contrary, tuber yield differed significantly (p<0.05) among herbicide types irrespective of the cassava variety, although no well-defined trend was established.
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Novitasari, Erliana, and Ratna Wylis Arief. "Analysis of Chemical Characteristic of Casava Flour from Klenteng and Casessart (UJ5) Varieties." Jurnal Penelitian Pertanian Terapan 18, no. 1 (2018): 52. http://dx.doi.org/10.25181/jppt.v18i1.1227.
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The technology of cassava flour modification has been researched and developed. Biological change by using BIMO-CF containing lactic acid bacteria is a practical technology that is easy to apply in the production of cassava flour. This research was conducted from May until August 2017 at Agrosains Park Natar with the aim to know the chemical characteristics of cassava flour from Klenteng and Casessart varieties. Observation parameters included analysis of moisture content, ash content, fat content, protein content, fiber content, total carbohydrate content, starch content, HCN content, and white degree at THP Polytechnic State Laboratory of Lampung. The results showed that the highest yield was produced by cassava flour from casessart variety with the addition of BIMO-CF were 23.11%. The water content of cassava flour produced ranged between 8.02-9.19%, by the quality requirements of SNI. The lowest ash content was cassava flour from casessart variety (1.19%) without the addition of starter. The addition of starter increased the protein content of cassava flour both of Klenteng variety (0.47%) and Casessart variety (1.11%), decreasing the fiber content for Klenteng variety (0.67%) and Casessart variety (0.90%). The amount of fat contained in cassava flour produced ranged from 0.69 to 0.87%. Carbohydrate content (Klenteng variety was 88.49%, and Casessart variety was 87,69%) and starch content (Klenteng variety was 85,98%, and Casessart variety was 84,83%), cassava flour with the addition of starter higher than cassava flour without the addition of starter. All of the cassava flour produced has HCN levels below the maximum limit (0.0216-0.0293%), while the degree of white (> 80%) has not met the quality requirements of SNI.
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LESTARI, TRI, and RION APRIYADI. "Genetic potential of cassava biodiversity in Bangka Island, Indonesia." Cell Biology and Development 1, no. 2 (2017): 41–45. http://dx.doi.org/10.13057/cellbioldev/v010201.
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Lestari T, Apriyadi R. 2017. Genetic potential of cassava biodiversity in Bangka Island, Indonesia. Cell Biol Dev 2: 41-45. Cassava is potential as a mixture ingredient of flour in the Bangka’s food industry. This study aimed to discover the biodiversity of local cassava in Bangka. This research was conducted in experimental field of the Faculty of Agriculture, University of Bangka Belitung, Indonesia from July 2015 to July 2016. The experimental design was randomized block design with 10 local cassavas of Bangka that consisted of upang, sekula, bayel, mentega, kuning, batin, pulut, sutera, rakit, and Selangor. Isozyme analysis performed using starch gel electrophoresis with horizontal models. Analysis for five Bangka local cassava varieties and one National cassava variety used RAPD group OP A and OP B. The results showed that the phenotypic performance was different on the type of plant, the morphology of leaves, stems, and tubers of local cassava of Bangka. Isozyme analysis showed polymorphic banding pattern, while the eight RAPD primers used did not produce polymorphic. This research showed Bangka local cassava morphologically different based on visual observation. Morphological character of Bangka local cassava leaf was divided into three shapes of lobe: ellipse (upang, sekula, bayel, mentega, batin, pulut, rakit, Selangor), linear (kuning) and lanceolate (sutera). This research data showed that the genetic diversity of local cassava in Bangka relatively high. Bangka local cassava has genetic potential as plant propagation material for plant breeding.
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Opabode, Jelili Titilola, Olufemi Victor Ajibola та Oluyemisi Amos Akinyemiju. "Shoot Induction from Axillary Bud of β-Carotene Enriched Manihot esculenta Crantz and Molecular Stability of Regenerants". Agricultura Tropica et Subtropica 48, № 3-4 (2015): 53–58. http://dx.doi.org/10.1515/ats-2015-0008.
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Abstract Inadequacy of planting materials is limiting the distribution of three high-β-carotene (pro-vitamin A) cassava varieties released in Nigeria to increase public vitamin A intake. However, studies have established the suitability of in vitro shoot culture for mass propagation of elite crop varieties for quick distribution to farmers. We investigated multiple shoot induction from axillary bud of three β-carotene enriched cassava varieties using BAP and assessed the genetic stability of the regenerated plants to establish mass propagation system. Multiple shoots were induced from BAP-enlarged axillary bud on basal medium supplemented with 10 mg/l BAP. Shootbuds were elongated on basal medium supplemented with 1.0 mg/l BAP and 10.0 IBA mg/l. Genetic stability of regenerated plants was assessed byeight RAPD markers. There were significant (P < 0.05) differences in survival of isolated axillary bud, shootbud formation, survival of shootbud, regenerated shoots, root formation and survived regenerated plants among cassava varieties. The order of shootbud formation among the cassava varieties was UMUCASS 37 > UMUCASS 36 >TMS 30555 > UMUCASS 38. The best (83.4%) shoot regeneration was recorded in TMS 30572 and lowest (47.8%) in UMUCASS 37, however, UMUCASS 36 recorded the best (98.5%) survival of regenerated shoot after hardening. Eight RAPD primers produced 56 bands, ranging from 200 to 3000 bp in size. RAPD analysis showed a uniform profile among regenerants and between mother plant and regenerants. The study concluded that multiple shoot formation could be induced in pro-vitamin A cassava varieties using BAP from axillary bud with no genetic infidelity of the regenerants.
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Minh Hong, Nguyen Thi, Nguyen Thi Hoai Thuong, Pham Bich Ngoc, and Chu Hoang Ha. "Studying on regeneration of several cassava varieties (Manihot esculenta Crantz) via friable embryogenic callus." Vietnam Journal of Biotechnology 16, no. 1 (2018): 119–26. http://dx.doi.org/10.15625/1811-4989/16/1/13456.
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Cassava (Manihotesculenta Crantz) is considered as one of the most important food crops which has high economic value in many areas. It is very neccessay to perfect the cassava regeneration protocol for genetic transformation purpose. In this study, cassava regeneration via friable embryogenic callus (FEC) from tip bud, young stem, pieces of leaf had been optimized in five cassava varieties which were planted in Vietnam including KM 140 (S1), NgheAn white cassava (S2), Lang Son red cassava (S3), HoaBinh high – yield cassava (S4) and Huay Bong (S5). The results indicated that on MS medium supplemented with 10 mg/l Picloram, the proportion of callus formation was very high, reached from 90 to 100%. In the case of using tip buds, after three weeks, calli were transferred to MS medium adding 5 mg/l picloram and 0,2 mg/l IBA. The proportion of FEC formation reached 41,1 – 80,4 % after 8 weeks of cultivation in all studied Cassava varieties. The samples were transferred to MS medium adding 0,3 mg/l BAP to elongate shoots in 4 weeks. The highest regeneration rate belonged to S1, and was 61,67%. Three weeks after shoot transferring on MS medium, the complete seedlings were grown in substrate which was composed by TN01 and husk hun with ratio of 6:4 in greenhouse. As a result, the rate of survival plants reached to 95%. The process of regeneration of cassava through embryonic calli could be applied for the improvement of desired cassava varieties by method of genetic engineering.
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P.O, Aiyelari, Odede A.N, and Agele S.O. "Growth, Yield and Varietal Responses of Cassava to time of Planting into Plantain Stands in a Plantain/Cassava Intercrop in Akure, South-West Nigeria." Journal of Agronomy Research 2, no. 2 (2019): 1–16. http://dx.doi.org/10.14302/issn.2639-3166.jar-19-2967.
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A field experiment was carried out at the Teaching and Research Farms of The Federal University of Technology Akure to evaluate the responses of cassava varieties to time of planting in plantain-based intercropping system in the rainforest zone of Nigeria. The objectives were to identify the more compatible cassava variety for intercrop with plantain examine e the appropriate time to introduce cassava varieties into plantain/cassava intercrop and to identify the more compatible cassava variety for intercrop with plantain. The experiment involved the use of two varieties of cassava (TME 419 non branching and TMS 98/0581 moderately branched) planted at spacing of 1 x 1 m into the alleys of false horn plantain variety space at 3 x 2 m. The treatments were sole plantain, sole cassava varieties (TME 419 poorly branched variety and TMS 0581 branching variety), plantain + he respective cassava varieties (TME 419 and TMS 98/0581) at the same time, and plantain + the respective cassava varieties (TME 419 and TMS 98/0581) at 4 weeks after planting>the treatment plot size was 9 m x 6 m. The plantains and the two cassava varieties were planted sole as the control treatments. The introduction of cassava into plantain as intercrop was carried out at different times which were; at the same time with plantain, and at four (4) weeks after planting plantain. Data on growth parameters such as; plant height, pseudo-stem girth, number of leaves were taken for plantains, while plant height, stem girth, number of leaves, number of branches, height at branching were taken for cassava at 4, 8, 12, 16, 20 and 24 weeks after planting (WAP). Yield parameters such as; bunch weight, number of fingers, number of hands, length of fingers, girth of fingers, weight of hands, weight of fingers were taken for plantains while number of tubers, weight of tubers, girth of tubers, length of tubers, fresh root yield, shoot biomass, were taken for cassava at harvest. The data collected were subjected to statistical analysis. The results showed a higher growth and yield performance for TME419 (49.2 t/ha) and TMS98/0581 (45.7 t/ha) planted sole, and TME 419 (39.5 t/ha) intercropped at planting compared to TMS 98/0581 (24.4 t/ha) intercropped at planting, TME 419 (21.7 t/ha) and TMS 98/0581 (15.7 t/ha) intercropped at 4 week after planting (WAP), respectively. But there was no significant difference (P<0.05) recorded for the growth of plantain, whereas the yield of sole plantain was higher and differed significantly (P<0.05) from the yields of intercropped plantain. All the treatment combinations had land equivalent ratio (LER) and area time equivalent ratio (ATER) greater than 1. Plantain + TME 419 intercropped at the same time recording the highest LER and ATER (1.48 and 1.5) while plantain + TMS 98/0581 had the least 1.11 and 1.14 respectively. The cost benefit analysis for the treatment combinations showed that TME 419 planted sole had the highest return of ₦3.567 per ₦1 invested, TME 419 intercropped at the same time gave a return of ₦3.416 per ₦1 invested, which was greater than other intercropped treatments. Intercropping cassava with plantain at the same time, as well as the use of TME 419 variety gave the best performance in terms of growth, yield, land equivalent ratio, area time equivalent ratio and returns on investment. This combination are recommended for plantain-based intercropping system involving cassava in the study area.
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Teixeira, P. R. G., A. E. S. Viana, A. D. Cardoso, G. L. P. Moreira, S. N. Matsumoto, and P. A. S. Ramos. "Physical-chemical characteristics of sweet cassava varieties." Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences 12, no. 2 (2017): 158–65. http://dx.doi.org/10.5039/agraria.v12i2a5433.
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Owusu, Victor, and Emmanuel Donkor. "Adoption of Improved Cassava Varieties in Ghana." Agricultural Journal 7, no. 2 (2012): 146–51. http://dx.doi.org/10.3923/aj.2012.146.151.
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Ngeve, J. M. "YIELD STABILITY PARAMETERS FOR COMPARING CASSAVA VARIETIES." Acta Horticulturae, no. 380 (November 1994): 138–45. http://dx.doi.org/10.17660/actahortic.1994.380.21.
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Pratiwi, Herdina, and Dan Rina Artari. "Respon Morfo-Fisiologi Genotipe Kedelai terhadap Naungan Jagung dan Ubikayu." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 46, no. 1 (2018): 48. http://dx.doi.org/10.24831/jai.v46i1.15441.
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<p>Study on soybeans morpho-physiological responses in artificial or natural shade are beneficial to determine the effects of shade on morpho-physiology and yield of soybean. This research was aimed to study the morpho-physiological responses of soybean varieties under shading of maize and cassava compared to arficial shading. The research was conducted in Kendalpayak Research Station, ILETRI, from February to May 2016 used split plot design with three replications. The main plot was three shade sources: N1:black paranet 50%, N2: maize shade, and N3: cassava shade, while the sub plot was five soybean varieties: Dena 1, Dena 2, Argopuro, Panderman, and Grobogan. Soybean varieties showed morpho-physiology differences depending on the shade source. Soybean grown under shading of cassava had plant height, leaf area ratio, and leaf area lower than under shading of paranet and maize. Cassava shade also caused soybean had higher growth rate, net assimilation rate, and yield than those under paranet and maize shade. Shade-tolerant varieties (Dena 1 and Dena 2) had high yield on all kind of shade. Less tolerant varieties (Panderman and Grobogan) had higher yield under cassava shade and lower yield under paranet and maize shade. Maize crop had similar shade effects with 50% paranet shade.<br /><br />Keywords: Glycine max (L) Merr., intercropping, Manihot esculenta Crantz, paranet, Zea mays L.<br /><br /></p>
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Adriko, J. "Response of Local Cassava Varieties in Uganda to Cassava Mosaic Virus Disease." American Journal of Experimental Agriculture 2, no. 1 (2012): 111–32. http://dx.doi.org/10.9734/ajea/2012/736.
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Toae, Sriroth, Rojanaridpiched, et al. "Outstanding Characteristics of Thai Non-GM Bred Waxy Cassava Starches Compared with Normal Cassava Starch, Waxy Cereal Starches and Stabilized Cassava Starches." Plants 8, no. 11 (2019): 447. http://dx.doi.org/10.3390/plants8110447.
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Waxy cassava roots of nine varieties successfully developed in Thailand by a non-genetic modification (non-GM), conventional breeding method were used for extracting starches and their starch physico-chemical properties were evaluated and compared with normal cassava starches, commercial waxy starches (i.e., waxy maize starch and waxy rice starch) and commercial stabilized starches (i.e., acetylated starch and hydroxypropylated starch). All waxy cassava varieties provided starches without amylose while normal cassava starches contained 18%–20% amylose contents. As determined by a Rapid Visco Analyzer (RVA) at 5% (dry basis), waxy cassava starches had the highest peak viscosity and the lowest setback viscosity. Cooked paste of waxy cassava starches had the greatest clarity and stability among all starches during storage at 4 ℃ for 7 days as evidenced by its high light transmittance (%T) at 650 nm. No syneresis was detected in waxy cassava starch gels after subjecting to four freeze-thaw cycles (4 weeks) indicating high potential use of waxy cassava starches, free from chemicals, to replace stabilized starches as thickening and texturing agents in food products.
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Lestari, Tri, Rion Apriyadi, and Fajar Setiawan. "Morphological Performance of Bangka Local Cassava on Acid Soils with The Addition of Mycorrhiza." AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian 2, no. 1 (2018): 15–21. http://dx.doi.org/10.33019/agrosainstek.v2i1.20.
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The local cassava plant of Bangka has not been utilized optimally because its production is still low compared to national varieties. There are several ways to create good soil conditions to support plant growth in acid soils, such as the addition of mycorrhiza. The objective of the study was to increase the growth and production of Bangka local cassava in acid soils. The experiment had been conducted on acid soils with pH 4.4 (very acidic) and P-Bray 1 5.8 ppm (very low) in Balunijuk Village, Bangka Regency, from September 2016 - May 2017. This research used the experiment method with factorial randomized block design (FRBD) with two factors. The first factor was Bangka local cassava namely Sutera, Mentega, Batin, 3 Bulan and Malang variety (as the comparison) and second factor was mycorrhiza. The results showed Sutera accession had the highest plant height and production in acid soils. The addition of mycorrhiza as much as 50 g / plant can increase the growth and production of Bangka local cassava. The Bangka local cassava showed better growth quality but still have lower production compared with national varieties. Conservation of local cassava plants Bangka in acid soils can be optimized its growth by using local clones Bangka, but the production of national varieties is higher compared local cassava of Bangka
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Misganaw, Chanie Derso, and Walelign Demisie Bayou. "Tuber Yield and Yield Component Performance of Cassava (Manihot esculenta) Varieties in Fafen District, Ethiopia." International Journal of Agronomy 2020 (April 13, 2020): 1–6. http://dx.doi.org/10.1155/2020/5836452.
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Since there is a variety of performance in cassava varieties for different agroecologies and there was no cassava production before in Ethiopian Somali regional state, Fafen district in particular. Investigation of the performance of higher tuber yielded cassava variety is the main concern for this study. Thus, the objective of this study was to evaluate tuber yield performance of cassava varieties. To do so, four varieties (kello, Qulle, Hawassa-4, and Chichu) were collected from Hawassa Agricultural Research Center and planted in Fafen district where there is arid climatic condition. Thirty-centimeter-long stakes were planted with 1 m × 1 m intra- and inter-row spacing with Randomized Complete Block Design (RCBD). There were four rows, five plants per row and twenty plants per plot. Phenological, growth, and agronomic parameters were analyzed using SAS software; mean differences were compared using LSD at p≤0.05. The result revealed that days to 50% establishment of the stem cuttings of variety “Qulle” were performed within 15.6 days. Among all varieties, Chichu and Hawassa-4 had the highest number of plant stand count, 88.3 and 86.7%, respectively. The highest number of mean multiplication ratio, secondary branches per plant, and mean plant height were obtained with variety “Qulle.” With regards to tuber yield and its components, there was significant difference among understudied cassava varieties. The highest tuber yield (23.93 t/ha) was registered in variety “Hawassa-4” followed by Kello (19.90 t/ha) and Qulle (18.73 t/ha). It implies that variety “Hawassa-4” performed best in the test area and hence recommended in test area.
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Dankwa, K. O., and B. B. Peprah. "Industrialization of cassava sector in Ghana: progress and the role of developing high starch cassava varieties." Ghana Journal of Agricultural Science 54, no. 2 (2019): 79–85. http://dx.doi.org/10.4314/gjas.v54i2.8.
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In Ghana, cassava is a marginalized crop in food policies due to low research attention given it. However, high starch in cassava root is an important characteristic that makes the crop a potential industrial cash crop. In light of this, the Government of Ghana in 2001 introduced the Presidential Special Initiative (PSI) on Cassava, which aimed at industrializing the cassava sector for job creation and livelihood improvement through starch extraction. One of the import industrial products from cassava starch is ethanol. Ethanol is reported as the largest opportunity for cassava industrialization in Ghana followed by food-grade starch. However, the local ethanol consuming industry, Kasapreko, operates by importing over 25 million litres of ethanol every year due to inadequate supply of ethanol from local starch factories. This situation exists because of lack of cassava varieties that can yield more starch (75% or more) per total dry weight to feed the starch factories for sustainable production. Therefore, this review explores the relevance of developing high starch yielding cassava to the industrialization of the cassava sector in Ghana and lessons to learn from the success story of Thailand, the country with the world’s most industrialized cassava sector.
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Manano, John, Patrick Ogwok, and George William Byarugaba-Bazirake. "Chemical Composition of Major Cassava Varieties in Uganda, Targeted for Industrialisation." Journal of Food Research 7, no. 1 (2017): 1. http://dx.doi.org/10.5539/jfr.v7n1p1.
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Uganda is one of the major cassava producing countries in the world. Currently, utilization of cassava is limited to semi-processed products through the informal sector. Cassava has technological potential as a raw material for agro-industrial products, such as flours for baked products, animal feeds and starch. The aim of this study was to investigate the chemical composition of five major cassava varieties grown in Nebbi distict (Uganda), to assess their potential as industrial raw materials. Analysis of the chemical composition of local (Nyamatia and Nyarukeca) and improved (NASE 3, NASE 14, and NASE 19) cassava varieties was carried out using standard methods. Results showed significant (p < 0.05) differences between the varieties indicating high levels of starch, calcium, magnesium, cyanonenic glucosides and phytates. The cassava varieties contain low levels of protein, lipids and minerals with respect to recommended daily intake of these nutrients. Moisture contents ranged from 5.43 for Nyamatia to 10.87 for NASE 19; ash from 1.05 for Nyamatia to 2.39 for NASE 14; crude fiber from 1.06 for Nyamatia to 1.18 for NASE 19; crude protein from 0.74 for Nyarukeca to 1.51 for NASE 14; crude lipid from 0.39 for Nyamatia to 0.63 for NASE 19; and starch contents from 66.72 for NASE 19 to 84.42 for NASE 3. The mineral contents (mg/kg): calcium ranged from 13.15 for Nyamatia to 16.56 for NASE 3; iron ranged from 0.002 for Nyarukeca to 0.01 for NASE 19; zinc ranged from 0.56 for Nyamatia to 0.87 for NASE 3; magnesium ranged from 3.58 for NASE 19 to 3.88 for Nyarukeca; and copper ranged from 0.002 for Nyamatia to 0.14 for NASE 3. The contents of anti-nutrients (mg/kg): cyanogenic glucosides ranged from 30 in NASE 3 and NASE 19 to 800 in Nyamatia; phytates ranged from 661.33 in Nyarukeca to 984.64 in NASE 3; oxalates ranged from 90.6 in Nyarukeca to 227.8 in NASE 3; and tannin ranged from 0.18 in Nyarukeca to 0.33 in NASE 3. Based on the chemical composition results, all the cassava varieties studied contain higher levels of cyanogenic glucosides than recommended by Ugandan and East African Standards, making them unsafe for direct utilization as food and food raw materials for industries at levels beyond 30% in food formulations. The high starch levels in all the cassava varieties make them valuable raw materials for starch and starch-related industries.
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OKECHUKWU, R. U., A. G. O. DIXON, M. O. AKORODA, M. MWANGI, and R. BANDYOPADHYAY. "ROOT ROT RESISTANCE IN NEW CASSAVA VARIETIES INTRODUCED TO FARMERS IN NIGERIA." Experimental Agriculture 45, no. 1 (2009): 15–24. http://dx.doi.org/10.1017/s0014479708006777.
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SUMMARYIn 2004 and 2005 through field trials in over 2500 locations in several agroecological zones, 40 new cassava varieties were introduced in Nigeria. The trials were managed by scientists, extension workers and farmers. The aim in introducing these new varieties was to pre-emptively manage cassava mosaic disease, to avert an imminent threat from the Ugandan strain of the pathogen and prevent damage to the Nigerian cassava economy. From these trials, 10 new varieties were selected and officially released for high root yield, high dry matter content and acceptability for food, industry and livestock. Cassava root rot is a major source of yield loss in Nigeria, especially where farmers practice late harvest because they wait for a good price from the market before harvest and sales. This paper investigated how the 40 varieties together with three old improved varieties currently in farmers' fields during the formal trials responded to root rot disease. No absolutely resistant variety was found, indicating that early harvest (9–11 months after planting) is still the best way to reduce losses from root rot. Root rot is also significantly (p ≤ 0.05) influenced by genotype and environment interaction. Most root rot was recorded in the humid forest and the least was in the Sudan savanna agroecological zone. Using a rank-sum method, the 43 varieties were separated into highly resistant, resistant, moderately resistant, moderately susceptible, susceptible and highly susceptible classes.
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Amarullah, Amarullah, Didik Indradewa, Prapto Yudono, and Bambang Hendro Sunarminto. "Correlation of Growth Parameters with Yield of Two Cassava Varieties." Ilmu Pertanian (Agricultural Science) 1, no. 3 (2017): 100. http://dx.doi.org/10.22146/ipas.10706.
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The correlation of major growth parameters with the yield of cassava in different growth phases was investigated in 2013 and 2014. This experiment was conducted to assess the effect of two cassava varieties and the different growth phases to the yield and yield components. In experiment, the varieties as treatment were arranged in a randomized complete block design (RCBD) with three replications. Two varieties consisted of superior Adira-4 and local varieties Singgah were used. The growth parameters (plant height, stem diameter, leaf number) and yield components (number of tuber, weight per tuber and tuber yield) in early growth phase, maximum vegetative growth phase and charging tuber phase, were observed. Based on the correlation results, the growth parameters and the yield highly affected to the final outcome of cassava tubers at different growth phases. In the early growth phase, occurs high demand to assimilate with the expense of storage root. However, from the maximum vegetative phase, growth parameters began to show a significant positive contribution to the tuber weight. Weight of fresh tuber in both varieties increased at the charging of tubers phase and thereafter (enlarged bulb). The early growth phase and maximum vegetative phase might not generate a significant contribution to the final yield of cassava tuber. Making those two periods were not suitable time for optimum harvesting result, and it still depended on the variety and its allocation.
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Fitriana, Maria Dhu’a, Wan Abbas Zakaria, and Eka Kasymir. "ANALISIS EFISIENSI PRODUKSI USAHATANI UBI KAYU DI KECAMATAN NATAR KABUPATEN LAMPUNG SELATAN." Jurnal Ilmu-Ilmu Agribisnis 7, no. 1 (2019): 22. http://dx.doi.org/10.23960/jiia.v7i1.22-27.
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This study aims to analyze the profitability, factors that affect production and production efficiency of cassava farming. The research is conducted by survey method in Natar District of South Lampung Regency from June to August 2017. The 56 research samples are obtained by simple random sampling method. Primary data is obtained from direct questionnaires interview with cassava farmers and secondary data obtained from several related institutions. Data is analyzed qualitatively and quantitatively by income analysis and production function of Cobb Douglas. The results showed that cassava farming in Natar District of South Lampung Regency was profitable for farmers of Cassesart variety and not profitable for other varieties. Factors affecting cassava farming for respondents of Cassesart variety were land area, urea fertilizer and labor, for respondents of other varieties were land area and labor. Production process was not efficient and in increasing return to scale phase.Key words: cassava, efficiency, production, profit
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Eyinla, Toluwalope Emmanuel, Busie Maziya-Dixon, Oladeji Emmanuel Alamu, and Rasaki Ajani Sanusi. "Retention of Pro-Vitamin A Content in Products from New Biofortified Cassava Varieties." Foods 8, no. 5 (2019): 177. http://dx.doi.org/10.3390/foods8050177.
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Plant breeding efforts in sub-Saharan Africa (SSA) have produced biofortified cassava with high carotenoid content to address vitamin A deficiencies (VAD). Since carotenoids in foods are easily depleted during processing, the retention of β-carotene in some newly released cassava varieties is under query. From four of these new varieties, two commonly consumed products (gari and its dough) were processed according to standard methods. Retention of β-carotene was then probed after applying fermentation periods of a day and three days. The possible contribution of the products to Vitamin A intake in children, adolescents, and women was also assessed. The concentration of β-carotene in fresh Cassava roots ranged from 5.32 to 7.81 µg/g. The percentage retention ranged from 14.4 to 29.3% and 10 to 21.7% in gari fermented for one and three days respectively. The impact of varietal difference and length of fermentation was significant on retention in the intermediate and final products (p < 0.001). When compared with dietary intake data, cooking biofortified gari into its dough reduced Vitamin A intake in most varieties. We conclude that processing Cassava into gari (especially its dough) could hinder the retention of β-carotene however some varieties have retention advantage over others irrespective of the initial concentration in their fresh roots.
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Venturini, Marcela Tonini, Taylane da Silva Araújo, Emanuel Felipe Medeiros Abreu, et al. "Crop losses in Brazilian cassava varieties induced by the Cassava common mosaic virus." Scientia Agricola 73, no. 6 (2016): 520–24. http://dx.doi.org/10.1590/0103-9016-2015-0374.
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Samad, Sofyan, Hamidin Rasulu, Hasbullah ., and Syamsuddin Hasan. "Chemical Properties of High-Quality Cassava Flour (HQCF) from Several Varieties of Cassava." Pakistan Journal of Nutrition 17, no. 12 (2018): 615–21. http://dx.doi.org/10.3923/pjn.2018.615.621.
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Mushumbusi, Cornelius B., Robert A. Max, Gaymary G. Bakari, James R. Mushi, and Sakurani T. Balthazary. "Cyanide in Cassava Varieties and People’s Perception on Cyanide Poisoning in Selected Regions of Tanzania." Journal of Agricultural Studies 8, no. 1 (2020): 180. http://dx.doi.org/10.5296/jas.v8i1.15511.
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Cassava, an important food crop in the tropical regions of the world, is known to carry varying levels of cyanogenic glucosides that are potential poison to humans. In Tanzania, cases of cyanide poisoning have been reported in many cassava producing areas. This study was launched to quantify cyanide in fresh tubers of so called “sweet” cassava varieties and to gauge peoples’ perception on cyanide poisoning in Kagera and Morogoro regions. The study employed a questionnaire survey and a cross-sectional research design to identify different cassava varieties and their cyanide content using alkaline titration method. Findings showed that cyanide content in all of the analyzed tubers were above the internationally accepted levels in human consumables. Some sweet varieties were found to be wrongly classified as sweet because their cyanide content was above acceptable limits. For the same variety tubers sampled from a lowland area had significantly higher (P < 0.01) cyanide content than those from a highland point. It was also found that the upper (slippery) parenchymal tissue had more cyanide content (P < 0.05) than the inner tissue. Nearly 80% of the studied population was unaware of cyanide poisoning, its health effects and how to reduce cyanide content prior to consumption. It is concluded that consumption of raw cassava tubers can lead to undesirable health effects despite of some of them being categorized as sweet. The public should be sensitized on the issues of cyanide in cassava and should avoid consuming raw cassava tubers as preventive measures against cyanide poisoning.
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GONZALEZ, CAROLINA, SALOMON PEREZ, CARLOS ESTEVAO CARDOSO, ROBERT ANDRADE, and NANCY JOHNSON. "ANALYSIS OF DIFFUSION STRATEGIES IN NORTHEAST BRAZIL FOR NEW CASSAVA VARIETIES WITH IMPROVED NUTRITIONAL QUALITY." Experimental Agriculture 47, no. 3 (2011): 539–52. http://dx.doi.org/10.1017/s0014479711000378.
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SUMMARYBiofortified staple crops, amongst them cassava, are being developed to reduce problems of micronutrient malnutrition. In 2006 new cassava varieties with increased levels of provitamin A were released. For the purpose of enhancing adoption of the new cassava varieties, two strategies were used: (1) a participatory research approach and (2) public awareness raising activities. This paper attempts to evaluate the results of these two diffusion strategies. Within the first strategy, the factors found to enhance adoption rates were: awareness of the new varieties' advantages, public entities as the main information sources and involvement in participatory research. Within the second strategy, trends were found between adoption rates and producer characteristics including: ownership of land, middle-level income, advanced education level and use of information media, namely the Internet. In both strategies, a lack of seeds was one of the main factors limiting the adoption process.
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陈, 鸿璇. "Introduction and Comprehensive Evaluation of Cassava Edible Varieties." Hans Journal of Agricultural Sciences 09, no. 08 (2019): 650–60. http://dx.doi.org/10.12677/hjas.2019.98093.
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John Olusola, Akingbala, Olunlade Babatunde Adebiyi, and Khan Riyaad. "Evaluation of new cassava varieties for adhesive properties." Starch - Stärke 67, no. 7-8 (2015): 561–66. http://dx.doi.org/10.1002/star.201400239.
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