Journal articles: 'Cassava Harvesting'

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Junsiri, Chaiyan, and Aekkaparp Panpoom. "The Study of Cassava Root Conveying Equipment Attached to a Truck." Advanced Materials Research 931-932 (May 2014): 1555–60. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.1555.

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The objective of this study was for development of cassava transporting equipment installed on a truck. The study process was divided into 2 steps: 1) The study of cassava harvesting and transporting to the truck pattern by farmers practice today and 2) preliminary study of transporting cassava by using additional conveying device in order to reduce time and labor for the overall harvest system. Results in step 1 indicated that the pattern of cassava harvesting consisted of four main steps : tillage, heap compiling, stem cutting and cassava transporting to the truck. The most time consuming step was the transporting of cassava to the truck. The cassavas transporting to the plant normally had to be completed within one day. The consequently, cassava transporting was considered to be the bottle-neck problem of cassava harvest system. Result from the study in step 2, which was preliminary study of using a conveying device attached to the truck to reduce time and labor indicated that a working capacity of 1.44 rai/hour was obtained, being 3.13 time higher than the usual manual labor method.

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Puspitorini, Palupi, Dyah Pitaloka, and Tri Kurniastuti. "UJI DAYA HASIL UBIKAYU (Manihot esculenta Crantz) VARIETAS UJ5 PADA BERBAGAI UMUR PANEN." VIABEL: Jurnal Ilmiah Ilmu-Ilmu Pertanian 10, no. 1 (June 1, 2016): 63–70. http://dx.doi.org/10.35457/viabel.v10i1.114.

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This study aims to find out the results of cassava tuber crop UJ5 variety at different harvest ages. Research direction is that cassava varieties have been planted throughout Indonesia as the best producer of cassava varieties. High levels of starch and high HCN content makes this variety was selected by the factory - tapioca factory in Indonesia. Research design used randomized block design with 7 treatments of harvesting (UP) were repeated 3 times. UP6 (harvesting 6 MAP), UP7 (harvesting 7 MAP), UP8 (harvesting 8 MAP), UP9 (harvesting 9 MAP), UP10 (harvesting 10 MAP), UP11 (harvesting 11 MAP), UP12 ( harvesting 12 MAP). The research variables are the fresh weight of tuber, tuber starch content (%), the weight of biomass, harvest index, number of tubers per plant. The results showed that the best harvesting time is UP9 the results did not differ with UP10, UP11 and UP12

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Puspitorini, Palupi, Dyah Pitaloka, and Tri Kurniastuti. "UJI DAYA HASIL UBIKAYU (Manihot esculenta Crantz) VARIETAS UJ5 PADA BERBAGAI UMUR PANEN." VIABEL: Jurnal Ilmiah Ilmu-Ilmu Pertanian 10, no. 1 (June 1, 2016): 63–70. http://dx.doi.org/10.30957/viabel.v10i1.114.

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This study aims to find out the results of cassava tuber crop UJ5 variety at different harvest ages. Research direction is that cassava varieties have been planted throughout Indonesia as the best producer of cassava varieties. High levels of starch and high HCN content makes this variety was selected by the factory - tapioca factory in Indonesia. Research design used randomized block design with 7 treatments of harvesting (UP) were repeated 3 times. UP6 (harvesting 6 MAP), UP7 (harvesting 7 MAP), UP8 (harvesting 8 MAP), UP9 (harvesting 9 MAP), UP10 (harvesting 10 MAP), UP11 (harvesting 11 MAP), UP12 ( harvesting 12 MAP). The research variables are the fresh weight of tuber, tuber starch content (%), the weight of biomass, harvest index, number of tubers per plant. The results showed that the best harvesting time is UP9 the results did not differ with UP10, UP11 and UP12

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Thangdee, Danuwat, and Seree Wongpichet. "Some Physical Properties of Cassava Concerned in Machine Design." Advanced Materials Research 482-484 (February 2012): 2613–17. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.2613.

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The Physical Properties of Cassava was studied as the data for design the cassava harvesting machine. The Kasetsart-50 variety was random checked from the 14 plot and the results were showed that: the normally cultural practice of farmer were grew cassava on the ridge form with about 680 and 960 millimeters of within row and between row respectively, and on the harvesting period the ridge was about 150 millimeters height, while the length, width, penetration of cassava bunches regard to row at 90 percentile were 501, 566, and 210 millimeters respectively. The average of cassava bunches weight was 4 kilograms. The bulk density of cassava bunches was 197 kilograms/cubic meter and the angle of friction on iron surface was 23 degrees.

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Sukweenadhi, Johan. "Pengolahan Produk Pangan Berbasis Ketela dan Minuman Sehat Fermentasi Sebagai Langkah Meningkatkan Nilai Produk Lokal di Desa Seloliman, Kecamatan Trawas, Kabupaten Mojokerto." JPM17: Jurnal Pengabdian Masyarakat 4, no. 2 (October 8, 2019): 74–81. http://dx.doi.org/10.30996/jpm17.v4i2.1976.

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AbstractÂ Cassava and sweet potato are the main commodity plants in Seloliman. So far, the farmer there directly sell it after harvesting process. However, in case the sales are not much and many quantities of cassava or sweet potato remains, it become tainted which can reduce its quality or ever become waste. Less of knowledge about post harvesting process of that plant makes people less concerned about the potential of its processed product. With the knowledge sharing and workshop of cassava and sweet potato post harvesting process, the society will have insight and knowledge how to process their excess cassava become more valuable food products. Other utilization of healthy fermented drink from microbe symbiont like kefir and kombucha, which use the local flowers or fruits, can be done to boost the local beverage products in Seloliman. Both ways can be one of the steps to empower the Seloliman society to brand their unique products in the future.Keywords: cassava, post-harvest, healthy fermented drink, kefir, kombucha

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Agbetoye, L. A. S., J. Dyson, and J. Kilgour. "Prediction of the Lifting Forces for Cassava Harvesting." Journal of Agricultural Engineering Research 75, no. 1 (January 2000): 39–48. http://dx.doi.org/10.1006/jaer.1999.0483.

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Miranda, Lilian, Wilma Spinosa, Tainá Destro, Helio Junior, and Vagner Nascimento. "Influence of harvest time and agricultural year in yield components of table cassava cultivars." Agronomy Science and Biotechnology 5, no. 2 (December 15, 2019): 77. http://dx.doi.org/10.33158/asb.2019v5i2p77.

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Agricultural year and harvesting season may interfere with yield and post-harvest performance of table cassava cultivars, with consequences for their commercialization and net profit. The objective of this work was to quantify the effects of harvesting season and agricultural year on yield performance of table cassava cultivars and their correlations. Planting was carried out in September in two consecutive years near Londrina city, PR, in a Clay-textured Oxisols red eutrophric. The experiment followed a randomized complete block design (RCBD) with four replications, consisting of seven harvesting times (8, 10, 12, 14, 16, 18 and 20 months after planting) for each agricultural year. The table cassava cultivars used were: Catarina Amarela, Catarina Branca, Mato Grosso, Pretona, IAPAR 19-Pioneira and IAC 576-70. The following agronomic characteristics were evaluated: number of roots per plant, length, diameter and yield of tuberous roots, as well as the following post-harvest characteristics: net yield and peeling time per kg of each cassava genotype. The cultivars, harvesting time and agricultural year affected the yield and post-harvest characteristics. ‘IAPAR 19-Pioneira’ presented a larger number of roots per plant (9.9) and peeling time (224.8 seconds.kg-1), but lower yield % (66.2%) and diameter of tuberous roots (4.0 cm), regardless of harvest time and year of planting. 'Catarina Amarela', 'Catarina Branca', 'IAC 576-70' and 'Pretona' provided higher yields, diameters and reduced peeling times. The root mean diameter is one of the characteristics that can be used as a selection criterion in a table cassava genetic breeding program: the larger the root mean diameter the larger are tuber root yield and percentage of weight of the tradable part of the roots, and the lower is the time of peeling.

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DANILOLA, Samuel Temitope, Raphael BABATUNDE, and Jubril ANIMASHAUN. "Extent and financial cost of cassava postharvest loss along the cassava value chain in Kwara State, Nigeria." Acta agriculturae Slovenica 114, no. 2 (December 13, 2019): 149. http://dx.doi.org/10.14720/aas.2019.114.2.1.

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Cassava has been identified as Africa’s second most important staple food after maize, in terms of calories consumed, with Nigeria as the World leading producer. This study estimated postharvest loss of cassava along the cassava value chain in Kwara State. It estimated the size of postharvest loss of cassava; analysed the factors responsible and the financial implications of loss; and identified the strategies employed in the mitigation of loss in the study area. A three-stage random sampling technique was used to select 117 cassava farmers whom were administered structured questionnaire to elicit data analysed by the study. Descriptive statistics, Shannon’s diversity index and Tobit regression model were the analytical techniques utilised. The results show that 68 % of the loss occurred at the harvesting. The loss was estimated to be about 3.8 t ha-1. The financial implication was valued at $ 300 ha-1. Analysis of the factors responsible for cassava postharvest loss showed that the quantity expected at harvesting, household size and age of the farmer were significant factors affecting cassava postharvest loss. The result also revealed that farmers mitigate these losses by processing the roots and reburying unused roots into the soil. Steps needed to reduce loss have to take these factors into consideration to improve the economic status of cassava farmers-processors.

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Nurdjanah, Siti, Susilawati Susilawati, Udin Hasanudin, and Ayu Anitasari. "KARAKTERISTIK MORFOLOGI DAN KIMIAWI BEBERAPA VARIETAS UBI KAYU MANIS ASAL KECAMATAN PALAS, KABUPATEN LAMPUNG SELATAN BERDASARKAN UMUR PANEN YANG BERBEDA." JURNAL AGROTEKNOLOGI 14, no. 02 (December 21, 2020): 126. http://dx.doi.org/10.19184/j-agt.v14i02.17383.

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Most of cassava grown in Palas, South Lampung District is sweet type cassava (Manihot esculenta Crantz) utilized as raw materials for cassava-based snack production. However, their characteristic had never been reported. The aims of the research were to determine the effect of varieties, harvesting age, and interaction between varieties and the harvesting age on morphology and chemical characteristics of sweet type cassava planted in Palas District, South Lampung. The experiment was factorial and arranged in a Complete Randomized Block Design (CRBD) with two factors and four replications. The first factor was cassava variety, i.e., manalagi (V1), mentega (V2), and krembi (V3). The second factor was the harvest age (U) i.e., 7-8 months (U1) and 8-9 months (U2). Morphology data were reported descriptively, while data for other characteristics were tested for homogeneity and additivity using Barlett and Tuckey test, then subjected to ANOVA, and further tested using Duncan test at the level of 5%. The results showed that the variety and harvest age significantly affected of water content, starch yield, starch content, amylose, and amylopectin. There was a significant interaction between varieties and age of harvest on moisture content, starch yield, and starch content, but there was no significant interaction effect on amylose and amylopectin. The highest value of moisture content was found in manalagi aged at 7-8 months (67.28% wb), the highest value of starch yield was found in manalagi age at 8-9 months of (16.34%), the highest value of starch content was found in mentega aged at 8-9 of months (17.52 % wb), the highest value of amylose was found in mentega aged at 8-9 of month (10.35% db), the highest value of amylopectin was found in krembi aged at 7-8 of month (92.78% db). Overall, krembi, manalagi, and mentega can be categorized as low-amylose cassava which has potential to be developed as raw material for crispy cassava-based snack. Keywords: harvesting age, krembi, low-amylose cassava, manalagi, mentega

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Ojiako, Ifeanyi A., G. Tarawali, RU Okechukwu, and JN Chianu. "Household characteristics and market participation competence of smallholder farmers supplying cassava to starch processors in Nigeria." International Journal of Agricultural Research, Innovation and Technology 6, no. 2 (February 27, 2017): 42–56. http://dx.doi.org/10.3329/ijarit.v6i2.31704.

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The household head characteristics of smallholder cassava farmers supplying raw materials to the major commercial starch processors in Nigeria were examined alongside their market participation categories. A multi-stage random sampling technique was used to select 96 farmers working in clusters in the eight cassava producing states. Data were analyzed using a combination of descriptive and inferential statistics, including the use of independent sample t-test technique to compare farmer's characteristics for the farmers' market participation categories. Results revealed that majority of the farmers were farming for subsistence with only 19.80% selling up to 50% of their farm produce as against 80.20% who sold less. Average mean values were found to be higher for the high market participants compared with the low participants for the age, farming experiences, education, farm size, gender, marital status, household size, training, season of harvesting and fertilizer use, but lower for use of credit, improved cassava variety, harvesting method, farming time devotion, and road access. Only farm size, gender and harvesting season at p<0.01 level and training at p<0.05 level were found to be statistically significant in distinguishing the high and low market participation categories. Policies and programmes aimed at promoting market participation among cassava farmers in Nigeria should be more impactful if directed at these significant factors.Int. J. Agril. Res. Innov. & Tech. 6 (2): 42-56, December, 2016

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ELEGBEDE, V. A., A. O. DIPEOLU, and A. M. SHITTU. "VALUE CHAIN ANALYSIS OF CASSAVA PRODUCTS IN OGUN STATE, NIGERIA." Journal of Humanities, Social Science and Creative Arts 13, no. 1 (November 8, 2019): 75–88. http://dx.doi.org/10.51406/jhssca.v13i1.1930.

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This study investigated the value chain analysis of cassava products in Ogun State Nigeria. Multistage was used to select 180 cassava processors and marketers. Socio-economic data were obtained from respondents with the use of pre-tested questionnaire. Data were analysed using descriptive statistics, budgetary technique and Analysis of variance (ANOVA). The study revealed that majority (84.3% and 52.8%) of Cassava peel processors and marketers were female. In addition, 60.2% of the processors have secondary education while 51.4% of the marketers also have secondary education. The value chain activities carried out by the processors were, Gari; harvesting, transportation, peeling, fetching, grating mill, sieving, toasting/drying and packaging. Fufu; harvesting, transportation, peeling, fetching, soaking, sieving and packaging. Lafun; harvesting, transportation, peeling, washing, fetching, soaking, slicing, grating mill, sieving, drying and packaging. The marketing activities includes; transportation, bagging and storage (Elegbede, et al., 2018) while marketers transported, packaged and put products in storage for future sales. The mean gross margin for gari, fufu and lafun processors and marketers along the chain were N35876.13, N120463.61 and N48098.72 respectively per annum while net farm income was estimated as N35477.85, N115259.44 and N48098.72. Also, the marketing margin for gari, fufu and lafun was estimated as N25273.07, N2982.65 and N21453.49 respectively per annum while the net marketing margin per annum was estimated as N18766.84, N22489.30 and N16203.81 respectively. Conversely, the marketing efficiency for the cassava products and by-products was estimated as 74.26%, 75.44% and 75.53% respectively for gari, fufu and lafu with lafu having the highest marketing efficiency when compared with the other cassava products (gari and fufu). From the results of the net farm income and marketing margin, it was discovered that fufu is more profitable along the cassava product value chain when compared to the other products (gari and lafu). This study therefore recommends that processing and marketing of lafun and fufu is efficient and their trade is profitable. Also, cassava processors and marketers should form cooperative groups to increase access to credit for higher output and trade of products.

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Tongchure, Siros. "Cassava Smallholdersâ€™ Participation in Contract Farming in Nakhon Ratchasrima Province, Thailand." Journal of Social and Development Sciences 4, no. 7 (July 30, 2013): 332–38. http://dx.doi.org/10.22610/jsds.v4i7.769.

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The most important raw materials for bio-ethanol in Thailand are cassava, sugar cane and molasses. However, cassava has been promoted as a feed stock for ethanol due to the minimal inputs for planting, high productivity and all-year planting and harvesting. The most important factor influencing ethanol using cassava production is the price of cassava feedstock. Contract farming could decrease production costs, increase efficiency in markets, provide lower interest rates, decrease risk management and create symmetric information for cassava smallholders. The scope of this study includes cassava cultivation and factors influencing contract participation using logit analysis. Results from a survey consisting of 130 non-contractors and 127 contractors showed there was a verbal communication between farmers and agricultural cooperatives and written contractual agreement between agricultural cooperatives and processors. In addition, contract participation is significantly influenced by gender of household head, education of household members, number of agricultural groups, input costs, machinery costs, incomes and credit access.

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Liu, Shihao, Shaojie Weng, Yulan Liao, and Dongyun Zhu. "Structural Bionic Design for Digging Shovel of Cassava Harvester Considering Soil Mechanics." Applied Bionics and Biomechanics 11, no. 1-2 (2014): 1–11. http://dx.doi.org/10.1155/2014/658743.

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In order to improve the working performance of cassava harvester, structural bionic design for its digging shovel was conducted. Taking the oriental mole cricket's paws as bionic prototype, a new structural bionic design method for digging shovel was established, which considers the morphology-configuration-function coupling bionic. A comprehensive performance comparison method was proposed, which is used to select the bionic design schemes. The proposed bionic design method was used to improve digging shovel structure of a digging-pulling style cassava harvester, and nine bionic-type digging shovels were obtained with considering the impact of soil mechanics. After conducting mechanical properties comparative analysis for bionic-type digging shovels, the bionic design rules were summed up, and the optimal design scheme of digging shovel was obtained through combining the proposed comprehensive performance comparison method with Analytic Hierarchy Process (AHP). Studies have shown that bionic design method not only can improve the overall mechanical properties of digging shovel, but also can help to improve the harvesting effect of cassava harvester, which provides a new idea for crops harvesting machinery's structural optimization design.

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Shadrack, Kwadwo Amponsah, Nketiah Berchie Joseph, Manu-Aduening Joseph, Owusu Danquah Eric, Osei Adu Jonas, Agyeman Adelaide, and Bessah Enoch. "Performance of an improved manual cassava harvesting tool as influenced by planting position and cassava variety." African Journal of Agricultural Research 12, no. 5 (February 2, 2017): 309–19. http://dx.doi.org/10.5897/ajar2016.11874.

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Jangyubol, Kanthida, Kittiwut Kasemwong, Theppanya Charoenrat, and Supenya Chittapun. "Magnetic–cationic cassava starch composite for harvesting Chlorella sp. TISTR8236." Algal Research 35 (November 2018): 561–68. http://dx.doi.org/10.1016/j.algal.2018.09.027.

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Muhindo, Honoré, François Wembonyama, Odette Yengele, Médard Songbo, Willy Tata-Hangy, Mouritala Sikirou, Justin Pita, and Godefroid Monde. "Optimum Time for Harvesting Cassava Tubers to Reduce Losses Due to Cassava Brown Streak Disease in Northeastern DRC." Journal of Agricultural Science 12, no. 5 (April 15, 2020): 70. http://dx.doi.org/10.5539/jas.v12n5p70.

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The present study aimed to determine the appropriate time to harvest cassava tuberous root which minimize the losses due to cassava brown streak disease (CBSD) in the region of Yangambi, DRC. To achieve the aim of the study, 38 cassava cultivars were evaluated in Yangambi INERA’s Research Center for CBSD in the roots at harvest time between 9 and 13 months after planting (MAP). All the 38 cultivars tested showed CBSD root necrosis symptoms. Foliar symptoms occurred on 37.6% of the evaluated cultivars while CBSD root necrosis varied significantly among cultivars (7.0% to 82.5%) depending on susceptibility and the age of plant. This indicates the differential response of the cultivars to CBSD infection. Whitefly population density decreased with age of cassava, it was of 3 whiteflies per plant (9 MAP) to 1 (10 MAP). We noticed that in older plants, whitefly population decreased from 1 at 11 MAP to none at 13 MAP. Although, some cultivars did not show CBSD symptoms up to 12 MAP, they were not necessarily less attractive to whitefly. Negative relationship (r = -0.08 and r = -0.25) has been found between whitefly number and foliar symptom severity or between whitefly and tuber necrosis severity. Beyond 12 MAP, CBSD necrosis (severity score 4) was present in the tubers of 3 cultivars (EUR/2011/0148, Yafelamonene and Ybi/2011/258). Our study shows that in order to mitigate the losses due to CBSD necrosis, the optimum harvesting time for cassava tubers in Yangambi is 9 MAP.

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Wabali, Victor C., and Obisie Favour. "Performance of Different Substrates on Growth Parameters of (Pleurotus ostreatus) Mushroom." European Journal of Agriculture and Food Sciences 3, no. 2 (April 24, 2021): 56–59. http://dx.doi.org/10.24018/ejfood.2021.3.2.265.

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Pleurotus ostreatus mushroom was cultivated on sawdust supplemented with different substrates, Cassava peel, Yam peel, and dried plantain leaf. Various treatment combinations of control, 2.5%, 5.0%, 7.5%, 10.0%, 12.5%, 15.0% and 17.5% carried out. Preparation of spawn, inoculation, incubation, and harvesting were done. Growth parameters of mean height, weight, diameter of fruiting bodies, mean stem girth and number of fruiting bodies were evaluated. Results showed that sawdust supplemented at 10% treatment level with Cassava peel was significantly higher than substrates in weight (229.34 g), height (95.01 cm) and number of fruiting bodies (103.21).

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Yang, Wang, Ran Yang, Juanjuan Li, Lin Wei, and Jian Yang. "Optimized tuber-lifting velocity model for cassava harvester design." Advances in Mechanical Engineering 10, no. 9 (September 2018): 168781401880086. http://dx.doi.org/10.1177/1687814018800863.

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The lack of optimized lifting velocity model for cassava tuber lifting results in the shortage of evidence of design of lifting velocity control system and large harvest loss during mechanized harvesting of cassava. First, an optimized velocity model of manually pulling tubers and a velocity model of mechanical lifting tubers were established using physical experiments. And then using the mechanical tuber-lifting velocity model, the mathematical models between coefficients of mechanical tuber-lifting velocity model and cassava harvesting quality were established based on numerical simulation and regression analysis. Moreover, the coefficients were optimized using optimization method and the mechanical optimal tuber-lifting velocity model was obtained. Finally, the optimization results and the mechanical optimal tuber-lifting velocity model were verified by simulation and physical experiment, respectively. The results show that the optimized manual pulling velocity model can be superimposed by a line and a sine curve or a concave downward parabola and a sine curve. The optimal coefficients’ combination of mechanical tuber-lifting velocity model is shown as follows: A = 0.056, B = 0.521, C = 0.048, D = 0.086, E = 38.506, and F = 1.165. The mechanical optimal tuber-lifting velocity model’s expression is simple and the model is reasonable. The mechanical optimal tuber-lifting velocity model, which is established using physical experiments, simulation method, and optimization technique, has great significance for designing lifting velocity control system.

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Lessa, L. S., C. A. S. Ledo, and V. S. Santos. "Effect of harvesting times on agronomic characteristics of industrial cassava genotypes." Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences 14, no. 2 (June 30, 2019): 1–6. http://dx.doi.org/10.5039/agraria.v14i2a5647.

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Suhartono, Roni. "MEKANISASI ALAT DAN DIVERSIFIKASI BERBAGAI PRODUK OLAHAN SINGKONG UNTUK MENINGKATKAN PANGSA PASAR DI DESA GANDASOLI KABUPATEN SUBANG." SELAPARANG Jurnal Pengabdian Masyarakat Berkemajuan 3, no. 1 (November 19, 2019): 81. http://dx.doi.org/10.31764/jpmb.v3i1.1130.

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ABSTRAK Desa Gandasoli merupakan suatu desa yang ada di Kabupaten Subang, dengan populasi masyarakatnya bekerja menjadi petani singkong. Permasalahan muncul ketika panen harga singkong sangat murah, sehingga perlu diolah lebih lanjut, akan tetapi tidak faham bagaimana cara pengolahannya. Tim Pengabdian Kepada Masyarakat (PKM) Politeknik Negeri Subang menawarkan solusi kepada masyarakat desa Gandosoli berupa pembentukan KUBE (Kelompok Usaha Bersama), pemberian mesin, pelatihan pengolahan singkong dan manajemen pemasaran, serta pengurusan izin jual berbentuk Pirt. Setelah melakukan serangkaian kegiatan tersebut terjadi peningkatan keterampilan dan pengetahuan dalam mengolah singkong dan terbentuklah KUBE dengan nama Gandasoli Mandiri yang siap dalam memproduksi olahan singkong. Olahan singkong yang sudah siap jual adalah opak dan tepung aci. Kata kunci: PKM, pengolahan singkong, desa Gandasoli. ABSTRACTGandasoli Village is a village in Subang Regency, with a population of people working as cassava farmers. The problem arises when harvesting cassava prices very cheap, so it needs to be processed further, but do not understand how to process. Community Service Team (PKM) The Subang State Polytechnic offers a solution to the community of Gandosoli village in the form of the establishment of KUBE (Joint Business group), machine delivery, cassava processing training and marketing management, and management Pirt-shaped selling permit. After doing a series of activities, there is an increase in skills and knowledge in processing cassava and formed KUBE with the name of Gandasoli Mandiri ready in producing processed cassava.Processed cassava that is ready to sell is opak and starch. Keywords: PKM, cassava processing, Gandasoli village

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Vlaar, Paul, Paul van Beek, and Richard Visser. "Genetic modification and its impact on industry structure and performance: post-harvest deterioration of cassava in Thailand." Journal on Chain and Network Science 7, no. 2 (December 1, 2007): 133–42. http://dx.doi.org/10.3920/jcns2007.x083.

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Genetic modification has led to fierce debates around the world. Nevertheless, scientific evidence for its potential effects on the structure and performance of industries has hitherto remained rather meagre. In this article, we take some preliminary steps towards closing this gap by exploring the effects of the introduction of a genetically modified cassava variety on the structure and efficiency of the starch industry in Thailand. Currently, producers of cassava starch are confronted with a problem called post-harvest deterioration, which reduces the quantity and quality of starch in cassava roots within 24 to 48 hours after harvesting, leading to lower payments for farmers and lower starch recovery rates for factories. In addition, post-harvest deterioration prohibits factory owners to hold large stocks of fresh cassava. Combined with a strong seasonal fluctuation of supply, this leads to a low utilisation of installed processing capacities at the starch factories. In this article, we examine how the structure and performance of the Thai starch industry would change in case a genetically modified cassava variety would be introduced that no longer suffers from post-harvest deterioration. After having interviewed 19 stakeholders in this industry, we developed two simple linear programming models to examine the optimal locations, capacity classes and utilisation percentages for starch processing plants in the Northeast of Thailand. Our findings demonstrate that an extension of the storability of cassava to 45 days will not only diminish the number of factories needed, but it will also cause most large-sized factories to be replaced with medium-sized plants. Moreover, introducing a new cassava variety with such properties is estimated to render benefits of approximately US $ 35 million for Thai cassava farmers and factory owners.

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Polthanee, Anan. "Cassava as an insurance crop in a changing climate: The changing role and potential applications of cassava for smallholder farmers in Northeastern Thailand." Forest and Society 2, no. 2 (November 26, 2018): 121. http://dx.doi.org/10.24259/fs.v2i2.4275.

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Approximately 80 percent of the 22 million people in Northeastern Thailand are engaged in agriculture, and the per capita income of the region is lower than in any other part of Thailand. The major constraint to crop production is rainfall. Although the region has an average annual rainfall greater than 1200 mm, the seasonal distribution of rainfall makes for challenging agricultural cultivation opportunities. The climate is characterized by rainy (May-October) and dry (November-April) seasons. Most (90%) farming is cultivated under rainfed conditions. In addition, most soils are characterized by a sandy texture, high acidity, low organic matter, low level of plant nutrients and low water holding capacity. Due to these conditions, and an increasingly unpredictable climate horizon, cassava has come to play an important economic role for smallholder farmers in the region. The inherent tolerance of cassava to stressful environments, requires minimal care, less investment, and provides greater flexibility in planting and harvesting. Although cassava is grown as a monoculture crop, it can also be grown profitably as a second crop in rice-based cropping systems without supplemental irrigation during the dry season, as well as intercropped in rubber plantations at early growth stages. Given the importance of cassava in farmer income, export values, marketing, and labor, this paper discusses the broader socio-economic and biophysical aspects of cassava due to its important role in future agrarian change for the region.

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ATSYO, Sena Yaw, Cem KORKMAZ, Omer Barıs OZLUOYMAK, and Emin GUZEL. "A REVIEW OF PHYSICAL AND MECHANICAL PROPERTIES OF CASSAVA RELATED TO HARVESTING MACHINES." MATTER: International Journal of Science and Technology 6, no. 2 (September 22, 2020): 102–18. http://dx.doi.org/10.20319/mijst.2020.62.102118.

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Lamare, D. Mapiemfu, A. F. Ngome, E. F. Eyenga, J. E. G. Mbassi, and C. Suh. "Harvesting Date Influences Cassava (Manihot Esculenta Crantz) Yield and Quality of Based-Products." Current Research in Agricultural Sciences 4, no. 3 (2017): 75–83. http://dx.doi.org/10.18488/journal.68.2017.43.75.83.

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Agbetoye, L. "Performance evaluation of three pre-lift soil loosening devices for cassava root harvesting." Soil and Tillage Research 48, no. 4 (October 27, 1998): 297–302. http://dx.doi.org/10.1016/s0167-1987(98)00136-6.

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Samidjo, G. S., and Sarjiyah. "Effect of planting and harvesting time on cassava (Manihot esculenta Crantz) Var. Gambyong." IOP Conference Series: Earth and Environmental Science 458 (April 4, 2020): 012036. http://dx.doi.org/10.1088/1755-1315/458/1/012036.

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Kanju, E., V. N. E. Uzokwe, P. Ntawuruhunga, S. Tumwegamire, J. Yabeja, A. Pariyo, and R. Kawuki. "Varietal response of cassava root yield components and root necrosis from cassava Brown streak disease to time of harvesting in Uganda." Crop Protection 120 (June 2019): 58–66. http://dx.doi.org/10.1016/j.cropro.2019.02.013.

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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 (August 30, 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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Alamu, Emmanuel Oladeji, Busie Maziya-Dixon, Consent Sibeso, Elizabeth Parkes, and Alfred Gilbert Dixon. "Variations of Macro- and Microelements in Yellow-Fleshed Cassava (Manihot esculenta Crantz) Genotypes as a Function of Storage Root Portion, Harvesting Time, and Sampling Method." Applied Sciences 10, no. 16 (August 5, 2020): 5396. http://dx.doi.org/10.3390/app10165396.

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The correct estimation of the mineral content of cassava (Manihot esculenta) genotypes is vital from a nutritional point of view. This study evaluated the effects of the storage root section, maturity, and sampling method on the macro- and microelements in yellow-fleshed cassava root genotypes. In total, 44 genotypes were grown in replicated field trials of 2 sets (set 25 and set 19) and were harvested at 9 and 12 months after planting. Two sampling methods, sampling with a cork borer (A = proximal, B = middle, C = distal or method 1) and sampling without a cork borer (L = Longitudinal or method 2), were used. The minerals of the samples from the two methods were determined using inductively coupled optical emission spectrometry (ICP-OES). K and Mn were the most abundant minerals, and Na, Mo, and Co were the least abundant. Genotype, method, and maturity had a strong influence on mineral concentrations. Harvesting time affected the concentration level of some macro- and microelements in cassava roots. Additionally, Ca, Mg, K, P, Mn, Cu, Ni, and Zn contents were significantly (p < 0.05) higher in the proximal and middle portions for method 1. K and P and Mn and B were positively correlated, but K and Na and Fe and Ni were negatively associated.

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Reis, Ronielli Cardoso, Luciana Alves de Oliveira, Jamille Mota Almeida, Palmira de Jesus Neta, Fabrine Dias Santos, Vanderlei da Silva Santos, and Renato Souza Cruz. "Culinary quality and sensory profile of cassava varieties harvested at different ages." Semina: Ciências Agrárias 42, no. 2 (February 24, 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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Sagrilo, Edvaldo, Pedro Soares Vidigal Filho, Manoel Genildo Pequeno, Maria Celeste Gonçalves-Vidigal, and Marcus Vinícius Kvitschal. "Dry matter production and distribution in three cassava (Manihot esculenta Crantz) cultivars during the second vegetative plant cycle." Brazilian Archives of Biology and Technology 51, no. 6 (December 2008): 1079–87. http://dx.doi.org/10.1590/s1516-89132008000600001.

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A study was carried out in Araruna County, State of Paraná, to understand the relationship between the total dry matter yield and its proportion allocated to the storage roots of cassava (Manihot esculenta Crantz) plants in the second vegetative cycle. The experimental design was a randomized complete block in split-plot scheme with four replications. The plots consisted of the Mico, IAC 13 and IAC 14 cultivars and the monthly harvesting dates were assessed in the sub-plots. The results showed that the Mico and IAC 13 cultivars were more efficient in allocating dry matter to the storage roots. The IAC 14 cultivar allocated a higher proportion of assimilates to stems compared with the other two cultivars. With regard to the influence of harvesting time, the lowest harvest indexes were observed in the periods of more intense vegetative growth. However, the highest carbohydrate proportions were allocated to the storage roots during periods of low vegetative growth.

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Weçolovis, J., J. R. Unfried, and R. Montalván. "Starch content variation in cassava cultivars during four harvesting seasons in Marechal Cândido Rondon, Brazil." Cropp Breeding and Applied Biotechnology 3, no. 4 (December 31, 2003): 255–60. http://dx.doi.org/10.12702/1984-7033.v03n04a02.

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Gbenga Olorunshola Alege, Chinenye Sylvia Anyoku, Comfort Kehinde Olubiyo, Gloria Taiye Olubiyo, Blessing Adejoh, and Daniel Yomi Onemayin. "Chromosomal aberrations induced by cassava industrial effluent using Allium Cepa assay." GSC Biological and Pharmaceutical Sciences 13, no. 3 (December 30, 2020): 097–104. http://dx.doi.org/10.30574/gscbps.2020.13.3.0386.

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This study assessed the heavy metal compositions and chromosome aberrations induced by cassava industrial effluent using Allium cepa meristem assay. Effluent collected at the point of discharge from the cassava processing factory located at Lokoja, Kogi State Nigeria was analyzed for quantity of Cadmium (Cd), Chromium (Cr), Copper (Cu), Manganese (Mn), Iron (Fe), Nickel Ni, Cobalt (Co) and Lead (Pb) using Atomic Absorption Spectrophotometer method. Onion (Allium cepa) roots were allowed to grow in beakers containing different concentrations of cassava industrial effluent (i.e. 25%, 50%, 75% and 100%) and the control for 24 hours. Harvesting of the tips for chromosome observations was carried out between 8:00 to 9:00am West Africa Time. Data pooled under X400 magnification of the light microscope for mitotic phases and chromosome aberrations were analyzed using Analysis of Variance (ANOVA) while means with significant difference across concentrations were separated using Duncan Multiple Range Test (DMRT). The results revealed that only Cadmium (Cd) and Lead (Pb) concentrations in the effluent were higher than the minimum values recommended by World Health Organization. The effluent also produce binucleate cells, variant chromosomes, C-mitosis, vacuolated cells, tripolar anaphase and anaphase bridge which suggests the mutagenic and cytotoxic activities of the industrial effluent. The decrease in the Mitotic Indices (MI) of effluent-treated root cells compared to the control indicates mito-depressive ability of the effluent at every concentration. Regular monitoring of industries for compliance to treatment of effluent before releasing them into the environment is recommended.

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JOHNSTON, M., and I. C. ONWUEME. "EFFECT OF SHADE ON PHOTOSYNTHETIC PIGMENTS IN THE TROPICAL ROOT CROPS: YAM, TARO, TANNIA, CASSAVA AND SWEET POTATO." Experimental Agriculture 34, no. 3 (July 1998): 301–12. http://dx.doi.org/10.1017/s0014479798343033.

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Plants of yam, taro, tannia, cassava and sweet potato were raised under shade or in full sunlight and the effect of shade on leaf chlorophyll and carotenoids was examined to determine and compare the relative shade tolerance and adaptability of the var ious species. All five species of root crops adapted to shade. The chlorophyll concentration was higher, while the chlorophyll a:b ratio, carotenoids per unit chlorophyll and the weight per unit area of leaf were lower in the shade than in the su n in yam, tannia, taro, cassava and sweet potato. All species had larger leaves and more chlorophyll per leaf in the shade. The extent of the changes, however, differed between species. The aroids (taro and tannia) appeared to be shade-tolerant species as their chlorophyll a:b ratios changed less than those of the other species in the shade, suggesting that their light-harvesting systems may be normally adapted to shade conditions. Taro and tannia also adapted to shade by a greater proportional i ncrease in leaf size, a smaller reduction in leaf weight per unit area and a greater proportional increase in chlorophyll and carotenoids per leaf than the other species. Yam compensated for shade by having a large proportional increase in leaf size and a ppeared to be moderately tolerant of shade. Sweet potato and cassava appeared to be the least tolerant of shade of the major tropical root crops.

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Fakir, MSA, M. Jannat, MG Mostafa, and H. Seal. "Starch and flour extraction and nutrient composition of tuber in seven cassava accessions." Journal of the Bangladesh Agricultural University 10, no. 2 (April 20, 2013): 217–22. http://dx.doi.org/10.3329/jbau.v10i2.14698.

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Cassava (Manihot esculenta Crantz) roots (tubers) are used as staple food. Starch extracted from tubers is widely utilized as raw materials in industries. Dry matter (DM) content, starch and flour extraction and proximate composition were investigated in seven cassava accessions (Coc-A1, Kh-A2, Cow-A3, Sa-A4, Me-A5, Va-A6 and Sy-A8.) in 2010- 2011. Leaf DM varied from 20.51% in Me-A5 to 29.01% in Sy-A8; that of stem from 27.24% in Va-A6 to 32.10% (average of Sy-A8, Me-A5 and Sa-A4); and that of tuber from 37.30% in Kh-A2 to 45.26% in Sy-A8. Starch was extracted by blending chopped tuber followed by decantation. Tubers were sliced, sun dried and milled into flour. Tuber starch content (fresh wt. basis) varied between 15.04% in Sy-A8 and 24.97% (average of Coc-A1 and Me-A5); that of peel from 4.54% in Va-A6 to 5.85% in Coc-A1. Crude protein varied from 1.80% (average of Kh-A2, Cow-A3 and Sy-A8) to 4.53% in Va-A6. Crude fiber content varied from 1.95% (average of Sa-A4 and Coc-A1) to 4.27% in Cow-A3. Cyanogens present in cassava plant escape as hydrogen cyanide (HCN) during harvesting and processing. Variation for HCN existed and it was 140.95 mg/kg fresh tuber (average of Sy-A8 and Coc-A1) to 546.0 mg/kg fresh tuber in Va-A6. There was no detectable HCN in the extracted flour and starch. It may be concluded that genetic variation for DM, starch, protein and HCN existed in seven cassava accessions, and Coc-A1 may be a better one due to its lower HCN, higher DM and starch content. DOI: http://dx.doi.org/10.3329/jbau.v10i2.14698 J. Bangladesh Agril. Univ. 10(2): 217-222, 2012

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Ariyo, OA, AGO Dixon, and GI Atiri. "Cassava leaf harvesting as vegetables; a cause of vulnerability of cassava plant to cassava mosaic disease and eventual yield reduction: Ernte von cassavablättern als gemüse; eine ursache für die anfälligkeit der cassavapflanze für die cassava-mosaikkrankheit und für spätere ertragseinbußen." Archives Of Phytopathology And Plant Protection 36, no. 3-4 (November 2003): 221–33. http://dx.doi.org/10.1080/03235400310001608527.

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El-Sayed, S., A. Gharib, Safaa Mansour, and Shimaa Hanafy. "EFFECT OF SOME MINERAL NPK RATES AND HARVESTING DATES ON PRODUCTIVITY AND QUALITY OF CASSAVA YIELD." Journal of Plant Production 3, no. 5 (May 1, 2012): 913–24. http://dx.doi.org/10.21608/jpp.2012.84251.

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Baker, GR, S. Fukai, and GL Wilson. "The response of cassava to water deficits at various stages of growth in the subtropics." Australian Journal of Agricultural Research 40, no. 3 (1989): 517. http://dx.doi.org/10.1071/ar9890517.

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Cassava is a potential tuber crop for northern Australia where water stress is likely to occur during some stages of growth. Field and glasshouse experiments were conducted to examine the response of cassava to soil water deficits which developed at various stages. The field experiments, covering 10-month growth durations from planting in spring to harvesting in winter, showed that water stress occurring in summer or winter had small effects, but in autumn severely reduced the final yield. Autumn was the time of maximum bulking of underground storage organs in well-watered plants, and water stress which reduced assimilate production also reduced bulking. Temperature at this time was suboptimal for canopy development, and leaf area which was reduced during the stress did not increase after its relief, affecting further the growth of storage organs. Similarly, in the glasshouse experiment, plants recovered rapidly during early stages of growth, but when stress occurred later leaf area was reduced greatly, and recovery after its termination was poor. In all experiments, water deficits affected yield of storage organs but not the pattern of assimilate distribution, resulting in similar harvest indices among the plants of different watering treatments. It is concluded that the reduction in cassava yield (cv. M Aus 7) is caused by the reduction in total biomass production, and that stress occurring later in the season is most detrimental to yield because of the additional effect of reduced ability of old plants to recover leaf area after the stress is relieved.

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Zhao, Yongguo, Hua Kong, Yunling Guo, and Zhi Zou. "Light-harvesting chlorophyll a/b-binding protein-coding genes in jatropha and the comparison with castor, cassava and arabidopsis." PeerJ 8 (January 28, 2020): e8465. http://dx.doi.org/10.7717/peerj.8465.

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The Lhc (light-harvesting chlorophyll a/b-binding protein) superfamily represents a class of antennae proteins that play indispensable roles in capture of solar energy as well as photoprotection under stress conditions. Despite their importance, little information has been available beyond model plants. In this study, we presents a first genome-wide analysis of Lhc superfamily genes in jatropha (Jatropha curcas L., Euphorbiaceae), an oil-bearing plant for biodiesel purpose. A total of 27 members were identified from the jatropha genome, which were shown to distribute over nine out of the 11 chromosomes. The superfamily number is comparable to 28 present in castor (Ricinus communis, Euphorbiaceae), but relatively less than 35 in cassava (Manihot esculenta, Euphorbiaceae) and 34 in arabidopsis (Arabidopsis thaliana) that experienced one or two recent whole-genome duplications (WGDs), respectively. In contrast to a high number of paralogs present in cassava and arabidopsis, few duplicates were found in jatropha as observed in castor, corresponding to no recent WGD occurred in these two species. Nevertheless, 26 orthologous groups representing four defined families were found in jatropha, and nearly one-to-one orthologous relationship was observed between jatropha and castor. By contrast, a novel group named SEP6 was shown to have been lost in arabidopsis. Global transcriptome profiling revealed a predominant expression pattern of most JcLhc superfamily genes in green tissues, reflecting their key roles in photosynthesis. Moreover, their expression profiles upon hormones, drought, and salt stresses were also investigated. These findings not only improve our knowledge on species-specific evolution of the Lhc supergene family, but also provide valuable information for further studies in jatropha.

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Hobman, F. R., G. L. Hammer, and R. K. Shepherd. "Effects of Planting Time and Harvest Age on Cassava (Manihot esculenta) in Northern Australia. II. Crop Growth and Yield in a Seasonally-Dry Environment." Experimental Agriculture 23, no. 4 (October 1987): 415–24. http://dx.doi.org/10.1017/s0014479700017373.

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SUMMARYTwo experiments, one irrigated and one dryland, were conducted at a site having a seasonally-dry, tropical climate. A range of planting times, with sequential harvests to age 24 months, was used to study cassava growth and yield. Very high yields of 35 to 45 tonnes dry matter per hectare were recorded for the irrigated experiment. Water limitation restricted yields to 15 to 26 tonnes in the dryland experiment. Known or inferred environmental controls of the yield-determining factors of growth rate, growth duration, and partitioning of assimilates to harvest-able organs were used to interpret the results and thus derive general guidelines for the timing of planting and harvesting in seasonally-dry environments.

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Odedina, Joy N., Sunday Ojo Adigbo, Peter Kulako, Peter Iluebbey, Thomas O. Fabunmi, Clement G. Afolabi, and A. A. Osipitan. "Effect of cropping system and age of plant at harvest on tuber rot and performance of elite cassava varieties in derived savannah." Acta agriculturae Slovenica 109, no. 2 (September 26, 2017): 165. http://dx.doi.org/10.14720/aas.2017.109.2.01.

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Devastated tuber rot disease among farmers prompted the evaluation of the elite improved varieties in the intercrop and the practice of delaying harvesting when there is glut in the market necessitated this study. Trial was carried out at the Federal University of Agriculture, Abeokuta between 2011 and 2014 to evaluate yield performance of 21 elite cassava varieties planted as sole crop verse intercropped and harvested at different age. The 2 x 21 x 3 factorial experiment was laid out in randomized complete block design and replicated three times. The tuber yield obtained from sole plot in 2011/2012 cropping season was significantly higher than intercrop whereas those of 2012/2014 cropping season were similar. Land Equivalent Ratio was above one in both cropping seasons indicating that the performance of the improved varieties in intercrop was efficient. The pooled mean tuber yield showed that TMS 30572, 92/0326, 95/0211, 01/1371, 00/0338, 01/0046, 00/0098, 01/1097, 01/0085, 98/0581 and 98/510 were among the top eight varieties. Harvesting could be delayed up to 15 months after planting to reduce tuber rot.

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Franck, Hongbété, Mestres Christian, Akissoé Noël, Pons Brigitte, Hounhouigan D. Joseph, D. Cornet, and Nago C. Mathurin. "Effects of cultivar and harvesting conditions (age, season) on the texture and taste of boiled cassava roots." Food Chemistry 126, no. 1 (May 2011): 127–33. http://dx.doi.org/10.1016/j.foodchem.2010.10.088.

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ISABIRYE, M., G. RUYSSCHAERT, L. VANLINDEN, J. POESEN, M. MAGUNDA, and J. DECKERS. "Soil losses due to cassava and sweet potato harvesting: A case study from low input traditional agriculture." Soil and Tillage Research 92, no. 1-2 (January 2007): 96–103. http://dx.doi.org/10.1016/j.still.2006.01.013.

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Zou, Zhi, and Jianghua Yang. "Genomics analysis of the light-harvesting chlorophyll a/b-binding (Lhc) superfamily in cassava (Manihot esculenta Crantz)." Gene 702 (June 2019): 171–81. http://dx.doi.org/10.1016/j.gene.2019.03.071.

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Oliveira, Eli Carlos de, Luiz Henrique Campos de Almeida, Claudemir Zucareli, Teresa Losada Valle, José Roberto Pinto de Souza, and Édison Miglioranza. "Analysis of cassava growth at different harvest times and planting densities." Semina: Ciências Agrárias 40, no. 1 (February 15, 2019): 113. http://dx.doi.org/10.5433/1679-0359.2019v40n1p113.

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Vegetative canopy architecture, and plant population density, has a direct influence on the growth and production of crops. The objective of this study was to evaluate the growth of four cassava cultivars of contrasting canopies, in four population densities, during two vegetative cycles. A randomized complete block design was used in a subdivided plot scheme, with two replications, with the population densities in the plots and harvesting times in the subplots. ‘Branca de Santa Catarina’ (BSC), ‘IAC 13’, ‘IAC 14-18’ and ‘Fibra’ were collected every four months, beginning at 120 and ending at 720 days after planting (DAP). Primary data on dry matter and leaf area were calculated. The total dry mass (Wt), leaf area ratio (La), leaf area index (L), relative growth rate (Rw), and net assimilation rate (Ea) were calculated based on the primary data. All cultivars accumulated more total dry mass (Wt) at lower planting densities. The plants reached a higher leaf area ratio (La) 120 days after planting. In the second vegetative cycle, the four cultivars, independently of the population, presented a reduction of assimilate translocation to the leaves. Relative growth rate (Rw) of the cultivars varied strongly with the plant population only in the second cycle. ‘IAC 14-18’ showed greater dependence on spacing, and ‘Fibra’ less dependence. Growth (Rw) and assimilatory (Ea) rates decreased at the end of the first cycle, then increased slowly until the end of the second cycle of vegetation.

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46

Khang, Duong Nguyen, Hans Wiktorsson, and Thomas R. Preston. "Yield and Chemical Composition of Cassava Foliage and Tuber Yield as Influenced by Harvesting Height and Cutting Interval." Asian-Australasian Journal of Animal Sciences 18, no. 7 (November 26, 2005): 1029–35. http://dx.doi.org/10.5713/ajas.2005.1029.

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47

Hue, Khuc Thi, Do Thi Thanh Van, Inger Ledin, Ewa Wredle, and Eva Sp철rndly. "Effect of Harvesting Frequency, Variety and Leaf Maturity on Nutrient Composition, Hydrogen Cyanide Content and Cassava Foliage Yield." Asian-Australasian Journal of Animal Sciences 25, no. 12 (October 22, 2012): 1691–700. http://dx.doi.org/10.5713/ajas.2012.12052.

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Hammer, G. L., F. R. Hobman, and R. K. Shepherd. "Effects of Planting Time and Harvest Age on Cassava (Manihot esculenta) in Northern Australia. I. Crop Growth and Yield in Moist Environments." Experimental Agriculture 23, no. 4 (October 1987): 401–14. http://dx.doi.org/10.1017/s0014479700017361.

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SUMMARYA range of planting times, with sequential harvests to age 24 months, was used to determine crop growth and yield of cassava at two locations, one having a humid tropical climate and the other humid sub-tropical. Yield was doubled during the second year at the sub-tropical site. At the tropical site yield was very high after one year, but root rots occurred in the second year. The dry matter percentage of storage roots fluctuated seasonally and was highest during the cooler months when canopy vigour was lowest. Known or inferred environmental controls of the yield-determining factors of growth rate, growth duration, and partitioning to harvestable organs were used to interpret the results and thus derive guidelines for timing of planting and harvesting in moist environments.

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Akinbile, Babatunde J., Leah C. Matsinha, Banothile C. E. Makhubela, and Abayneh A. Ambushe. "Towards Sustainability Pathway with Bio-Derived Platinum and Palladium Catalyst for Furfural Hydrogenation—A Novel Greener Approach in Catalysis." Minerals 11, no. 8 (August 19, 2021): 895. http://dx.doi.org/10.3390/min11080895.

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The use of living plants to recover precious metals with potential catalytic activity is still at the infant stage. In this study, selective hydrogenation of furfural to furfuryl alcohol using novel bio-ore catalysts recovered from the end stage of phytomining process is demonstrated. The phytomining process was carried out in the green house by artificially contaminating cassava (Manihot esculenta) plant with 500 mg/L palladium (Pd) and platinum (Pt) solutions for a period of eight weeks. After harvesting, concentrations of metals as high as 78 ± 0.047 and 1276 ± 0.036 µg/g of Pd and Pt, respectively, were detected in the calcinated root of cassava. The produced bio-ore catalysts; @PdCassCat and @PtCassCat were fully characterized with the following techniques: transmission electron microscopy (TEM), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), powder X-ray diffraction (pXRD), N2-sorption, and UV-visible spectroscopy techniques and directly applied as catalysts for hydrogenation of furfural to furfuryl alcohol. The reaction was conducted under an optimized condition (furfural (10 mmol), triethylamine (Et3N) (10 mmol), formic acid (20 mmol), temperature (160 °C), catalyst amount (40 mg)) realizing a yield of 76.5% and 100% furfuryl alcohol using @PdCassCat and @PtCassCat, respectively. The catalytic activities of the @PdCassCat and @PtCassCat were excellent as well as recyclable up to four and five times, respectively.

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Sumithra, R., M. Thushyanthy, and T. Srivaratharasan. "Assessment of soil loss and nutrient depletion due to cassava harvesting: A case study from low input traditional agriculture." International Soil and Water Conservation Research 1, no. 2 (September 2013): 72–79. http://dx.doi.org/10.1016/s2095-6339(15)30041-1.

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Journal articles on the topic 'Cassava Harvesting'

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