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1
KAUR, JASHANDEEP, MAMTA PATHAK, and DHARMINDER PATHAK. "Inheritance of resistance to yellow vein mosaic virus disease in interspecific crosses of Abelmoschus." Indian Journal of Agricultural Sciences 90, no. 12 (February 10, 2021): 2302–6. http://dx.doi.org/10.56093/ijas.v90i12.110312.
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Okra [Abelmoschus esculentus (L.) Moench] is an important vegetable crop grown in tropical and subtropical regions of the world. The total production of okra is drastically reduced due to various biotic and abiotic stresses. Among the biotic stresses, viral disease is of major concern. In this context, the present investigation has been carried out to understand the inheritance of yellow vein mosaic virus (YVMV) disease resistance in okra using segregating populations of A. esculentus cv. Punjab Padmini × A. moschatus and A. esculentus cv. Punjab Padmini × A. tuberculatus and to study the chromosome number of the three species involved in the A. esculentus cv. Punjab Padmini, A. moschatus, A. tuberculatus and their inter-specific F1 hybrids. The results of crossability studies revealed that, the wild species A. moschatus and A. tuberculatus are compatible with cultivated specie A. esculentus cv. Punjab Padmini. Inheritance of YVMV disease has been observed to be simple and governed single dominant gene in case of A.esculentus× A. moschatus cross and a single recessive gene in A. esculentus cv. Punjab Padmini × A. tuberculatus cross.
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ZaharaddeenSamaila, Gilima, David Kashina Boniface, Olalekan Oyeleke Banwo, Alegbejo Mathew Dada, Charles Chindo Agart, and Ibrahim Tijjani. "Occurrence and Distribution of Viruses Associated with Okra and Their Alternative Hosts in Kaduna and Zamfara States, Nigeria." Journal of Tropical Crop Science 8, no. 03 (October 20, 2021): 177–86. http://dx.doi.org/10.29244/jtcs.8.03.177-186.
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One of the major constraints to production of okra (Abelmoschus esculentus L.) in Nigeria and in particular in Kaduna and Zamfara States, is the problem of okra mosaic virus and okra leaf curl virus. This study was carried out to provide information on the occurrence and distribution of okra mosaic and okra leaf curl viruses on okra, in Kaduna and Zamfara states, Nigeria. A survey of okra-producing farms was carried out during dry and wet seasons of 2017 cropping season in Kaduna (Zaria, Lere, and Igabi Local Government Areas) and Zamfara (Gusau, Bungudu, and Zurmi LGAs) states. Leaf samples (15) of symptomatic okra plants were collected from each farm in the study area. The total number of plants and the number of symptomatic plants within each subplot were recorded, and the disease incidence was determined. Double Antibody Sandwich Enzyme-Linked Immunosorbent Assay (DAS- ELISA) kit was used in the detection of Okra Mosaic Virus while Polymerase Chain Reaction (PCR) was employed for the detection Okra Leaf Curl Virus. The results showed that all the okra leaf samples tested for OLCV were negative in this study while OkMV was tested positve in all the samples with a recorded incidence of 20 % and 14 % in Kaduna and Zamfara states respectively, however, only 8 out of total weed samples were also tested positive for OKV, but all were tested negative to OLCV.
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Y., Aminu,, Maryam, M.G., and Kabiru, S.A. "Hormonal Response of Gibberellin (Ga3), Grafting and Seasonal Variations on Growth and Yield Parameters on Okra (Abelmoschus Esculentus)." American International Journal of Biology and Life Sciences 1, no. 2 (November 12, 2019): 33–39. http://dx.doi.org/10.46545/aijbls.v1i2.122.
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The effect of Gibberellin Hormonal Response and Grafting methods on the Growth and Yield of Okra was investigated, with the aim of inducing variability that could be exploited in the improvement of some quality traits in Okra plants. Gibberellin, grafting and a combination of grafting with Gibberellin) were applied on to the Okra seeds. The seeds of Okra were treated at four different concentrations of Gibberellin (0.1mM, 1.0 mM, 2.0 mM and 0.0 mM as control) after which some of the mutants were grafted using tongue grafting method at seedlings stage. The other set of seeds were not treated with the hormone but were grafted at seedlings stage. The results obtained revealed highly significant difference (P≤ 0.01) in the effects of Gibberellin on survival rates, number of fruits, and fruit weight. Similarly, highly significant differences (P≤0.01) were found between the treatments in Survival rate, except on the number of fruits and fruit weight, where no significant differences exist. More so, significant differences were found in the traits between the seasons except in fruit number. The result showed that Gibberellin and grafting improve important quality traits of Okra. The mutants and grafted Okra could be grown both during the rainy and dry seasons, while 0.1 mM concentration of Gibberellin and grafting improve some important quality traits of Okra that could be utilized for further improvement of Okra. However, the response of Okra to grafting was higher. Based on the findings, the study concluded that, grafting improves some important quality traits of Okra that are of high economic value and possible recommendations that could be made.
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Menzel, Margaret Y., and Kenneth L. Richmond. "A revised map of chromosome 15 in Gossypium hirsutum." Canadian Journal of Genetics and Cytology 28, no. 2 (April 1, 1986): 272–77. http://dx.doi.org/10.1139/g86-038.
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Three translocations involving chromosome 15 (H15) in cotton, T4R;15L 1040, T11L;15L 1058a, and T15R;20R SL15, were tested against the H15 marker genes okra leaf [Formula: see text] and veins fused (vf). The latter gene was also tested against T15L;16L 2767. Duplication deficiencies monosegmental for H15 (easily recognized by their narrow distorted bacteoles) showed that [Formula: see text] is in the right (R) arm distal to the SL15 breakpoint (bp-SL15) and cannot be distal to bp-1040 or bp-1058a in the left (L) arm. Recombination frequencies between the three bp's and [Formula: see text] showed that the order is (L) bp-1058a–bp-1040–centromere–bp-SL15–[Formula: see text]. [Formula: see text] is approximately 28 cM (centi-Morgan) from the centromere. The L and R arms of H15 defined by translocations correspond, respectively, to the long and short arms defined by telosomes. Duplication deficiencies monosegmental for H15 showed that vf is not distal to either the L arm or the R arm bp's in H15. Therefore vf and the genes Lg, s, and cr, which are closely linked to vf, cannot be located on H15 as had been assumed. "Linkage group II" thus contains genes located on two different chromosomes. We suggest retaining linkage group II for Lg and genes closely linked to it and designating the group of genes on H15 linked to [Formula: see text] as linkage group XIX.Key words: cotton, translocations, linkage maps, duplication–deficiencies, okra leaf, veins fused.
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Singh, Bharat P., and James D. Sutton. "SEASONAL PATTERN OF VEGETATIVE GROWTH IN OKRA." HortScience 25, no. 9 (September 1990): 1072a—1072. http://dx.doi.org/10.21273/hortsci.25.9.1072a.
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Little is known about the morphology of okra (Abelmoschus esculentus Moench) plant. This information is critical to understanding of plant growth and possible factors limiting yield. Therefore, a field study was conducted during 1989 to determine the changes in leaf number, leaf dry weight and stem dry weight in okra during the fruiting period. Four okra genotypes, PI-178818, PI-211573, Lee and Clemson spineless, were planted in randomized complete block design with four replications. All four genotypes had similar stem dry weight, but differed significantly in leaf number and leaf dry weight. During the reproductive period, 42% of new leaves, 61% of leaf dry weight and 82% of stern dry weight were formed. PI-178818 had highest leaf number and maximum leaf dry weight, but produced lowest fruit yield. The results suggested that since vegetative growth and fruiting proceeds simultaneously in okra, partitioning of dry weight to pod maybe critical for high okra yields.
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YORA, MUHARAMA, MUHAMAD SYUKUR, and SOBIR SOBIR. "Characterization of phytochemicals and yield components in various okra (Abelmoschus esculentus) genotypes." Biodiversitas Journal of Biological Diversity 19, no. 6 (October 9, 2018): 2323–28. http://dx.doi.org/10.13057/biodiv/d190641.
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Yora M, Syukur M, Sobir. 2018. Characterization of phytochemicals and yield components in various okra (Abelmoschus esculentus) genotypes. Biodiversitas 19: 2323-2328. Okra is a group of vegetable and medicinal plants possessing various health benefits. This plant has different shapes, colors and nutritional content. In Indonesia, this plant has not been widely cultivated, because the socialization and information of okra benefits to the Indonesian people are still limited. The aims of this study were to analyze phytochemicals, anthocyanins and carotene content, and to analyze the correlation among okra genotypes based on their morphological characters. This study was conducted from September 2017 to January 2018, using Complete Randomized Group Design with three replications and 13 genotypes namely PB01Nai, PB02Zah, PB03Clem, PB04Stri, PB13-293, PB05-291, PB06-004, PB07-127, PB08P1, PB09P2, PB10-MC, PB11-069, and PB12-OR. The observation was made on the variables of phythochemical, anthocyanin, carotene, chlorophyll and yield components on okra fruit. The results showed that all okra fruits have steroid phytochemical content and some of them had phytochemical content of Saponin and Tanin. Based on the carotene and chlorophyll analysis of 13 okra fruit genotypes, it showed that PB11-069 genotype contained the highest carotene and chlorophyll contents. While okra fruit having the highest anthocyanin content was PB05-291. The results of cluster analysis showed that okra was clustered into three color groups. The anthocyanin content found in okra fruit does not correlated with the yield component variable. Chlorophyll-α, β, and total chlorophyll are positively correlated to carotene in okra fruit and variable number of fruits. The character of number and weight per plant greatly influences the determination of the selection process. Accordingly, the characters can be used as a selection character so as to produce a high yield okra containing high chlorophyll and carotene contents.
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Ajayi, Emmanuel, Christopher Okonji, Olamide Ayanlola, Temidayo Olofintoye, and Deborah Oyelowo. "Improving the growth and yield of okra by intercropping with varying populations of legumes." Journal of Agricultural Sciences, Belgrade 65, no. 3 (2020): 213–24. http://dx.doi.org/10.2298/jas2003213a.
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An experiment was conducted at the Vegetable Research Farm of the National Horticultural Research Institute, Ibadan, Oyo State, Nigeria, in the rain-forest agro-ecological zone in 2016 and 2017 to determine suitable cropping systems to increase the yield of okra. The seed of okra (Abelmoschus esculentus (L.) Moench), cv. LD-88, was planted at a spacing of 60 ? 40 cm as an intercrop and monocrop to produce an average density of 4.2 plants?m-2; the intercrops cowpea (Vigna unguiculata (L.) Walp.), var. Ife brown, and peanut (Arachis hypogaea L.), var. Kampala, were planted to provide average densities of 5.6 plants?m-2, 4.2 plants?m-2, 3.3 plants?m-2 and 2.7 plants?m-2. Data were collected on plant height, number of leaves, leaf area, stem diameter and fruit yield of okra. Year affected plant height, number of leaves, leaf area, stem diameter and fruit yield of okra intercropped with legumes at different densities. Legume densities affected plant height, number of leaves, stem diameter, leaf area and fruit yield. The interaction of year ? legume densities affected plant height, number of leaves, stem diameter, leaf area and fruit yield of okra. Intercropping okra with peanut at the density of 2.7 plants?m-2 enhanced its growth and yield and appeared to be the best configuration for these crops.
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Makinde, Aderemi Isaiah, Kehinde O. Oyekale, and David S. Daramola. "GROWTH AND YIELD OF OKRA (Abelmoschus esculentus L. Moench) AS INFLUENCED BY FERTILIZER APPLICATION UNDER DIFFERENT CROPPING SYSTEMS." Agricultural Social Economic Journal 22, no. 1 (January 31, 2022): 29–36. http://dx.doi.org/10.21776/ub.agrise.2022.022.1.5.
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Reduction in agricultural land with increasing population has led to a need to combined more than one crop to maximize limited land resources and thus require an improvement. A field experiment was conducted during the growing seasons of 2019 in two locations in Southwest Nigeria to assess the effect of cropping system and fertilizer application on the yield of okra intercropped with jatropha. The experiment was a split-plot arrangement in a Randomized Complete Block design, replicated three times. Fertilizer types were the main plots (NPK, Organic, Organic + NPK (50:50) and control while the cropping systems (sole okra, sole Jatropha and their intercrop) was sub-plot. Data were collected to determine okra growth includes: plant height, number of leaves/ plant, leaf area and the yield by number of days to 50 % flowering, number of fruits/ ha, fruit yield and fruiting duration. Jatropha growth parameters taken include: plant height (cm), number of leaves/plant. Results showed that okra can be intercropped with jatropha without any reduction it its performance. Growth of jatropha as well as okra yield was significantly better in fertilized plots than the unfertilized plots, with complementary use of organic and inorganic fertilizer producing the best results.
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Barus, Ria Anindi Antika. "GROWTH RESPONSE AND PRODUCTION OF TWO VARIETIES OF OKRA (Abelmoschus esculantus L. Moench) ON GIVING VARIOUS TYPES OF ORGANIC FERTILIZER." Agripreneur : Jurnal Pertanian Agribisnis 10, no. 1 (June 30, 2021): 1–9. http://dx.doi.org/10.35335/agripreneur.v10i1.1945.
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Okra is a vegetable plant that can be consumed directly or made into processed foods and has good pharmacological effects in the health sector. Okra has a high economic value when compared to other vegetables. The problem faced in okra cultivation is that this plant is not well known by the Indonesian people. The application of organic fertilizer to okra cultivation is expected to improve quality and quantity. This research was carried out on community land for the construction of the Medan Selayang sub-district with an altitude of ± 25 meters above sea level. This research was conducted from May to September 2016, using a randomized block design with 2 treatment factors. The first factor is varieties with 2 types, namely burgundy red okra and Garibar green okra and the second factor is the application of organic fertilizer with 4 types, namely without organic fertilizer, compost, vermicompost fertilizer, and chicken manure. The results showed that the varietal treatments were significantly different on plant height 10-14 WAP, flowering age, number of fruit per plant, fruit weight per plant, number of fruit per plot, fruit length, fruit diameter and canopy wet weight. The application of various kinds of organic fertilizers significantly affected the parameters of plant height increase 10-14 WAP, number of leaves 10-14 WAP, flowering age, number of fruit per plant, fruit weight per plant, and number of fruit per plot. The interaction between varietal treatment and the application of various kinds of organic fertilizers had a significant effect on the increase in plant height 10-14 WAP.
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Habiba, Rifna Nur, Widyati Slamet, and Eny Fuskhah. "Pertumbuhan dan produksi Okra merah (Abelmoschus esculentus L. Moench) pada dosis pupuk kompos serasah yang berbeda dan pemangkasan." Journal of Agro Complex 2, no. 2 (June 10, 2018): 180. http://dx.doi.org/10.14710/joac.2.2.180-187.
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The research aims was to investigate the interaction between dose of leaf compost and pruning on the growth and production of red okra. The research was assigned in basic design of completely randomized 4x2 factorial with three replications. The first factor was doses of leaf K (0, 50, 100, 150 kg N / ha). The second factor was pruning P (unpruned and pruned), each treatment was repeated three times. The parameters measured were stem diameter, number of leaves, number of fruits per plant, number of fruit per plot, and fruit weight per plot,. The data were analyzed statistically by of variance followed by Duncan's Multiple Range Test (DMRT). The results showed that there was no interaction effect at treatment doses of compost litter and pruning. Dosage of compost litter of 50 kg N / ha can increase the growth of girth, number of leaves, and the number of fruit per plot. Litter compost fertilizer dose of 100 kg N / ha can promote the growth and production of red okra. Pruning treatment can increase the production of red okra. Keywords : red okra, compost, leaf, pruning.
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Andres, Ryan J., Daryl T. Bowman, Don C. Jones, and Vasu Kuraparthy. "Major Leaf Shapes of Cotton: Genetics and Agronomic Effects in Crop Production." Journal of Cotton Science 20, no. 4 (2016): 330–40. http://dx.doi.org/10.56454/mnrs4737.
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There exist four major leaf shape alleles in tetraploid cotton: normal, sub-okra/Sea-Island, okra, and super-okra. This allelic series has long served as a model genetic locus both in cotton and the broader leaf development research community. Over the years, numerous studies have attributed various production advantages to specific leaf shapes. The objective of this study was to provide a comprehensive review of this literature in order to provide a definitive report on the true benefits of these leaf shapes. In addition, a history of the genetic dissection of the major leaf shape locus was compiled. Leaf shape was found to have consistent effects on boll rot resistance, earliness, flowering rate, chemical spray penetration, lint trash, and yield. Reported effects on various insect resistances, photosynthetic rate, water use efficiency, and fiber quality were not consistent across studies. An ideal cotton cultivar would produce normal leaves up until the point canopy closure is obtained and then it would switch over to an open canopy of okra or super okra. Major leaf shapes of Upland cotton are a multiple allelic series of a single incompletely dominant genetic locus L-D1 on chromosome 15-D1 (Chr15). Genetic analysis studies have precisely mapped the major effect leaf shape genes in cotton and deciphered the causal nucleotide and gene expression changes leading to leaf shape phenotypic diversity in cotton. Recent advances in understanding the molecular processes underlying leaf shape phenotypic changes could help open new avenues for developing cotton cultivars with ideal leaf shape and could enhance sustainable and profitable cotton production.
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Manik, Auhge Eva Sari, Maya Melati, Ani Kurniawati, and Dan Didah Nur Faridah. "Hasil dan Kualitas Okra (Abelmoschus esculentus L. Moench.) Merah dan Okra Hijau dengan Jenis Pupuk yang Berbeda." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 47, no. 1 (April 30, 2019): 68–75. http://dx.doi.org/10.24831/jai.v47i1.22295.
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Okra fruit contains phenolic compounds as natural antioxidant. The aim of this research was to analyze the effect of different types of fertilizers on production and quality of two okra varieties. The experiment was conducted in October 2017 to February 2018 at Bogor Agricultural University experimental field at Leuwikopo, Darmaga, Bogor (-6033’49.3”SL, 106043’30.7’’EL). The experiment used nested randomized complete block design with 2 factors and 4 replications. The first factor consisted of two okra varieties with different colour (red and green okra). The second factor was fertilizer types consisted of no fertilizer, organic (cow manure), combination of organic + inorganic, and inorganic fertilizer. The results showed that fertilizer types significantly affected plant height and fruit N content but did not affect fruit production. Red okra had a higher plant height, lower number of leaves and leaf K content than those of the green okra. The interaction effect of both factors was significant on total phenolic content in fruit and P content in leaf. The highest total phenolic content in fruit was showed by red okra with inorganic fertilizer, although it was not significantly different to those of red okra with combination organic + inorganic fertilizer, and also to green okra with organic fertilizer. The highest P content in leaf was found in red okra without fertilizer, however it was not significantly different to red okra with combination organic + inorganic fertilizer, green okra with organic fertilizer, and green okra with inorganic fertilizer.Keywords: inorganic fertilizer, leaf nutrient, organic fertilizer, phenolic compound
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Novianto, Roni, and Sri Hartatik. "PENGARUH PEMBERIAN CENDAWAN MIKORIZA ARBUSCULAR (CMA) DAN DOSIS PUPUK P TERHADAP PERTUMBUHAN DAN PRODUKSI OKRA (Abelmoschus esculentus L)." Jurnal Bioindustri 3, no. 2 (May 30, 2021): 601–12. http://dx.doi.org/10.31326/jbio.v3i2.839.
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Okra is a vegetable crop that has a high selling value and the production of okra is more exported than sold domestically. The demand for okra from year to year continues to increase from various countries, especially Japan, which imports the most okra from Indonesia. Fertilization of phosphorus (P) fertilizer to fulfill nutrients and provision of arbuscular mycorrhizal fungi (CMA) for more efficient and maximum absorption by plants. Phosphorus (P) fertilizer can increase the production and quality of okra. The aim of this study was to determine the combination of treatment of arbuscular mycorrhizal fungi and which dosage of P fertilizer was best to increase the yield of okra production. The design used was a completely randomized design (CRD) with factorial treatment consisting of two factors. The first factor is the dose of arbucular mycorrhizal fungi (CMA) consisting of 4 levels, namely (0; 160; 320; 480) and the second factor is the dose of P fertilizer (75; 100; 125; 150). Parameters observed were plant height, number of leaves per plant, volume of roots, number of fruits per plant, weight of fresh fruit per plant and weight of plant dry corpse. Based on the analysis of variance, it showed that the interaction was significantly different on the variables of root volume, plant height, number of fruits and fruit weight. Based on research, the CMA dose of 320 kg / ha and the dose of 125 kg / ha gave the highest production results.
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Marsh, Lurline. "FRUITING CHARACTERISTICS OF OKRA." HortScience 27, no. 11 (November 1992): 1172f—1172. http://dx.doi.org/10.21273/hortsci.27.11.1172f.
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Thirty-seven okra (Abelmoschus esculentus) plant introductions and 3 cultivars, `Clemson Spineless', `Clemson Spineless 80', and `Candelabra Branching' were evaluated for their fruiting characteristics during a three year field study. Harvesting at 3 to 4 day intervals produced inmature fruits which were approximately 4 to 7 days old. These immature fruits when graded according to fruit length, were primarily very small (<4.4 cm) or small (4.4-8.9 cm). There were few medium (>8.9 cm but <12.7) or large (>12.7 cm) fruits. Of the 40 genotypes, Clemson Spineless averaged 46 pods per plant over 17 harvests. Few other plant introductions were comparable in the number of pods produced. Except for one, all other genotypes produced predominantly green fruits. Many of the genotypes were early maturing.
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Sharma, Aasma, Khem Raj Neupane, Rajendra Regmi, and Ram Chandra Neupane. "Effect of intercropping on the incidence of Jassid (Amrasca biguttula biguttula Ish.) and Whitefly (Bemesia tabaci Guen.) in Okra (Abelmoschus esculentus L. Moench)." Journal of Agriculture and Natural Resources 1, no. 1 (December 9, 2018): 179–88. http://dx.doi.org/10.3126/janr.v1i1.22233.
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Okra is one of the most important summer vegetables in South Asian countries including Nepal. However, the damage by insects like Jassid (Amrasca biguttula Ish.) and whitefly (Bemisia tabaci Guen) has resulted in significant reduction of its production. An experiment was conducted based on intercropping taking okra (Abelmoschus exculentus L. Moench) as the main crop in Arghau, Lekhnath-27, Kaski, Nepal from March 4 to May 24, 2018. The intercrops used were coriander (Corriander sativum), carrot (Daucas carota), fennel (Foeniculum vulgare) and parsley (Petroselinum crispum). The population of jassid and whitefly was recorded from three leaves representing the different strata (bottom, middle and top) of the vegetative parts; and related yield parameters were also observed to correlate with the level of population incidence of these pests. Least numbers of jassids (5.50±0.29, 6.94±0.43, 8.00±0.41 and 3.69±0.76) were observed respectively at 30, 40, 50 and 60 days after sowing (DAS) in okra+ coriander. Likewise, okra + coriander intercropping was effective in inhibiting the population of whitefly (7.50±0.59, 8.56±0.19, 10.25±0.66 and 7.06±0.42) at 30, 40, 50 and 60 days after sowing (DAS) respectively. In contrary, the highest number of jassids and whiteflies were observed in okra + parsley and control (okra only). Both pod length (cm) and yield (t/ha) were the highest (17.92±0.57 and 28.20±0.49 respectively) in okra + coriander and were the lowest (16.42±0.21 and 27.58±0.39 respectively) in okra + carrot. The benefit-cost ratio was in order okra + coriander > okra + carrot > okra + fennel > okra + parsley > control (okra only). Among the different intercrop combinations, the okra + coriander was found most effective that could be suggested as one of the alternative strategies to limit the population of pests; jassid and whitefly in okra.
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Asare, Aaron Tettey, Francis Mensah, Samuel Acheampong, Elvis Asare-Bediako, and Jonathan Armah. "Effects of Gamma Irradiation on Agromorphological Characteristics of Okra (Abelmoschus esculentus L. Moench.)." Advances in Agriculture 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/2385106.
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Cultivation of okra in Ghana is challenged by low yield due to lack of improved varieties. Gamma irradiated okra seeds can generate genetic variability to improve the crop. Samples of 150 seeds, each of okra genotype, UCCC6, were irradiated with 400 Gy to 1000 Gy using cobalt 60 source at a dose rate exposure of 121.58 Gy/hr. There were 40 stands comprising single plant per stand in three replications per treatment in a randomized complete block design outlay. Seedling survival, plant height, number of leaves, stem diameter, number of branches, leaf length and width, days to 50% flowering, number of fruits, length and weight of fruit, number of seeds, and 100-seed weight decreased significantly (P≤0.05) with increasing doses of gamma rays. Seedling survival was highest (88%) at 400 Gy, followed by control (81%). However, 600 Gy, 800 Gy, and 1000 Gy had 61%, 41%, and 17% seedling survival, respectively, with LD50 at 720 Gy. Significant (P≤0.05) correlations existed between growth and yield components. Optimum growth and yield in okra were induced by 400 Gy but the higher doses had growth retardation effects and the induced variability can be assessed at M2 generation.
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Degri, M. M., and I. B. Richard. "Impact of Intercropping Sorghum and Okra on the Incidence of Flea Beetles of Okra Podagrica spp in Dalwa, Maiduguri Semi-Arid Zone of Nigeria." International Letters of Natural Sciences 14 (April 2014): 51–58. http://dx.doi.org/10.18052/www.scipress.com/ilns.14.51.
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Field experiments were conducted at faculty of Agriculture teaching and research farm, university of Maiduguri in 2010 and 2011 rainy seasons. The aim was to investigate the impact of intercropping sorghum with okra on the incidence of flea beetle of okra (Podagrica spp) in the semi-Arid zone of Nigeria. The results showed that sole crop okra suffered flea beetle attack which affected its growth, fruit formation, fruit weights and fruit yield. Intercropping okra with sorghum significantly reduced the flea beetle populations, leaf damage caused by Podagrica spp (Coleoptera: Chrysomelidae). While increasing number of leaves for photosynthetic activities, plant height, fruit formation, fresh fruit weight and total fruit yield. The study concluded that okra intercropping at 1:1, 1:2 and 2:2 are the most efficient and productive intercrop systems in flea beetle management. Okra intercropping with cereal sorghum was found to be good for sustainable agriculture and organic farming in Nigeria due to its numerous advantages, particularly with respect to insect pests’ control.
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Degri, M. M., and I. B. Richard. "Impact of Intercropping Sorghum and Okra on the Incidence of Flea Beetles of Okra <i>Podagrica</i> spp in Dalwa, Maiduguri Semi-Arid Zone of Nigeria." International Letters of Natural Sciences 14 (April 29, 2014): 51–58. http://dx.doi.org/10.56431/p-9nkk6a.
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Field experiments were conducted at faculty of Agriculture teaching and research farm, university of Maiduguri in 2010 and 2011 rainy seasons. The aim was to investigate the impact of intercropping sorghum with okra on the incidence of flea beetle of okra (Podagrica spp) in the semi-Arid zone of Nigeria. The results showed that sole crop okra suffered flea beetle attack which affected its growth, fruit formation, fruit weights and fruit yield. Intercropping okra with sorghum significantly reduced the flea beetle populations, leaf damage caused by Podagrica spp (Coleoptera: Chrysomelidae). While increasing number of leaves for photosynthetic activities, plant height, fruit formation, fresh fruit weight and total fruit yield. The study concluded that okra intercropping at 1:1, 1:2 and 2:2 are the most efficient and productive intercrop systems in flea beetle management. Okra intercropping with cereal sorghum was found to be good for sustainable agriculture and organic farming in Nigeria due to its numerous advantages, particularly with respect to insect pests’ control.
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Pasupathi, E., M. Murugan, C. Chinniah, J. Ramalingam, G. Karthikeyan, and S. Harish. "Effect of okra plant resistance on transmission rate of okra enation leaf curl virus by its vector whitefly, Bemisia tabaci." Journal of Applied and Natural Science 13, SI (July 19, 2021): 63–68. http://dx.doi.org/10.31018/jans.v13isi.2778.
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The present study aimed to investigate the effect of age of the okra plants that showed varying whitefly resistance responses on the transmission rate of okra enation leaf curl virus (OELCV) by its vector whitefly Bemisia tabaci. The OELCV infected whitefly adults were collected from whitefly colonies and were challenged on the test okra accessions (Upl mona 2, Co 1, Arka anamika and AE 64) of differential ages which were individually caged (7, 10 and 15 d after germination) with glass chimney and the number of such whiteflies used were at the rate of 2, 4, 6, 8, 10, 12, 14 and 20 adults per plant. Observations were made on the virus symptom expression 30 d after challenge. The efficiency of transmission was determined. The efficiency of transmission of OELCV was the highest (maximum T and P*, 0.80, 1.00 and 0.08, 0.10) when 7 d old seedlings were inoculated (Arka anamika and AE 64 respectively) and transmission had decreased as the age of seedlings increased. The estimated transmission rate for single whitefly (P*) increased with an increase in the number of whiteflies used per plant. Okra plant resistance to B. tabaci significantly changed the transmission rates of OELCV on okra. Understanding the resistance mechanisms of the okra accessions and interactions between plant viruses and their insect host can pave the way for novel approaches to protect plants from virus infection.
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Sibeko Nomkhosi B, Mzwandile Mabuza, and Tamado Tana. "Effects of osmo-priming on germination, growth and green pod yield of okra [Abelmoschus esculentus (L.) Moench] at Luyengo, Middleveld of Eswatini." World Journal of Advanced Research and Reviews 11, no. 1 (July 30, 2021): 029–38. http://dx.doi.org/10.30574/wjarr.2021.11.1.0248.
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Okra is a nutritious summer vegetable crop in Eswatini. However, it has slow and uneven germination. Seed pre-sowing treatment through osmo-priming can enhance the germination, growth and yield of okra. Thus, laboratory and field experiments were conducted at Luyengo, Middleveld of Eswatini in 2019/2020 cropping season to determine the effect of osmo-priming on germination, growth and yield of okra. Treatments included priming of seeds with Polyethylene glycol (PEG) concentration of 5%, 10%, 15%, and 20% and unprimed control. Completely randomized design was used for the laboratory experiment and randomized complete block design was used for the field experiment. Results showed significant (p<0.01) effect of seed priming on the germination index, mean germination time and final germination percentage of okra seeds. Significantly the highest germination index (5.2) and final germination percentage (66) were recorded in priming with 15% PEG. Similarly, seeds priming with 15% PEG resulted in significantly the highest number of leaves per plant (12.07), leaf area index (1.49), canopy height (120.9 cm), and number of branches per plant (8.13). Moreover, okra seeds primed in 15% PEG resulted in the highest pod length and total green pod yield (2009.8 kg ha-1). Thus, it can be concluded that seed priming with 15% PEG is the most effective in improving the germination, growth and yield of okra in the study area.
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Wu, Yaying, Brian A. Kahn, Niels O. Maness, John B. Solie, Richard W. Whitney, and Kenneth E. Conway. "Densely Planted Okra for Destructive Harvest: II. Effects on Plant Architecture." HortScience 38, no. 7 (December 2003): 1365–69. http://dx.doi.org/10.21273/hortsci.38.7.1365.
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Research was conducted to develop a cultural system that would permit a destructive mechanical okra [Abelmoschus esculentus (L.) Moench] harvest. This paper reports on studies to determine the responses of okra plant architecture to various highly dense (HD) plant populations, and to consider the implications of those responses for destructive mechanical harvest. Growing okra in plant arrangements more densely planted than the control (which was spaced at 90 × 23 cm) did not affect overall plant heights. The position of the first bloom or fruit attachment and of the first marketable fruit attachment tended to become higher on the stem as plant population density increased, especially when comparing plants from the 15 × 15 cm spacing to control plants. The number of marketable fruit per plant was usually unaffected by plant population. Branch number and defruited dry weight per plant decreased as plant population density increased. Plant architecture did not affect the ability of an experimental mechanical harvester to recover marketable fruit from three different okra cultivars grown in a HD arrangement. The lack of concentrated marketable fruit set, rather than plant architecture, was the main limiting factor to the success of densely planted okra for destructive harvest.
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Danso, Y., and B. Abugri. "Plant Parasitic Nematodes Associated with Okra in the Forest Savanna Transition and Semi-Deciduous Forest Agro-Ecologies of Ghana." Agricultural and Food Science Journal of Ghana 14, no. 1 (June 13, 2022): 1483–92. http://dx.doi.org/10.4314/afsjg.v14i1.12.
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Okra is an important vegetable crop in Ghana. Plant-parasitic nematodes infect okra, reducing the quality and quantity of fresh immature and dry fruits. This study was carried out to determine diversity, density and distribution of plant parasitic nematodes attacking okra in the Forest savanna transition and Semi-deciduous forest agro-ecologies of Ghana. In each agro-ecology, soils from okra rhizosphere were sampled from 15 farms for plant-parasitic nematodes assessment. Nematodes were extracted using the modified Baermann nematodes extraction method. Six nematode genera were identified; Meloidogyne, Pratylenchus, Xiphinema, Helicotylenchus, Rotylenchulus and Scutellonema. Meloidogyne occurred with 64.9% relative abundance and 100% frequency. Rotylenchulus, Pratylenchus, and Helicotylencus nematodes also occurred with 100% frequency. Xiphinema were the least abundant (0.05%) and the least frequent (15%). The findings have shown that a large number of nematodes exist on okra plants and therefore there is the need for educational campaigns to be stepped up by Agricultural Extension Services of the Ministry of Food and Agriculture on plant parasitic nematode infections in okra production.
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,, Sulassih, Joko Mulyono, Muhamad Syukur, Sofyan Zaman, Muharama Yora, and Abdul Hakim. "Keragaman Stomata Okra (Abelmoschus esculentus L. (Moench)." Comm. Horticulturae Journal 2, no. 2 (December 13, 2018): 41. http://dx.doi.org/10.29244/chj.2.2.41-45.
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Okra (Abelmoschus esculentus L. (Moench.) is high nutrition compound potential for diabetes and Alzheimer. Yield is one of the characters have to improve in plant breeding program through stomata characterization. The variability for 14 genotypes showed significantly for stomatal length, stomatal width, epidermal cell number, chloroplast number, stomatal number, stomatal index and stomatal density. Stomatal density for P2 was 256.80 mm2 that was nonsignificant with Zahira (265.31 mm2) and Naila (204.08 mm2). Genotypes P2, Zahira and Naila showed low stomatal density that mean efficiency for water management in leaves. The high stomatal index causing high photosynthesis and high yield. Stomatal index were high for genotypes P1 (40.31) and P2 (35.69). Naila has low stomatal index but Zahira as significant as genotype P2. Zahira could be high yield genotype candidate.Keyword : candidate, density, index, genotype
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Unagwu, Benedict O., Roseline U. Ayogu, and Vivian O. Osadebe. "Soil Chemical Properties and Yield Response of Okra (Abelmoschus Esculentus L) to Different Organic Fertilizer Sources." Journal of Agricultural Extension 25, no. 2 (May 4, 2021): 66–74. http://dx.doi.org/10.4314/jae.v25i2.6.
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The study investigated the effects of animal manures (cow manure, CoM; chicken droppings, CkD; and pig manure, PiM) applied at 15 t ha-1 equivalent rate on the soil and growth performance of okra grown in a degraded ultisol. The treatments (CoM; CoM; PiM and Control unamended) were laid out in a completely randomized design and replicated three times. Animal manure application had significant effects on soil properties. Soilorganic matter increased by over 9% in the amended treatment relative to the control treatment. Except for N, increases in P (circa 14-70%)and K (circa 15-46%) nutrients were higher for CkD treatment than in other treatments. Generally, the amended treatments maintained a significantly higher (p ≤0.05) plant leave number, stem girth, plant height, okra pod length and yields when compared with the Control treatment. The results indicated that application of animal manure enhanced okra growth performance. The findings suggest that animal manure application can potentially increase okra yield when grown in a degraded soil. It is recommended that farmers use ample (15 t ha-1) ) quantity of animal manures to increase their crop yields, which invariably will enhance their income.
Keywords: Soil fertility, organic fertilizers okra growth, okra yield response, farmers okra yeild.
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Jha, Ritesh Kumar, Ram Babu Neupane, Abishkar Khatiwada, Shailesh Pandit, and Bhishma Raj Dahal. "Effect of different spacing and mulching on growth and yield of Okra (Abelmoschus esculentus L.) in Chitwan, Nepal." Journal of Agriculture and Natural Resources 1, no. 1 (December 9, 2018): 168–78. http://dx.doi.org/10.3126/janr.v1i1.22232.
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Okra (Abelmoschus esculentus L.) is one of the most important vegetable crop of Nepal. Its yield and growth parameters are affected by different cultural practices. This study was conducted at Olericulture Farm of Agriculture and Forestry University, Rampur, Chitwan, Nepal during April 29 to July 9 of 2018. The field experiment was carried out in split plot design using three replications. The treatments consisted of three intra row spacing (30, 45 and 60 cm) and four different mulching materials (Silver plastic, Panicum repens, Lantana camara and bare soil). The objective of this experiment was to assess the effects of various intra-row spacings and mulching materials on growth and yield of okra. The effect of mulching materials on okra yield was found significant. The okra yield was highest (8104 kg/ha) under silver plastic mulch followed by control (5161kg/ha), Panicum repens (3901kg/ha) and Lantana camera (3701kg/ha), respectively. Silver plastic mulch enhanced the growth parameters like canopy length, plant height, leaf number, leaf length, girth and yield of okra. The spacings provided non significant effect on okra yield, however the yield of okra was highest (7295 kg/ha) under 30×30 cm spacing followed by 45×30 cm (4660 kg/ha) and 60 cm × 30 cm spacing (3703 kg/ha), respectively. Combination of silver plastic mulch along with 30 cm × 30 cm spacing provided the highest okra yield. This study suggests that farmers of the Chitwan should grow okra at spacing of 30 cm × 30 cm and under silver plastic mulch to produce higher yield.
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Goldblatt, Peter, and Laurence J. Dorr. "Chromosome Number in Sarcolaenaceae." Annals of the Missouri Botanical Garden 73, no. 4 (1986): 828. http://dx.doi.org/10.2307/2399211.
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Roberto, Cremonini. "Low chromosome number angiosperms." Caryologia 58, no. 4 (January 2005): 403–9. http://dx.doi.org/10.1080/00087114.2005.10589480.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS LXXXVII." TAXON 34, no. 2 (May 1985): 346–51. http://dx.doi.org/10.1002/j.1996-8175.1985.tb02505.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS LXXXVIII." TAXON 34, no. 3 (August 1985): 547–51. http://dx.doi.org/10.1002/j.1996-8175.1985.tb03698.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCII." TAXON 35, no. 3 (August 1986): 610–13. http://dx.doi.org/10.1002/j.1996-8175.1986.tb00821.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCIII." TAXON 35, no. 4 (November 1986): 897–903. http://dx.doi.org/10.1002/j.1996-8175.1986.tb00852.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCI." TAXON 35, no. 2 (May 1986): 404–10. http://dx.doi.org/10.1002/j.1996-8175.1986.tb02549.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCVI." TAXON 36, no. 3 (August 1987): 659–61. http://dx.doi.org/10.1002/j.1996-8175.1987.tb00875.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCVII." TAXON 36, no. 4 (November 1987): 766–67. http://dx.doi.org/10.1002/j.1996-8175.1987.tb00894.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCVIII." TAXON 37, no. 1 (February 1988): 194–96. http://dx.doi.org/10.1002/j.1996-8175.1988.tb00928.x.
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Löve, Áskell. "CHROMOSOME NUMBER REPORTS XCIX." TAXON 37, no. 2 (May 1988): 396–99. http://dx.doi.org/10.1002/j.1996-8175.1988.tb00950.x.
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Miah, Raju, Nusrat Jahan Methela, and Roksana Aftab Ruhi. "EFFECT OF INTEGRATED NUTRIENT MANAGEMENTON GROWTH AND YIELD OF OKRA." Tropical Agrobiodiversity 1, no. 2 (June 18, 2020): 72–76. http://dx.doi.org/10.26480/trab.02.2020.72.76.
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This study was carried out at Subarna Agro-Based Initiative’s (SABI) field, Noakhali, Bangladesh during the period of Rabi Season, 2018. The objectives of this study were to evaluate the growth and yield performances of okra in different types of organic fertilizers and to identify the possible fertilizer treatment which enhances both growth and yield of okra [Abelmoschus esculentus (L.) Monech] .BARI Okra-1 was taken for the study. A Randomized Complete Block Design (RCBD) was used and there were 4 treatments namely; Farm Yard Manure (T1), Vermi-Compost (T2), FYM + Vermi-Compost (T3) and Integrated Nutrient Management (T4) were replicated three times. Plant height (cm), number of leaves, total flower, total number of fruits, fruit length (cm) and fruit weight (g) data were taken as parameters on the growth and yield of the plant. Though fruit weight was observed higher for the effect of T3 (72.78 g) but in case of Integrated Nutrient Management (T4) the other characters such as plant height, number of leaves, total flowers, total number of fruits, fruit length were observed higher. The T4 showed a comparatively better result of growth and yield than other treatments. This study clearly indicated that Integrated Nutrient Management which contains the micronutrients with minimum inorganic and organic manure may be a potential source for better growth and high yield in okra.
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Rana, Masud, Md Morshedul Islam, and Md Atiqur Rahman Bhuiyan. "Effectiveness of integrated nutrient management on growth and yield parameters of okra (Abelmoschus esculentus L.)." Asian-Australasian Journal of Food Safety and Security 4, no. 2 (November 30, 2020): 41–48. http://dx.doi.org/10.3329/aajfss.v4i2.53879.
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Integrated use of organic and inorganic fertilizers could improve both growth and yield of okra plant. The present study was carried out to evaluate the effect of organic and inorganic fertilizer on growth and yield parameters of okra (Abelmoschus esculentus L.) at experimental area of Noakhali Science and Technology University, Bangladesh during the period of 18th December, 2018 to 19th March, 2019 (Rabi season). In this experiment, “Arka Anamika” variety of okra was used. The experiment was laid out in Randomized Complete Block Design (RCBD) with four treatments viz. T1= INM (organic and inorganic), T2= Inorganic (NPK), T3= Organic (cowdung), T4= Control and three replications. Data were taken on the growth and yield parameters such as plant height (cm), number of leaves per plant, number of branches per plant, days to first flowering (days), number of fruit per plant, individual fruit weight (gm), fruit length (cm) and fruit diameter (cm). Among all treatments INM (organic and inorganic) was responsible for highest plant height (49.96 cm), maximum number of leaves per plant (22.33) and branches per plant (6.33), accelerated days to first flowering (39 days), increases the number of fruit per plant (14.33), individual fruit weight (24.89 gm), fruit length (15.5 cm) and fruit diameter (1.98 cm). So this study clearly indicated that, among all treatments INM (Organic and inorganic) performed the best and it will be suitable for okra production.
Asian Australas. J. Food Saf. Secur. 2020, 4 (2), 41-48
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Akramuzzaman, M., MM Uddin, and KS Islam. "Biorational management of okra jassid (Amrasca devastans)." Progressive Agriculture 29, no. 3 (September 27, 2018): 205–12. http://dx.doi.org/10.3329/pa.v29i3.40005.
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An experiment was carried out to appraise the comparative efficacy of some biorationals against okra jassid at the Field Laboratory, Department of Entomology, Bangladesh Agricultural University, Mymensingh during January to June 2016. The experiment was accomplished using three botanical oils (Neem oil@ 2ml/L, Mahogany oil @2ml/L & Karanja oil @2ml/L) and four microbial insecticides (Spinosad @ 1ml/ L, Beauveria bassiana @ 1 g/ L, Buprofezin @ 2ml/L, Emamectin benzoate @ 1g/L) along with control. Among various biorationals the mean number of nymph plant-1 varied significantly (p<0.01, p<0.05) after 1st, 2nd and 3rd spray. After 1st and 2nd spray, Beauveria showed the best results both at 3 DAT (0.00 & 2.33, respectively) while after 3rd spray Mahogany (0.00) performed best at 3 DAT compared to other treatments including control (4.00). In number of adult plant-1 effectiveness was reflected on Neem (0.66) among various biorationals at 3 DAT after 2nd spray. Similarly, at 5 and 7 DAT, the lowest number of adult was observed at Emamectin (1.66, 1.00), respectively. It revealed that Neem and Emamectin had strong efficacy in controlling okra jassid in comparison to their control (7.33, 11.33), respectively. After 3rd spray, the efficacy of different bioratioanls in managing okra jassid was significant (p<0.01). The Buprofezin showed the best performance both at 3 and 5 DAT (0.66 & 1.66, respectively). Similarly, the number of curled leaf plant-1 varied significantly (p<0.05, p<0.01) after both 1st 2nd and 3rd spray than the control. The lowest number of curled leaf plant-1 was observed in Neem (0.66) treated plants at 3 DAT after 2nd spray. This data revealed that the Neem had strong effect on okra jassid management. The number of curled leaf plot-1 also varied significantly (p<0.01) after 2nd and 3rd spray than the control. The highest infestation was always found in control treatment. The results indicated that Beauveria bassiana had strong efficacy in controlling okra jassid followed by Neem oil, Buprofezin and Emamectin benzoate in comparison to control. Therefore, it might be concluded that these biorational insecticides could be used as eco-friendly management strategy for okra jassid and can be incorporated in developing IPM programme for jassid.
Progressive Agriculture 29 (3): 205-212, 2018
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OLA, ARJUN LAL. "Evaluation of okra [Abelmoschus esculentus (L.) Moench] hybrids for growth, yield attributes and yield." Annals of Plant and Soil Research 23, no. 4 (November 1, 2021): 437–40. http://dx.doi.org/10.47815/apsr.2021.10098.
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The present experiment was carried out at RLBCAU, Jhansi with okra hybrids during summer season of 2020 to evaluate the performance of okra hybrids for growth and yield. Fourteen okra hybrids were evaluated in randomized block design with three replications. The results revealed that 50 % seed germination was observed in hybrid NS-7772. The highest plant height (133.7cm) was recorded in hybrid Somaya, while, highest number of nodes per plant (27.4) was observed in NOH-05. The minimum length of node (3.27cm) was noticed in SW 001.The maximum number of primary branches per plant (3.73) was noticed in hybrid NOH-1053. On the basis of yield attributes, the maximum pod length (12.4 cm), 10 pod weight (160.7g), yield per plant (461.2g) and yield (17.08 t ha-1) were observed in hybrid NS 7772.
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Alege, Gbenga Olorunshola, Otori Oyiza Mercy, Umar Haruna, Ilepinran Jibril Oni, and Dauda Danlami. "Comparative Assessment of Selected Fruit Peels on Growth and Yield of Okra (Abelmoschus esculentus (L.) Moench)." Journal of Biochemistry, Microbiology and Biotechnology 10, no. 1 (July 31, 2022): 67–71. http://dx.doi.org/10.54987/jobimb.v10i1.713.
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This study was carried out to examine the effect of selected fruit peels on growth and yield of okra (Abelmoschus esculentus). 10g of ground fruit peels of banana, watermelon, pawpaw, pineapple, plantain, orange was applied to 7 kg of soil and left for 7 days before planting of okra seed. NPK (15:15:15) serves as positive control while groups without fertilizer served as negative control for the study. Each treatment was replicated five times in polythene bags used as pots and watered every three days. The setup was arranged in Completely Randomized Block Design (CRBD). Plant height and stem girth were measured while number of leaves were also counted from 1 to 8 Week After Planting. The numbers of days to 50% flowering, pod length and pod diameter were also recorded from 1 to 8 Week After Planting. Data pooled in this study were subjected to Analysis of variance (ANOVA) and means with statistically significant difference at p<0.05 were separated using Duncan Multiple Range Test. Generally, results across weeks showed statistically significant difference for plant height, number of leaves, stem girth, days to 50% flowering, number of fruit and pod length while only the diameters of fruits did not respond to different nutrient sources. Okra grown with banana and watermelon peels gave the best overall performance which indicates that they contained sufficient nutrients for optimum production of okra. This study clearly indicates that banana and watermelon fruit peels could be used singly or in combination to effectively boost yield of okra.
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Alake, C. O. "Variation and Heritability of Sixteen Characters in West African Okra, Abelmoschus Caillei (A. Chev.) Stevels." Plant Breeding and Seed Science 66, no. 1 (August 8, 2014): 51–62. http://dx.doi.org/10.2478/v10129-011-0057-3.
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Abstract Genotypic and phenotypic variances, genotypic and phenotypic coefficients of variation, heritability and genetic advance were estimated for 16 agronomical characters in West African okra for two seasons, using 25 West African okra lines of diverse origin. Considerable differences were observed for some characters in the two seasons. Number of days to flowering, number of leaves at flowering, plant height at flowering and number of pods at branches showed seasonal differences. The estimates of genotypic coefficients of variation (gcv) in the two seasons were close in many cases. The gcv values ranged from 1.41 for number of days to flowering in the early season to 68.63 for number of branches per plant in the late season planting. Heritability estimates ranged from 5.02% for number of leaves at flowering in the early season to 99.54% for weight of matured pod during the early season. This study highlighted the significance of genotype-environment interaction in the breeding programmes of West African okra. The relatively large genotypic coefficient of variation, heritability estimates and genetic advance for number of pods at stem, number of pods per plant, number of branches per plant, weight of matured pods and seed yield per plant, were indicative of likely effectiveness of selection for such characters.
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Leite, Germano Leão Demolin, Marcelo Picanço, Gulab Newandram Jham, and Márcio Dionízio Moreira. "Whitefly population dynamics in okra plantations." Pesquisa Agropecuária Brasileira 40, no. 1 (January 2005): 19–25. http://dx.doi.org/10.1590/s0100-204x2005000100003.
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The control of whitefly Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae) on okra (Abelmoschus esculentus L.) consists primarily in the use of insecticides, due to the lack of information on other mortality factors. The objective of this study was to evaluate the spatial and temporal population dynamics of the whitefly B. tabaci biotype B on two successive A. esculentus var. "Santa Cruz" plantations. Leaf chemical composition, leaf nitrogen and potassium contents, trichome density, canopy height, plant age, predators, parasitoids, total rainfall and median temperature were evaluated and their relationships with whitefly on okra were determined. Monthly number estimates of whitefly adults, nymphs (visual inspection) and eggs (magnifying lens) occurred on bottom, middle and apical parts of 30 plants/plantation (one leaf/plant). Plants senescence and natural enemies, mainly Encarsia sp., Chrysoperla spp. and Coccinellidae, were some of the factors that most contributed to whitefly reduction. The second okra plantation, 50 m apart from the first, was strongly attacked by whitefly, probably because of the insect migration from the first to the second plantation. No significant effects of the plant canopy on whitefly eggs and adults distribution were found. A higher number of whitefly nymphs was found on the medium part than on the bottom part.
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Mehta, Nandan, BS Asati, and SR Mamidwar. "Heterosis and gene action in okra." Bangladesh Journal of Agricultural Research 32, no. 3 (January 8, 2008): 421–32. http://dx.doi.org/10.3329/bjar.v32i3.544.
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Forty two hybrids generated by crossing three testers with fourteen lines were studied along with parents for studying heterosis and gene action for days to first flowering, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit, 100-seed weight and fruit yield per plant during rainy season and summer season of 2002-03 at Department of Horticulture, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India. The most heterotic combinations were VRO-6 x Parbhani Kranti, VRO-4 x Parbhani Kranti, Daftari-1 x Arka Abhaya and Kaveri Selection x Ankur Abhaya for fruit yield per ptant. The sca variances for days to fruit flower, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit and 100-seed weight were higher than so gca variance so there is a preponderance of non-additive gene action. The gca variances was greater than sca variances for fruit yield per plant indicating preponderance of additive gene action for this trait. Overall, the results discussed above are quite indicative of the fact that hybrid okra has great potentialities of maximizing fruit yield in Chhattisgarh plains.DOI: http://dx.doi.org/10.3329/bjar.v32i3.544Bangladesh J. Agril. Res. 32(3) : 421-432, September 2007
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El-Hak, Seif H. Gad, H. Mahmoud Saved, Mohamed A. Abobakr, and Ragab M. Aiv. "276 INHERITANCE OF SOME CHARACTERS IN OKRA." HortScience 29, no. 5 (May 1994): 469e—469. http://dx.doi.org/10.21273/hortsci.29.5.469e.
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Inheritance of plant height, leaf lobing index, internode length, and number of fruits per plant was studied. Four crosses (Pusa Swani × White Velvet and its reciprocal; Pusa Swani × Emerald: White Velvet × Emerald) were used in this investigation. The parents, F1. F2. and the first backcrosses populations were grown. The inheritance of all the studied characters was found to be quantitative. The proper statistical methods were followed for the analysis of all recorded data. It could be generally concludes that the narrow sense heritability in plant height ranged from 37.18 to 59.13%. leaf lobing index ranged from 26.35 to 77.73%: internode length ranged from 50.06 to 56.52%. and number of fruits per plant varied from 23.22 to 44.26%.
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Khotimah, Husnul. "hk THE EFFECT OF DROUGHT STRESS ON THE GROWTH AND YIELD OF SEVERAL OKRA GENOTYPES (Abelmoschus esculentus L.)." CROP AGRO, Scientific Journal of Agronomy 12, no. 01 (January 30, 2019): 29. http://dx.doi.org/10.29303/caj.v12i01.253.
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ABSTRACT
Okra (Abelmoschus esculentus L.) is one of horticulture crop that contain high nutrition. Growth and yield of this crop determined by genetic and environment factor especially water. The objective of this research was to know the effect of drought stress toward growth and yield of several okra genetypes. This research was undertaken in plastic house, Batu Kuta village Sub regency of Narmada using Split Plot design with drought stress as main plot and genotype as sub plot. Main plot consist of drought stress and without drought stress. Sub plot consist of Dompu genotype, Hybrid genotype, Red genotype and Long genotype. Every treatment combination was replicated three times. Result of this study showed that interaction between treatment and genotype of okra effected on canopy wet weight, canopy dry weight, plant height at 60 days after planting, number of leaf at 30, 60 and 90 days after planting, number of flower becoming fruit and number of good fruit. Treatment of okra genotype effected on almost all parameters except wet weight of root, dry weight of root and diameter of stem 30 days after planting. While, treatment of drought stress only effected on canopy wet weight and plant height at 60 and 90 days after planting. Long genotype had the best growth on the condition of drought. Red genotype had the best number of good fruit on the condition of drought stress and without drought stress.
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Araújo, João Pedro D. de, Douglas M. Zeffa, Wilma Aparecida Spinosa, Mauricio U. Ventura, Lígia Erpen-Dalla Corte, Leandro SA Gonçalves, Gabriel Augusto B. da Silva, Juliano Tadeu V. de Resende, and Leonel Vinicius Constantino. "Evaluation of okra landraces based on agronomic and biochemical traits." Horticultura Brasileira 39, no. 2 (April 2021): 223–28. http://dx.doi.org/10.1590/s0102-0536-20210214.
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ABSTRACT Okra is consumed in several countries and is an important source of nutrients for human food. To promote okra production and consumption is essential the development of new cultivars with high nutritional levels, besides desirable agronomic traits. Thus, this study aimed to evaluate nine okra landraces by agronomic and biochemical traits. The accessions UEL2, UEL3, UEL5, UEL6, UEL7, UEL9, UEL10, UEL13 and UEL15 were grown in open field condition and evaluated in relation to fruit yield, fruit weight, fruit diameter, number of fruits per plant and plant height. The biochemical analysis included mineral composition, crude protein content, vitamin C content, total flavonoid and phenolic content and antioxidant activity. The UEL7 accession stood out for the high levels for biochemical traits such as content of some minerals, vitamin C and antioxidant activity. On the other hand, UEL3 accession had a low performance for biochemical traits, but stood out for agronomic traits such as fruit yield and number of fruits per plant. Hence, the UEL7 and UEL3 landraces may be introduced in breeding programs focused on human food and agronomic performance, beyond to contribute for okra germplasm conservation.
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Prom-in, Supattra, Jasadee Kaewsrichan, Nuntika Wangpradit, Chua Kien Hui, Mohamad Fairuz Yahaya, Yusof Kamisah, and Jaya Kumar. "Abelmoschus Esculentus (L.) Moench’s Peel Powder Improves High-Fat-Diet-Induced Cognitive Impairment in C57BL/6J Mice." International Journal of Environmental Research and Public Health 17, no. 15 (July 30, 2020): 5513. http://dx.doi.org/10.3390/ijerph17155513.
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Okra peel exhibits numerous therapeutic effects. This study explores the potential ameliorative effects of okra peel powder on high-fat-diet (HFD)-induced hypercholesterolemia and cognitive deficits. Thirty-six C57BL/6J male mice were randomly divided into six groups (n = 6 per group): (i) control, mice fed with a normal diet; (ii) HFD, mice fed with HFD; (iii) HFD-SIM, mice fed with HFD and given simvastatin (20 mg/kg/day); (iv) HFD-OP1; (v) HFD-OP2; (vi) HFD-OP3, mice fed with HFD and okra peel (200, 400, or 800 mg/kg/day, respectively). Following 10 weeks of treatments, the mice were subjected to the Morris water maze (MWM). Parameters such as weekly average body weight, food intake, and blood lipid profiles were also recorded. The HFD group showed a profound increase in total cholesterol and low-density lipoprotein concentration compared to the control group. All okra-treated and HFD-SIM groups performed better than the HFD group during acquisition trials, whereas only the HFD-OP1 produced a significantly higher number of entries into the platform zone during the probe trial. In sum, all three okra doses improved the learning ability of the mice. However, only the lowest dose of okra significantly improved the spatial reference memory retention.
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Ayub, Qasim, Shah Masaud Khan, Ijaz Hussain, Ali Raza Gurmani, Khalid Naveed, Abid Mehmood, Shujaat Ali, Touqeer Ahmad, Naveed ul Haq, and Ahmad Hussain. "Mitigating the adverse effects of NaCl salinity on pod yield and ionic attributes of okra plants by silicon and gibberellic acid application." Italus Hortus 28, no. 1 (May 13, 2021): 59. http://dx.doi.org/10.26353/j.itahort/2021.1.5973.
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The current study was undertaken to evaluate the responses of okra to salinity and to study the beneficial effects of silicon and gibberellic acid on yield and ionic attributes of okra under salinity stress. For this purpose, a pot experiment was conducted at the Horticultural Farm of the Department of Horticulture, The University of Haripur, Pakistan. Seeds of the okra cultivar ‘Sabz Pari’ were sown in pots. The experiment was established in a complete randomized design with factorial layout and included a total of 14 treatments deriving from the combination of two factors: two salinity levels and seven treatments with silicon or gibberellic acid. Okra seeds were pretreated with either 0, 50, 75 or 100 mg/L of gibberellic acid and then planted into pots. After germination plants were subjected to 0 mmol (control) or 50 mmol salinity; silicon (in the form of potassium silicate) was applied to plants exogenously at the rate of 2 mmol, 3 mmol, or 4 mmol. The following parameters were measured: number of days to flowering, pod length, pod weight, number of pods per plant and pod yield per plant, and the contents of Na+, Cl-, K+, and proline in the leaves. The results revealed that under 50 mmol NaCl salinity okra plants treated with 100 mg/L of GA3 had the shortest time to flowering (48.3 days) and the lowest Na+ ion content (14.9 mg/L) and Cl- ion content (9.8 mg/L), while in these plants we measured an increased pod weight (18.9 g), pod length (14.6 cm), number of pod per plant (22.6), pod yield per plant (1225 g), K+ ion and proline contents (18.9 mg/g and 28.8 μmol/g, respectively). Hence, this study allowed to conclude that the highest salinity level reduced the yield and altered the ionic status of okra plants, whereas GA3 and Si lowered the toxic effects of salinity and 100 mg/L GA3 along with 4 mmol silicon can be used in order to reduce salinity toxic effects
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Karar, Haider, Muhammad Amjad Bashir, Khalid Ali Khan, Hamed A. Ghramh, Sagheer Atta, Mohammad Javed Ansari, Zubair Ahmad, and Farmanur Rahman Khan. "The impact of adjacent habitats on population dynamics of red cotton bugs and lint quality." PLOS ONE 15, no. 12 (December 31, 2020): e0242787. http://dx.doi.org/10.1371/journal.pone.0242787.
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Red cotton bugs [Dysdercus spp. (Hemiptera: Pyrrhocoridae] are among the most destructive pests of cotton and many other crops. Red cotton bugs (RCBs hereafter) damage cotton plants by sucking sap and deteriorate lint by staining. The incidence of RCBs causes boll injury along the field margins neighboring with various peripheral areas. The adjacent habitat/crops strongly mediate the population dynamics of RCBs. However, limited is known about the impact of adjacent habitat on population dynamics of RCBs and lint quality. This two-year field study evaluated the impact of adjacent habitat (okra, unpaved road, water channel and Eucalyptus trees) on population dynamics of RCBs and lint quality of cotton. The RCBs were sampled weekly from margins to 4 meter inside the cotton field. The RCBs’ populations were monitored and plucked cotton bolls were examined for internal damage. The highest incidence of RCBs was recorded for cotton field adjacent to okra and water channel. Similarly, the highest number of damaged bolls were observed for the field side neighboring with okra and water channel. Furthermore, the highest number of unopened bolls were recorded for okra and water channel sides with higher percentage of yellowish lint. Field sides bordering with Eucalyptus trees and unpaved road had lower RCBs incidence and lint staining. Nonetheless, RCBs incidence was higher at field margins compared to field center indicating that population was strongly affected by adjacent habitat. It is concluded that sowing okra and weedy water channels adjacent to cotton would support RCBs population and subsequent lint staining. Therefore, water channels must be kept weed-free and okra should not be sown adjacent to cotton. Nonetheless, detailed studies are needed to compute monetary damages caused by cotton pests to the crop. Furthermore, effective management strategies must be developed to manage RCBs in cotton to avoid lint-staining problem.