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Journal articles on the topic 'Cowplea'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ogunkanmi, Adebayo, Oluwatoyin Ogundipe, Luky Omoigui, Adebola Odeseye, and Christian Fatokun. "Morphological and SSR marker characterization of wild and cultivated cowpeas (Vigna unguiculata L. Walp)." Journal of Agricultural Sciences, Belgrade 64, no. 4 (2019): 367–80. http://dx.doi.org/10.2298/jas1904367o.

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Three hundred and ninety accessions comprising 260 cultivated and 130 wild cowpea accessions were evaluated phenotypically using 27 cowpea descriptors. Morphological evaluation of some qualitative traits revealed 11.92% and 29.23% presence of pigmentation on the stem, 1.53% and 20.76% presence of stripes on the pod, and 0% and 20% presence of hairiness on the plant of cultivated and wild cowpeas respectively. As for the molecular analysis, sixteen SSR primers were employed for genotyping 48 accessions from both wild and cultivated cowpeas. The data generated a dendrogram with three clusters, t

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2

Rose, Judith L., and Brian A. Kahn. "USE OF COWPEA AS A GREEN MANURE TO REDUCE EXTERNAL NITROGEN INPUTS IN A FALL BROCCOLI CROP." HortScience 29, no. 7 (1994): 729d—729. http://dx.doi.org/10.21273/hortsci.29.7.729d.

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Cowpea [Vigna unguiculata (L.) Walp.] was grown as a green manure preceding a fall crop of broccoli [Brassica oleracea L. (Italica Group)] in 1992 and 1993. Urea was used to supply 0, 84, or 168 kg·ha-1 of supplemental nitrogen (N) to broccoli which followed cowpeas. Control broccoli plots were grown on fallowed ground and were supplied with 168 kg·ha-1 of N from urea. Cowpea incorporation added over 100 kg·ha-1 of N to the soil in both years. In 1992, treatments had no significant effect on yield of marketable broccoli heads, but average head weight was reduced in the absence of external N. I

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3

Ortiz, Rodomiro. "Cowpeas from Nigeria: A Silent Food Revolution." Outlook on Agriculture 27, no. 2 (1998): 125–28. http://dx.doi.org/10.1177/003072709802700210.

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Cowpeas ( Vigna unguiculata (L.) Walp.) are an important native African legume crop, whose seeds are sold in local urban and rural markets. West Africa is the main centre of diversity for cowpeas. Nigeria is the world's largest producer and second in acreage. The production trend shows a significant improvement of cowpea cultivation in this country from 1961 to 1995. In this period, Nigerian cowpea production increased by 441% according to available statistics of the United Nations Food and Agriculture Organization (FAO). This paper discusses the evolution of cowpea production from the early 1

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Hussain, M. A., I. O. Akinyele, and A. Omololu. "Maternal Perceptions of Gastro-Intestinal Problems in the Feeding of Cowpeas (Vigna Unguiculata) to Young Children in Rural Ibadan, Nigeria." Food and Nutrition Bulletin 14, no. 1 (1992): 1–5. http://dx.doi.org/10.1177/156482659201400103.

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A total of 880 questionnaires were completed and analysed to ascertain the perception of mothers as to the problems encountered by children consuming cowpeas. Over 90% of all mothers surveyed reported no problems attributable to the feeding of cowpeas. However, 9.9% (87) of the mothers reported that their children had problems after the consumption of cowpea foods. Of all the mothers, 101 introduced cowpea foods for the first time at an age below six months, 470 between six and twelve months, 278 between one and two years, and 31 above two years. Of the 87 mothers reporting discomfort in their

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5

Wang, Guangyao, Milton E. McGiffen, and Jeff D. Ehlers. "Competition and growth of six cowpea (Vigna unguiculata) genotypes, sunflower (Helianthus annuus), and common purslane (Portulaca oleracea)." Weed Science 54, no. 5 (2006): 954–60. http://dx.doi.org/10.1614/we-06-045r.1.

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Varietal growth habit could play a key role in the competitiveness of crop plants with weeds. The relative competitiveness of two erect, two semierect, and two prostrate cowpea genotypes with a tall-growing (common sunflower) or a low-growing (common purslane) species was evaluated in 12 replacement-series experiments conducted in 2003 and 2004. Growth analysis of the six cowpea genotypes and two weed species were also conducted to investigate the relationship of competitiveness and growth. Cowpea genotype and competitor biomass were used to calculate relative yield total (RYT) and aggressivit

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Kline, A. S., and E. J. Anderson. "First Report of Cowpea Aphid-Borne Mosaic Potyvirus from Cowpeas Grown Commercially in the U.S." Plant Disease 81, no. 8 (1997): 959. http://dx.doi.org/10.1094/pdis.1997.81.8.959c.

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Cowpea aphid-borne mosaic potyvirus (CABMV) is one of several seed-borne viruses known to limit cowpea (Vigna unguiculata (L.) Walp. subsp. unguiculata) production in Africa, Europe, and Asia, but CABMV has not been reported on commercially grown cowpeas in the United States (1). However, a sesame (Sesamum indicum L.)-infecting isolate of CABMV was recently characterized from plants growing near cowpea introduction plots in Georgia (2). In February 1997, we received samples of three seed lots of cowpea cv. Chinese Red that had been harvested in southern Texas during 1996. Approximately 28% of

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7

Nkomo, Gabriel V., Moosa M. Sedibe, and Maletsema A. Mofokeng. "Production Constraints and Improvement Strategies of Cowpea (Vigna unguiculata L. Walp.) Genotypes for Drought Tolerance." International Journal of Agronomy 2021 (March 22, 2021): 1–9. http://dx.doi.org/10.1155/2021/5536417.

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Cowpea (Vigna unguiculata L. Walp. L) is an important leguminous crop largely grown by smallholder farmers in sub-Saharan Africa for food security and animal feed. The objective of this study was to review the production constraints and improvement strategies of cowpea genotypes for drought tolerance. Data were analysed through use of literature review from various sources. In sub-Saharan Africa, cowpeas are produced mainly from West Africa, which accounts for 60% of worldwide production. A lot of pests and diseases affect cowpeas, and this often results in total crop loss. Through continuous

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8

Makinde, F. M., and O. O. Abolarin. "Effect of Post-Dehulling Treatments on Anti-Nutritional and Functional Properties of Cowpea (Vigna Unguiculata) Flour." Journal of Applied Sciences and Environmental Management 24, no. 9 (2020): 1641–47. http://dx.doi.org/10.4314/jasem.v24i9.23.

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Recently, cowpea (Vigna unguiculata) has been cited for imparting specific positive health potentiating responses when properly positioned in the diet. However, inherent anti-nutritional factors in cowpea have long been recognized as concerns and require appropriate processing conditions to ameliorate adverse effects. The study focuses on effect of post-dehulling treatments on anti-nutritional and functional properties of cowpea flour. Three genotypes of cowpea (IT99K-573-2-1, IT96D-610, and IT07K-292-10) were dehulled. Dehulled cowpeas were boiled, roasted or autoclaved and prepared into flou

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Haruna, Peter, Aaron T. Asare, and Francis Kusi. "Assessment of Striga gesnerioides (Willd.) Resistance and Genetic Characterization of Forty-Six Cowpea (Vigna unguiculata (L.) Walp.) Genotypes in Ghana." International Journal of Agronomy 2020 (June 23, 2020): 1–9. http://dx.doi.org/10.1155/2020/3635157.

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The parasitic weed, Striga gesnerioides, imposes physiological stress on cowpea (Vigna unguiculata (L.) Walp.) resulting in significant yield loss in the regions of northern Ghana. This warranted identification of resistant cowpeas for sustainable production. The current work aim was to identify Striga-resistant cowpea genotypes and assess their genetic relatedness. Forty-six (46) cowpea genotypes were screened in pots for their reaction to Striga samples obtained from the upper east, upper west, and northern regions of Ghana and validated with C42-2B and 61R-M2 markers involving DNA amplifica

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Susrama, I. Gede Ketut, and I. Gede Putu Wirawan. "IN VIVO MULTISTEP MUTAGENESIS INDUCTION USING COLCHICINE ON COWPEA MUTANT 1 (Vigna unguiculata L. Walp)." International Journal of Biosciences and Biotechnology 5, no. 2 (2018): 118. http://dx.doi.org/10.24843/ijbb.2018.v05.i02.p04.

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In the previous research, we obtained three catagories of M1 mutant cowpea namely 1) purple pod mutant cowpea, 2) green pod mutant cowpea which has three pods in a stalk, and 3) green pod mutant cowpea which has two pods in a stalk. All those three catagories of M1 mutant cowpeas were treated again with colchicine in a multistep mutagenesis proses in vivo. Then, we found changes in number of leaflet in a petiole to 4 leaflets (quadrifoliate) and to five leaflets in a petiole (pentafoliate). These changes are indications that beside as a chromosome multipying alkaloid, colchicine causes other g

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Olaniran, Abiola Folakemi, Clinton Emeka Okonkwo, Omorefosa Osarenkhoe Osemwegie, et al. "Production of a Complementary Food: Influence of Cowpea Soaking Time on the Nutritional, Antinutritional, and Antioxidant Properties of the Cassava-Cowpea-Orange-Fleshed Potato Blends." International Journal of Food Science 2020 (October 28, 2020): 1–10. http://dx.doi.org/10.1155/2020/8873341.

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Soaking and incorporation of legumes for fortification are essential to a complementary food production process. Cassava, orange-fleshed potato, and cowpeas are sustainably cheap, locally available, and underutilized for food biofortification. This study investigated the effect of cowpea soaking time (3, 6, and 9 h) on different composition ratios of cassava, cowpea, and orange-fleshed sweet potato (CCP) blends (50 : 40 : 10 (EC), 50 : 30 : 20 (FC), 50 : 20 : 30 (GC), and 50 : 50 : 0 (HC)). Each blend was assayed for pH, antinutrient, antioxidant, and proximate contents. Results obtained showe

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Kline, A. S., E. J. Anderson, and E. B. Smith. "Occurrence of Cowpea Stunt Disease Causing Viruses on Wild Bean in Arkansas." Plant Disease 81, no. 2 (1997): 231. http://dx.doi.org/10.1094/pdis.1997.81.2.231d.

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Cucumber mosaic cucumovirus (CMV) and blackeye cowpea mosaic potyvirus (BlCMV) interact synergistically in dually infected plants to cause cowpea stunt disease (1,2). During a July 1996 survey of cowpea stunt-affected fields in the Arkansas River valley, several wild bean (Strophostyles helvola L. Elliott) plants expressing mosaic symptoms were observed and collected. Sap was extracted from symptomatic leaves and used as inoculum to conduct a host range study. Virus symptoms diagnostic for BlCMV, CMV, or cowpea stunt were observed 6 to 8 days post-inoculation on Vigna unguiculata (L.) Walp. su

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Hampton, Richard O. "SEED-BORNE VIRUSES IN U.S. COWPEA CROPS: A STATUS REPORT AND STRATEGY FOR VIRAL DISEASE CONTROL." HortScience 29, no. 7 (1994): 728c—728. http://dx.doi.org/10.21273/hortsci.29.7.728c.

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Blackeye cowpea mosaic potyvirus is the most easily observable seed-borne virus in cowpeas, but is typically seed-transmitted at lower rates (i.e., 0.1 to 2%) than the less conspicuous cowpea severe mosaic comovirus or cucumber mosaic cucumovirus. All three viruses are readily vector transmissible after seed-borne inoculum reaches the field, perpetuating and spreading the viruses. Individually and particularly in mixtures, these viruses are capable of decreasing both seed quality and yield. Disease-tolerant cultivars are available, but fail to control viral diseases. Development of superior ne

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14

Dareus, Rocheteau, Antonio Carlos Mota Porto, Mesfin Bogale, Peter DiGennaro, Carlene A. Chase, and Esteban Fernando Rios. "Resistance to Meloidogyne enterolobii and Meloidogyne incognita in Cultivated and Wild Cowpea." HortScience 56, no. 4 (2021): 460–68. http://dx.doi.org/10.21273/hortsci15564-20.

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Cowpea [Vigna unguiculata (L.) Walp] is a multipurpose crop that provides nutrients for human and livestock diets, as well as regulates and supports ecosystem services. In developing countries, cowpea is exploited as a dual-purpose crop for its grain and fodder; it is cultivated primarily for grain and as a cover crop in industrialized countries. However, root-knot nematodes (RKNs) (Meloidogyne spp.) represent a threat to cowpea production worldwide. Thus, we screened the University of California, Riverside (UC-Riverside), cowpea mini-core collection for resistance to Meloidogyne incognita Kof

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15

Highland, Henry A. "PENETRATION OF PACKAGING FILMS BY THE COWPEA WEEVIL (COLEOPTERA: BRUCHIDAE)1." Journal of Entomological Science 21, no. 1 (1986): 33–37. http://dx.doi.org/10.18474/0749-8004-21.1.33.

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Cowpeas infested with the cowpea weevil, Callosobruchus maculatus (F.), were sealed individually in small packets made of various packaging films. Also, other small packages of insect-free cowpeas were subjected to attack by C. maculatus adults placed inside and outside the packages. Packages made of polyurethane, polyester, polyethylene/ethylene vinyl acetate, saran, or permethrin-treated polypropylene resisted penetration. Thin saran film, polypropylene, paper/polyethylene, polyvinyl chloride, polyethylene, and cellophane films were penetrated.

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Dingha, Beatrice N., Paul C. Omaliko, Barbara A. Amoah, Louis E. Jackai, and Deepak Shrestha. "Evaluation of Cowpea (Vigna unguiculata) in an Intercropping System as Pollinator Enhancer for Increased Crop Yield." Sustainability 13, no. 17 (2021): 9612. http://dx.doi.org/10.3390/su13179612.

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Production of pollinator-dependent crops (PDCs) is increasing. However, pollinators are declining partly due to loss of floral resources. There is urgency to mitigate this decline and the potential risks to the production of PDCs and food security. One way is by promoting farming systems that enhance flower-rich habitats. In a two-year study, Pinkeye Purple Hull and Whippoorwill cowpea varieties attractive to pollinators were intercropped with three PDCs (squash, okra, and watermelon). We evaluated whether cowpea intercrop increases the abundance and diversity of pollinators, other beneficial

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Kassali, Rabirou, Abayomi Yusuf Oyewale, and Olufemi Adedotun Yesufu. "Analysis of Consumer’s WTP for Cowpea Varieties in Osun State, Nigeria: the Hedonic Pricing Approach." Turkish Journal of Agriculture - Food Science and Technology 6, no. 9 (2018): 1120. http://dx.doi.org/10.24925/turjaf.v6i9.1120-1128.1832.

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Analysis of consumer preferences for cowpea varieties in Osun State was carried out with a view to identifying attributes that determine price variation among cowpea varieties and the effect on consumer’s willingness to pay for those varieties. A multistage sampling technique was used to randomly select 240 respondents for the study, comprising 180 cowpea consumers and 60 retailers. Primary data were collected on cowpea varieties, their attributes and the consumer’s willingness to pay for cowpea varieties using well structured questionnaire. Data collected were analysed using both descriptive

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WARDROP, Alison J., Ronald E. WICKS, and Barrie ENTSCH. "Occurrence and expression of members of the ferritin gene family in cowpeas." Biochemical Journal 337, no. 3 (1999): 523–30. http://dx.doi.org/10.1042/bj3370523.

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Ferritin gene expression has been demonstrated in a variety of plants including maize, Arabidopsis, cowpeas, soybeans, beans and peas. Most available evidence shows that the mature protein is located in plastids and its production is under gene transcriptional control. In maize, two different ferritin genes have been identified; they were found to express protein under different physiological conditions. Only single gene products have been found until now in the other plants, with the exception of cowpeas (Vigna unguiculata). Our previous work with cowpeas [Wicks and Entsch (1993) Biochem. Bio

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Jackai, LEN, F. Quarcoo, A. Ado-Bediako, et al. "GROWING SOUTHERNPEAS WITHOUT INSECTICIDES IN SOUTH-CENTRAL ALABAMA IS THIS AN ABERRATION OR A SUSTAINABLE TREND?" HortScience 40, no. 3 (2005): 876f—877. http://dx.doi.org/10.21273/hortsci.40.3.876f.

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A considerable amount of cowpea, or southernpea, is grown in Alabama by small, limited resource farmers for home consumption, fresh market or for direct freezing. Most cowpea is retailed in Farmers' Markets, from roadside stands, or as a “you pick” crop and usually sells for $15 to $25 per bushel. Cowpea fodder has also been shown to be a good feed supplement for goats. Many growers plant cowpea several times during the season, in part to satisfy customer demands throughout the summer and fall, but also because cowpea will often grow and produce a relatively good crop even if the rainfall were

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Sombié, Pierre, Moussa Compaoré, Ahmed Coulibaly, Jeremy Ouédraogo, Jean-Baptiste Tignégré, and Martin Kiendrébéogo. "Antioxidant and Phytochemical Studies of 31 Cowpeas (Vigna unguiculata (L. Walp.)) Genotypes from Burkina Faso." Foods 7, no. 9 (2018): 143. http://dx.doi.org/10.3390/foods7090143.

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Antioxidant compounds of dietary plants have been widely studied because of their bioactive properties. The objective of this research study was to analyse the health enhancing attributes of 31 cowpeas varieties from Burkina Faso. Significant variations were observed in the phenolic content as well as the antioxidant and anti-lipid peroxidation activities amongst the cowpea varieties. Pearson correlation coefficient analysis showed that the ferric reducing ability (r = 0.954) and anti-lipid peroxidation (r = 0.616) were positively correlated with the total phenolic content. A significant relat

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Sanon, Antoine, Ilboudo Zakaria, Dabire-Binso Clémentine L, Ba Malick Niango, and Nébié Roger Charles Honora. "Potential of Botanicals to Control Callosobruchus maculatus (Col.: Chrysomelidae, Bruchinae), a Major Pest of Stored Cowpeas in Burkina Faso: A Review." International Journal of Insect Science 10 (January 1, 2018): 117954331879026. http://dx.doi.org/10.1177/1179543318790260.

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Cowpea is an essential food legume in the tropics and particularly for sub-Saharan African populations. Postharvest grain storage, however, is a major constraint for crop expansion and year-round availability due to the cowpea weevil, Callosobruchus maculatus F., the main storage pest of cowpeas in West Africa. The use of chemicals for cowpea storage is a common practice which represents, however, a risk for consumers, environment, and could also exacerbate pest control. In Burkina Faso, since the early 2000s, several scientific investigations have focused on the control of C maculatus using b

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Thies, J. A., P. A. Berland, and R. L. Fery. "RESPONSE OF COWPEA CULTIVARS TO RHIZOCTONIA SOLANI IN FIELD TESTS." HortScience 40, no. 3 (2005): 876c—876. http://dx.doi.org/10.21273/hortsci.40.3.876c.

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Rhizoctonia solani is an important pathogen of cowpea (Vigna unguiculata) in the southern U.S. and worldwide. Cowpeas are especially susceptible to seedling diseases caused by R. solani when planted in cold, moist, spring soils. Nine cowpea cultivars were evaluated in inoculated field tests at six planting dates in Charleston, S.C., during 2004. The cowpea cultivars evaluated were Bettergro Blackeye, Knuckle Purple Hull, Mississippi Silver, Colossus-80, Charleston Nemagreen, Texas Cream-40, White Acre, Coronet, and Charleston Greenpack. The tests were planted on 20 Apr., 29 Apr., 11 May, 19 Ma

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McLeod, Paul, and Tahir Rashid. "Impact of Tobacco Thrips on Cowpea." Plant Health Progress 13, no. 1 (2012): 6. http://dx.doi.org/10.1094/php-2012-1019-01-rs.

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In the southern US, seedling cowpeas are severely injured by the tobacco thrips, Frankliniella fusca (Hinds). This feeding results in discoloration and distortion of the leaf tissue. Although damage from thrips feeding on foliage is common and appears substantial, recent studies have demonstrated little impact on cowpea yield. Caging up to ten F. fusca per cowpea seedling failed to significantly reduce number of pods, seed number, or seed weight when compared to cowpea seedlings caged with no thrips. Also, no significant differences in the days to initial flowering were detected among the trea

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D'Andrea, A. C., S. Kahlheber, A. L. Logan, and D. J. Watson. "Early domesticated cowpea (Vigna unguiculata) from Central Ghana." Antiquity 81, no. 313 (2007): 686–98. http://dx.doi.org/10.1017/s0003598x00095661.

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From examining the remains of charred cowpeas from rock shelters in Central Ghana, the authors throw light on the subsistence strategies of the Kintampo people of the second millennium BCE. Perhaps driven southwards from the Sahel by aridification, the Kintampo operated as both foragers and farmers, cultivating selected plants of the West African tropics, notably cowpea, pearl millet and oil palm.

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SILVA, LANESSA VIEIRA DA, SILVIA BRAZ RODRIGUES DE OLIVEIRA, LEONARDO ARAÚJO DE AZEVEDO, ARTENISA CERQUEIRA RODRIGUES, and AURENIVIA BONIFACIO. "COINOCULATION WITH Bradyrhizobium AND Trichoderma ALLEVIATES THE EFFECTS OF SALT STRESS IN COWPEA." Revista Caatinga 32, no. 2 (2019): 336–44. http://dx.doi.org/10.1590/1983-21252019v32n206rc.

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ABSTRACT The deleterious effects of salt stress can be mitigated by the use of beneficial microorganisms. The aims of this study were to evaluate whether coinoculation with Bradyrhizobium and Trichoderma asperelloides alleviates salt stress in cowpea. The experiment was conducted in a greenhouse using pots filled with sterile soil. Seeds were sown and inoculated with Bradyrhizobium or coinoculated with Bradyrhizobium and T. asperelloides. At 15 days after sowing (DAS), the nitrogen-free nutritive solution was supplemented with 50 or 100 mmol L-1 sodium chloride (NaCl) to induce salinity. Unino

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KOEHLER, P. E., L. R. BEUCHAT, and M. S. CHHINNAN. "Influence of Temperature and Water Activity on Aflatoxin Production by Aspergillus flavus in Cowpea (Vigna unguiculata) Seeds and Meal." Journal of Food Protection 48, no. 12 (1985): 1040–43. http://dx.doi.org/10.4315/0362-028x-48.12.1040.

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Experiments were done to determine the influence of temperature (21, 30 and 37°C) and aw (0.76 to 0.98) on aflatoxin production by Aspergillus flavus on cowpea (Vigna unguiculata) seeds, meal and meal supplemented with onion. Larger quantities of aflatoxin were produced at 21 and 30°C than at 37°C. The highest amount of aflatoxin (2777 μg/20 g, dry weight basis) was observed in meal containing onion at aw 0.98 after 20 d of incubation at 21°C. A level of 870 |μg/20 g was detected in seeds at aw 0.95 after 14 d of incubation at 30°C. Meal at aw 0.96 supported production of 551 μg of aflatoxin p

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Marsh, Lurline E., and Mohsen Dkhili. "GERMINATION AND GROWTH OF COWPEA AND PIGEONPEAS AT CONTROLLED LOW TEMPERATURES." HortScience 27, no. 6 (1992): 682f—682. http://dx.doi.org/10.21273/hortsci.27.6.682f.

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Twenty cowpea (Vigna unguiculata) and 10 early maturing pigeonpea (Cajanus cajan) genotypes were grown at 20/10 C, and 17/10 C day/night and 16 hr. photoperiod to assess their germination and growth. At 20/10 C eighteen cowpea genotypes including the line MN13, and the cultivar, Pinkeye Purple Hull commenced germination at 6 days after planting and showed at least 80% germination 21 days later. Generally, genotypes did not differ significantly in germination and seedling growth up to 45 days later. At 17/10 C two of the cowpea genotypes IT 82E-16 and IT 84E-124 attained at least 90% germinatio

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LIU, L. G., X. Y. ZHOU, Z. LAN, et al. "Salmonella Typhimurium outbreak associated with a contaminated food container in a school in Sichuan Province, China." Epidemiology and Infection 144, no. 2 (2015): 285–90. http://dx.doi.org/10.1017/s0950268815001387.

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SUMMARYOn 13 June 2013, a fever and diarrhoea outbreak occurred in a boarding school in Sichuan Province. We conducted a field investigation and compared food exposure of 81 case students and 104 control students (years 7 and 8) in order to identify the source of infection. There were 401 cases identified (399 students and two cooks). The attack rates were 23–46% in nursery, primary, and secondary schools, but 0% in the high school. Eighty-five percent of case students, consumed cowpea salad compared to 60% of control students at lunch on 12 June (odds ratio 3·1, 95% confidence interval 1·3–7·

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Kahn, Brian A., and Judith L. Schroeder. "Comparison of Root Characteristics of Conventionally Grown Cowpeas and Cowpeas Grown without Added Nitrogen Fertilizer." HortScience 31, no. 4 (1996): 687b—687. http://dx.doi.org/10.21273/hortsci.31.4.687b.

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Field experiments were conducted in Oklahoma in 1993 and 1994. Cowpeas [Vigna unguiculata (L.) Walp.] were grown using either non-inoculated seed and 23 kg·ha–1 of preplant nitrogen fertilizer (conventional) or inoculated seed and no preplant nitrogen fertilizer (reduced input). Sample plants were excavated at first pod set and analyzed for nodulation and root morphology. Additional plants were excavated at the green-shell stage and were analyzed for nitrogen concentration. Conventional and reduced input cowpeas did not differ in nodule distribution among root morphological components, total n

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Savadogo, Salfo, Anne Mette Lykke, Lassina Traore, Abdoulaye Sereme, and Adjima Thiombiano. "Bio-insecticide potential of three aromatic plants of Burkina Faso (Ocimum americanum L., Cymbopogon schoenanthus L. and Hyptis suaveolens Poit.) and their importance in cowpea seed conservation." International Journal of Biological and Chemical Sciences 14, no. 4 (2020): 1167–76. http://dx.doi.org/10.4314/ijbcs.v14i4.1.

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Cowpea is an important source of food and income for the populations of sub-Saharan Africa in general and particularly in West Africa. However, farmers face storage and conservation problems. During storage in granaries, cowpea seeds are attacked by insects causing decreased grain weight and quality and sometimes a loss of germination capacity. Traditionally, farmers have used aromatic plants to limit insect damage. The aim of the present study is to test the insecticidal potential of three aromatic plants (Ocimum americanum L., Cymbopogon schoenanthus L. and Hyptis suaveolens Poit.). Cowpea s

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Brainard, Daniel C., Robin R. Bellinder, and Virender Kumar. "Grass–Legume Mixtures and Soil Fertility Affect Cover Crop Performance and Weed Seed Production." Weed Technology 25, no. 3 (2011): 473–79. http://dx.doi.org/10.1614/wt-d-10-00134.1.

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Summer leguminous cover crops can improve soil health and reduce the economic and environmental costs associated with N fertilizers. However, adoption is often constrained by poor weed suppression compared to nonlegume cover crops. In field experiments conducted in organic vegetable cropping systems in north-central New York, two primary hypotheses were tested: (1) mixtures of legume cover crops (cowpea and soybean) with grasses (sorghum–sudangrass and Japanese millet) reduce weed seed production and increase cover crop productivity relative to legume monocultures and (2) higher soil fertility

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Oghiakhe, S., L. E. N. Jackai, W. A. Makanjuola, and C. J. Hodgson. "Morphology, distribution, and the role of trichomes in cowpea (Vigna unguiculata) resistance to the legume pod borer, Maruca testulalis (Lepidoptera: Pyralidae)." Bulletin of Entomological Research 82, no. 4 (1992): 499–505. http://dx.doi.org/10.1017/s0007485300042577.

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AbstractStudies on the morphology and distribution, and the role of trichomes in damage to cowpea (Vigna unguiculata) by the legume pod borer Maruca testulalis (Geyer) showed that trichome cover on individual cultivars varied in trichome length and density, but not in trichome type from different plant parts. Trichome density on different parts decreased with increasing plant age. Significant (P <0.05) negative correlations were obtained between total trichome density on pods, pod infestation and damage severity. In contrast, correlations between length of non-glandular trichomes on pods, p

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Holland, JF, and DF Herridge. "Production of summer crops in northern New South Wales. II. Effects of tillage and crop rotation on yields of sorghum." Australian Journal of Agricultural Research 43, no. 1 (1992): 123. http://dx.doi.org/10.1071/ar9920123.

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Two crops of sorghum were grown in successive summer seasons at 3 sites on alkaline, black earth soils near Tamworth, New South Wales following either soyabeans, mungbeans, cowpeas, pigeonpeas, sunflowers or sorghum. Tillage practices were cultivation using a chisel plough and scarifier, and no-tillage using atrazine and glyphosate for weed control. Variation in grain yield (1.0-8.4 t/ha) was largely associated with variation in Dec.-Feb. rainfall (128-475 mm). An average of 15 kg grain/ha was produced for each mm water above the threshold value of 83 mm. At the high (Site A) and low (Site C)

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Sombie, Pierre A. E. D., Ibrahim Ouedraogo, Jean Baptiste D. L. S. Tignegré, Adama Hilou, Tinga J. Ouedraogo, and Martin Kiendrébéogo. "Genotypic Variation of Mineral Elements and Phytate Levels of Thirty Cowpeas (Vigna unguiculata L. Walp.) Varieties Cultivated in Burkina Faso." Journal of Food Chemistry and Nutrition 6, no. 1 (2018): 13–20. http://dx.doi.org/10.33687/jfcn.006.01.2343.

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Cowpea is consumed as a staple food in many developing countries. The present study was undertaken to determine the variation in mineral elements and phytate concentrations in 30 cowpeas seeds varieties consumed in Burkina Faso. The composition of the thirty cowpeas seeds in total mineral varies from 5.08 % ± 0.00 to 3.55 % ± 0.08. The genotype CR06-07 showed the high content of total mineral (ashes) and the genotype Kondesyoungo local, the low content of ashes. IT81D-994 showed the high content of iron (7.07 ± 0.057 mg/100g of seeds dw), zinc (4.42 ± 0.012 mg/100 g of seeds dw), magnesium (23

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Murdock, L. L., and R. E. Shade. "Eradication of Cowpea Weevil (Coleoptera: Bruchidae)in Cowpeas by Solar Heating." American Entomologist 37, no. 4 (1991): 228–31. http://dx.doi.org/10.1093/ae/37.4.228.

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Riley, David G., Sydni Barwick, Alton N. Sparks, Thomas Harty, and Negin Hamadi. "Reproductive Biology and Evidence of Diapause in the Cowpea Curculio (Coleoptera: Curculionidae)." Journal of Economic Entomology 113, no. 2 (2019): 882–86. http://dx.doi.org/10.1093/jee/toz349.

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Abstract Chalcodermus aeneus Boheman (Coleoptera: Curculionidae) has been the most destructive insect pest of black-eyed peas or cowpeas, Vigna unguiculata L. (Fabales: Fabaceae), over the last century in the southeastern United States. The historical distribution of this semitropical pest suggests the likelihood that diapause plays a key role in the overwintering success in parts of the United States. However, this report is the first to document biological evidence for diapause in C. aeneus. Our study assessed larval emergence from cowpea pods in the summer to fall growing seasons, egg devel

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Odion, E. E., O. J. Abolagba, J. O. Igene, S. F. Usifoh, and C. O. Usifoh. "Analysis of Aldrin, Endosulfan and Heptachlor epoxide in Cowpea from South-West Nigeria." Journal of Basic and Social Pharmacy Research 2, no. 1 (2021): 8–19. http://dx.doi.org/10.52968/27458531.

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Background: Pesticides are applied on cowpeas to reduce the losses incurred to the attack by Callosobruchus maculatus which adversely affect its production and storage. Objectives: This study aims to evaluate the mean concentration of heptachlor epoxide, aldrin and endosulfan in randomly collected cowpeas obtained from local markets in South-West states of Nigeria and compare the mean concentration with the maximum residual limit (MRL) set by the regulatory body. Method: Seventy-six samples of cowpeas were collected from from local markets within the study area, pulverised, extracted with dich

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Akinyele, I. O., and A. Akinlosotu. "Contribution of cowpea (Vigna unguiculata) in a mixed diet to the nutrient intake of rural children in Ibadan." British Journal of Nutrition 58, no. 1 (1987): 31–39. http://dx.doi.org/10.1079/bjn19870066.

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1. Sixty-four subjects from the rural areas of Ibadan participated in a study to determine the contribution of cowpea (Vigna unguiculata) foods to the total intake of nutrients in a mixed diet. The subjects were randomly selected from those who, according to their mothers, reacted to cowpea foods (reactors) and those who did not (non-reactors).2. The results showed that for all subjects, protein, energy and riboflavin needs were not met from the total diet consumed. However, the requirements for vitamin A, thiamin and iron were met.3. Between 30 months and 3 years of age, cowpeas contributed 3

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Jackai, L. E. N., and S. Oghiakhe. "Pod wall trichomes and resistance of two wild cowpea, Vigna vexillata, accessions to Maruca testualis (Geyer) (Lepidoptera: Pyralidae) and Clavigralla tomentosicollis Stål (Hemiptera: Coreidae)." Bulletin of Entomological Research 79, no. 4 (1989): 595–605. http://dx.doi.org/10.1017/s0007485300018745.

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AbstractExperiments were conducted to investigate the role of pubescence in the resistance of two wild cowpea varieties, TVNu 72 and TVNu 73, to feeding and damage caused by two cowpea pests, Maruca testulalis (Geyer) and Clavigralla tomentosicollis Stål. The fine structure of the trichomes was also studied by electron microscopy in order to try to determine the role played by trichomes in the resistance of these varieties to both pests. Feeding and development were deterred in both insects on pods of TVNu 72 and TVNu 73 with or without trichomes compared to the susceptible variety, IT84E-124.

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Dodson, Hallie G., J. B. Murphy, and T. E. Morelock. "IDENTIFYING AMOUNTS AND TYPES OF ANTHOCYANINS IN CULTIVARS AND BREEDING LINES OF COWPEAS." HortScience 40, no. 3 (2005): 873d—873. http://dx.doi.org/10.21273/hortsci.40.3.873d.

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Anthocyanins are naturally occurring plant pigments that are classified as flavonoids. Anthocyanins have important antioxidant properties which may help in prevention of cancer, arthritis, and cardiovascular disease. Finding common sources and possibly increasing levels of anthocyanins in food could be important to human health. This research project determined amount and type of anthocyanins in 16 cultivars and breeding lines of cowpeas (Vigna unguiculata). The information obtained from this research project will be used to improve anthocyanin content of cowpeas by breeding. Of the 16 cultiva

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Alsup, Clydette, and Brian A. Kahn. "Use of Cowpea to Manage Soil Phosphorus Accumulation from Poultry Litter Applications in a Cool-season Vegetable Rotation." HortScience 33, no. 4 (1998): 591a—591. http://dx.doi.org/10.21273/hortsci.33.4.591a.

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Cowpea [Vigna unguiculata L. (Walp.)] cover crops were grown in a rotation with broccoli (Brassica oleracea L. var. italica Plenck.), spinach (Spinacia oleracea L.), and turnip greens [Brassica rape L. var. (DC.) Metzg. utilis] to evaluate the legume's ability to remove excess P from soils when poultry litter was used as a fertilizer. Fertilizer treatments were litter to meet each crop's recommended preplant N requirements (1X), litter at twice the recommended rate, and urea at the IX rate as the control. Following the vegetable crops, cowpeas were planted on half of each replication, while th

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MOREIRA-ARAÚJO, REGILDA SARAIVA DOS REIS, GENI RODRIGUES SAMPAIO, ROSANA APARECIDA MANÓLIO SOARES, CÍNTIA PEREIRA DA SILVA, MARCOS ANTONIO DA MOTA ARAÚJO, and JOSÉ ALFREDO GOMES ARÊAS. "IDENTIFICATION AND QUANTIFICATION OF PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITY IN COWPEAS OF BRS XIQUEXIQUE CULTIVAR." Revista Caatinga 31, no. 1 (2018): 209–16. http://dx.doi.org/10.1590/1983-21252018v31n124rc.

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ABSTRACT Cowpea (Vigna unguiculata [L.] Walp.) is one of the most important legumes produced in tropical and subtropical regions throughout the world, especially in the developing countries in Africa, Latin America, and Asia. It is the main source of protein, calories, dietary fiber, minerals, and vitamins for a large segment of the world population. Cowpea is also a potential functional food with a range of bioactive compounds, including phenolic compounds. This legume is grown mainly in the North and Northeast regions of Brazil, but is also consumed in other regions, and is thus important fo

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Webber III, Charles L., Paul M. White Jr., Caleb Dalley, Eric C. Petrie, Ryan P. Viator, and James W. Shrefler. "Kenaf (Hibiscus cannabinus) and Cowpea (Vigna unguiculata) as Sugarcane Cover Crops." Journal of Agricultural Science 8, no. 8 (2016): 13. http://dx.doi.org/10.5539/jas.v8n8p13.

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<p>A Louisiana sugarcane field is typically replanted every four years due to declining yields, and, although, it is a costly process, it is both necessary and an opportunity to maximize the financial return during the next four year cropping cycle. Fallow planting systems (FPS) during the fallow period prior to replanting sugarcane have the potential to influence not only the following sugarcane crop, but the economics of the production system as a whole. A 2 year experiment was conducted at the USDA, ARS, Sugarcane Research Unit at Houma, LA to determine the impact of unique FPS on sug

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Kahn, Brian A., and Judith L. Schroeder. "Root Characteristics and Seed Yields of Cowpeas Grown with and without Added Nitrogen Fertilizer." HortScience 34, no. 7 (1999): 1238–39. http://dx.doi.org/10.21273/hortsci.34.7.1238.

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Field experiments were conducted in Oklahoma in 1993 and 1994. Cowpeas [Vigna unguiculata (L.) Walp.] were grown using either noninoculated seed and 23 kg·ha–1 of preplant nitrogen (N) fertilizer (conventional) or Rhizobium-inoculated seed and no preplant N fertilizer (reduced input). Sample plants were excavated at first pod set and analyzed for nodulation and root morphology. Additional plants were harvested at the green-shell stage to determine seed yield and plant N concentration. Conventional and reduced input cowpeas did not differ in dry weight of root mass components, total root dry we

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Pratama Lumban Tobing, Yoga, Robiyanto, and Rafika Sari. "TEST OF THE EFFECTIVENESS OF THE COMBINATION OF CUCUMBER JUICE (Cucumis sativus Linn,) AND LONG BEANS(Vigna sinensis (L.) Savi Ex Has.)ON THE WISTAR MALE RATS THAT IS INDUCED BY SUKROSA." JURNAL BORNEO AKCAYA 3, no. 2 (2016): 29–34. http://dx.doi.org/10.51266/borneoakcaya.v3i2.69.

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Diabetes mellitus is metabolic disorder caused by high glucose level due to abnormalities in insulin secretions, work or both that can be caused by alpha-glucosidase and alpha-amylase in intestine. Cucumbers (Cucumis sativus) and cowpeas (Vigna sinensis) are reported as anti-diabetic. The objective of the present study was to determine the effectiveness of cucumber-cowpea juice combination with single juice and metformin on lowering blood glucose level. Rats were made hyperglycemic by induced sucrose 6,825 g/Kg BW orally. Sample was taken on the lateral vein rat tail. Blood glucose levels were

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Joshua, T., and J. Zalkuwi. "Analysis of cowpea price forecasting in Adamawa state, Nigeria." Agricultural Science and Technology 11, no. 3 (2019): 226–31. http://dx.doi.org/10.15547/ast.2019.03.039.

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Abstract. The study was conducted to analyze cowpea price forecasting in Adamawa State, Nigeria. The sources of data for the study were secondary data which were collected from State Planning Commission of Adamawa State for a period of 5 years (2013-2017). Purposive sampling techniques were used for selection of the study area. Dicky Fuller Test and Simple Exponential Smoothing Model were used as analytical tools. The unit root test analysis revealed almost all the markets price series were non-stationary at level except Jambutu market (AD5) at 5% significant level but became stationary after

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Blache, D., DW Miller, JTB Milton, and GB Martin. "The secretion of gonadotrophins, insulin and insulin-like growth factor 1 by Merino rams supplemented with different legume seeds." Australian Journal of Agricultural Research 47, no. 6 (1996): 843. http://dx.doi.org/10.1071/ar9960843.

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Supplementing mature rams with lupin seed (Lupinus angustifolius, a highly digestible source of energy and protein) increases gonadotrophin secretion within 5-10 days. When sheep receive a post-ruminal supplement of protein and energy equivalent to that in the lupin supplement, LH secretion is increased but not to the same extent as with lupin seed itself. This suggests that lupin seed contains a specific mixture of nutrients or an unknown component that exerts effects on the brain centres that control gonadotrophin secretion. This hypothesis was tested by comparing the responses to isonitroge

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Izuogu, N. B., T. U. Olajide, E. K. Eifediyi, and C. M. Olajide. "Effect of Root-knot Nematode (Meloidogyne incognita) on the Nodulation of Some Varieties of Cowpea (Vigna unguiculata L. Walp)." Scientia Agriculturae Bohemica 50, no. 2 (2019): 104–9. http://dx.doi.org/10.2478/sab-2019-0015.

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Abstract Screenhouse and field trials were conducted at the University of Ilorin, Nigeria in 2013 and 2014 to investigate the effect of root knot nematode (Meloidogyne incognita) on the nodulation of five varieties of cowpea (IT89KD-288, IT82D-994, IT93K-452-1, T89K-391 and TT97 568-18). Half of the experimental plants were inoculated with Meloidogyne incognita eggs (n = 1500) while the remaining half served as uninoculated control plants. Data on growth and yield of cowpea, root gall, nodulation, and nematodes population densities in nodules were collected. Other parameters assessed included

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Abreu, E. F. M., M. L. P. Tinoco, E. C. Andrade, and F. J. L. Aragão. "Diversity among isolates of cowpea severe mosaic virus infecting cowpeas in northeastern Brazil." Genetics and Molecular Research 11, no. 3 (2012): 3146–53. http://dx.doi.org/10.4238/2012.september.3.3.

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Ndlovu, T. M., and D. P. Giga. "Studies on Varietal Resistance of Cowpeas to the Cowpea Weevil, Callosobruchus rhodesianus (Pic)." International Journal of Tropical Insect Science 9, no. 01 (1988): 123–28. http://dx.doi.org/10.1017/s174275840001016x.

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