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Dissertations / Theses on the topic 'Cowplea'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Mfeka, Nonkululeko. "Morphology and mineral content of cowpea lines in response to planting date and zinc application rate." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2672.

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Thesis (MTech (Agriculture))--Cape Peninsula University of Technology, 2017.<br>Cowpea (Vigna unguiculata (L.) Walp) is an important grain and fodder legume grown around the world. It is a dual purpose grain legume crop, providing food for man and livestock. Cowpea is identified as a potential crop to diversify food production, minimize production input by improving soil fertility and improve micronutrients of seed, therefore, improving human nutrition. There is limited information available on cowpea production and suitable agronomic practices including planting date to best suit different en

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2

Kayitesi, Eugenie. "Micronisation of cowpeas : the effects on sensory quality, phenolic compounds and bioactive properties." Thesis, University of Pretoria, 2013. http://hdl.handle.net/2263/32972.

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Cowpeas (Vigna unguiculata L. Walp) are legumes recognised as a good source of proteins in developing countries. Cowpeas are mostly utilised as cooked whole seeds. This is often achieved only after boiling for up to 2 hours, resulting in high energy consumption and a long time for food preparation. Micronisation of pre-conditioned cowpeas (± 41 % moisture at 153 °C) reduces their cooking time. During micronisation, cowpea seeds are exposed to electromagnetic radiation with a wavelength range of 1.8 to 3.4μm. For biological materials, the penetration of infrared rays into the food materia

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3

Nagai, Tomokazu. "Competitiveness of cowpea-based processed products a case study in Ghana /." Diss., Connect to online resource - MSU authorized users, 2008.

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Thesis (M.S.)--Michigan State University. Dept. of Agricultural, Food, and Resource Economics, 2008.<br>Title from PDF t.p. (viewed on Aug. 4, 2009) Includes bibliographical references (p. 317-321). Also issued in print.

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4

Mwangwela, Agnes Mbachi. "Physicochemical characteristics of conditioned and micronised cowpeas and functional properties of the resultant flours." Thesis, Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-07302008-073321.

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5

Chiulele, Rogerio Marcos. "Morphological and physiological responses of cowpea (Vigna unguiculata (L) Walp.) cultivars to induced water stress and phosphorus nutrition." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/49770.

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Thesis (MScAgric) -- University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: Cowpeas are produced under low and irregular rainfall in most of arid and semi-arid areas of sub-Saharan Africa. Growth and yield are therefore reduced due to the occurrence of water stress during the growing season. Knowledge of the responses and adaptive mechanisms of cowpeas to water stress may help to improve the management practices for these areas. Therefore, three glasshouse experiments were conducted at Welgevallen Experimental Farm of the University of Stellenbosch to test the responses of two cowpea cu

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6

Daniel, Sarah H. "The use of neem (Azadirachta indica A Juss) and some plant oils as protectants of Cowpeas (Vigna unguiculata (L.) Walp.) against the Cowpea weevil Callosobruchus maculatus (Fab.)." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304524.

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7

Pakela, Yolisa Patronella. "Interaction between Colletotrichum dematium and cowpea." Thesis, Pretoria: [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-09022005-102127/.

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8

Ward, Andrew. "Partial application of insecticide to cowpea (Vigna unguiculata Walpers) as a means of controlling cowpea aphid (Aphis craccivora Koch) and the cowpea foliage beetle (Ootheca mutabilis Sahlberg)." Thesis, University of East Anglia, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327417.

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9

Abreu, Emanuel Felipe Medeiros. "Variabilidade genética do cowpea severe mosaic virus (cpsmv) e cowpea aphid-borne mosaic virus (cabmv) no Brasil." reponame:Repositório Institucional da UnB, 2012. http://repositorio.unb.br/handle/10482/11116.

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Tese (Doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Biologia Celular, 2012.<br>Submitted by Jaqueline Ferreira de Souza (jaquefs.braz@gmail.com) on 2012-09-06T13:53:56Z No. of bitstreams: 1 2012_EmanuelFelipeMedeirosAbreu.pdf: 2453482 bytes, checksum: 74193cbd52cf84b634766a3d957e9018 (MD5)<br>Approved for entry into archive by Jaqueline Ferreira de Souza(jaquefs.braz@gmail.com) on 2012-09-06T13:54:23Z (GMT) No. of bitstreams: 1 2012_EmanuelFelipeMedeirosAbreu.pdf: 2453482 bytes, checksum: 74193cbd52cf84b634766a3d957e9018 (MD5)<br>Made available in DSpac

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10

Letsoalo, Isaac Motsoeng. "Evaluation of introduced cowpea breeding lines for Aphid (Aphis Craccivora) and bruchid (Callosobruchus Rhodensiansus) resistance in South Africa." Thesis, University of Limpopo, 2015. http://hdl.handle.net/10386/1775.

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11

Uriyo, Maria. "Effect of germination and drying on enzyme activity in sorghum and cowpeas." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-07102009-040342/.

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12

Adeyemi, Samson Adebowale. "Evaluation of the possible application of cowpea genotypes in the farming systems of the Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/d1007539.

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Characterization studies on the genetic diversity among cultivated cowpea (Vigna unguiculata (L.) varieties are valuable tools to optimize the use of available genetic resources by farmers, local communities, researchers and breeders. Eight cowpea (Vigna unguiculata (L.) genotypes ( Vegetable cowpea, Ivory grey, Okhalweni, Fahari, Fahari dark, 97K-1069-8, IT93K-73h, and 129-3) were subjected to molecular, morphological and agronomical characterization. DNA amplification fingerprinting markers were used to evaluate the genetic diversity among the eight genotypes. Nine random arbitrary primers w

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13

Blade, Stanford F. (Stanford Fred). "Evaluation of cowpea lines in Nigerian cropping systems." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70310.

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The primary hypothesis of this research was that improved cowpea genotypes (selected under sole crop) could yield well in several Nigerian cropping systems, and that there were cowpea characteristics that improved overall system productivity. Cowpea lines were identified which were high yielding and stable in several management systems. Practices such as not applying insecticide and intercropping both reduced cowpea grain yield significantly. Land equivalent ratios were greater than one for all tested intercrop systems: cassava-cowpea (1.21-2.35), maize-cowpea (1.31-4.23), maize-cassava-cowpea

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14

Ravhuhali, Khuliso Emmanuel. "Effects of cowpea cultivar supplementation on productivity of Pedi goat and Dorper sheep fed Ad Libitum buffalo grass." Thesis, University of Limpopo, 2010. http://hdl.handle.net/10386/590.

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Thesis (M.Sc. (Agriculture)) --University of Limpopo, 2010<br>Two studies were carried out to investigate the effect of cowpea cultivar supplementation on productivity of Pedi goats and Doper sheep fed ad libitum buffalo grass. Experiment 1 investigated the effect of cowpea cultivars supplementation on productivity of Pedi goats fed ad libitum buffalo grass hay using twelve goats that were assigned in a completely randomized design. The Pedi goats were fed ad libitum a basal diet of buffalo grass supplemented with four levels each of four cowpea cultivars namely, Pan 311, Red caloona, Black ey

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15

Ndambe, Nzaramba Magnifique. "Inheritance of antioxidant activity and its association with seed coat color in Cowpea (Vigna unguiculata (l.) walp.)." Thesis, Texas A&M University, 2005. http://hdl.handle.net/1969.1/2455.

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Analysis of antioxidant activity (AOA) of entries in the 2002 Regional Southernpea Cooperative Trial revealed not only significant differences among entries, but that entries with pigmented (black and red) seed coats were clustered among the highest, cream types were the lowest, while pinkeye and blackeye types were intermediate. Red colored peas were higher in antioxidant activity than black types. These findings provided strong evidence that compounds responsible for pigmentation were involved in AOA. The objectives of the present investigation were to investigate the inheritance of AOA in c

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16

Ochoa, Luisa 1952. "EFFECT OF GERMINATION, ALKALI TREATMENT AND DRY ROASTING ON THE PROPERTIES OF COWPEA FLOUR." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276418.

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17

Omwenga, George Isanda. "Callus Development and Organogenesis in Cultured Explants of Cowpea (Vigna unguiculata (L.) Walp." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4655/.

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Cowpea, Vigna unguiculata (L.) Walp is an excellent source of protein, vitamins and minerals and a major food crop many parts of Africa. Optimal production levels are hampered by insect pests and diseases. Biotechnological techniques such as tissue culture and genetic engineering can aid in the development of varieties with resistance to insect pests and diseases. The objective of this study was to investigate conditions necessary for the development of a reproducible tissue culture system that can be applied to regenerate transformed cells from culture. The in vitro manipulation of cowpea u

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18

Holness, Claire Louise Lesley. "Isolation and characterisation of mutants of cowpea mosaic virus." Thesis, University of Warwick, 1989. http://wrap.warwick.ac.uk/59381/.

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A nitrous acid-induced, temperature sensitive mutant of cowpea mosaic virus (CPMV) known as 8-14, (Evans 1985, Virology 1985, 141, 275-282), was characterised. The phenotypic defect in 8 -14 was shown not to affect translation of the RNA or the first proteolytic cleavage of the B RNA-encoded polyprotein. The defect is probably at the level of genome replication. The technique of two dimensional RNA fingerprinting showed the mutant genome to be similar to the parental wild-type but did not resolve the genetic alteration(s) specific for the mutation. The mechanism of CPMV translation was investi

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19

Law-Cheung, Linda H. Y. "Antibody specificities : stimulated by cowpea mosaic virus-HIV chimeras." Thesis, University of Warwick, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248828.

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20

Graffham, A. J. "Tempe fermentation as a processing option for African cowpea." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240292.

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21

Reiss, Gesa. "Striga gesnerioides parasitizing cowpea : mechanisms of infection and resistance." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295066.

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22

Ferreira, Antonia DÃbora Camila de Lima. "Black aphid preference to cowpea landraces from Pentecoste, CearÃ." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14777.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Currently the production of cowpea is taking ever greater proportions, and thereby arousing the interest of many producers for this culture. The attack of pests is among factors that affect production, being the black aphid considered key pest. The control of this pest can be accomplished through the use of resistant plants, resistance may occur in cultivars or in landraces. The objective of this study was to compare natural resistance of cowpea landraces genotypes against Aphis craccivora as well as the effects caused in its biolog

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23

Mtchotsa, Lydia. "Drivers of trader participation in bean and cowpea marketing." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16986.

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Master of Agribusiness<br>Department of Agricultural Economics<br>Vincent Amanor-Boadu<br>Beans and cowpeas are considered nutritionally dense and good sources of protein. In this sense, they are considered excellent food in poor households, especially in those that exhibit high levels of malnutrition or under-nutrition. To address food security and nutrition security in poor countries, there has been an increasing interest in encouraging farmers to grow beans and cowpeas. This has spurred research in value chains for these crops in many countries, especially those that do not traditionally

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Sprent, JI, DW Odee, and FD Dakora. "African legumes: a vital but under-utilized resource." Oxford University Press, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001196.

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Abstract Although nodulated legumes have been used by indigenous peoples in Africa for centuries, their full potential has never been realized. With modern technology there is scope for rapid improvement of both plant and microbial germplasm. This review gives examples of some recent developments in the form of case studies; these range from multipurpose human food crops, such as cowpea (Vigna unguiculata (L.) Walp.), through to beverages (teas) that are also income-generating such as rooibos (Aspalathus linearis (Burm. f.) R. Dahlgren, honeybush (Cyclopia Vent. spp.), and the widely used food

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25

Naab, JB, SMB Chimphango, and FD Dakora. "N2 fixation in cowpea plants grown in farmers' fields in the Upper West Region of Ghana, measured using 15N natural abundance." Symbiosis, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001478.

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Abstract Few studies have assessed the levels of symbiotic N nutrition in legumes grown by fanners in Africa. In this study, the shoots of cowpea plants were sampled from 63 farms in 12 villages within 5 districts of the Upper West Region of Ghana, and assessed for growth and symbiotic N nutrition. The data revealed considerable differences in cowpea plant density per m2 , plant growth, 15N natural abundance (OI5N), %Ndfa, and N-fixed among different farms under one village, and between villages under the same district, and between districts in the Upper West Region. In farms where there were

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26

Cleveland, S. Matthew. "HIV-1-specific antibody responses to a plant virus-HIV chimera." Thesis, University of Warwick, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340090.

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27

Farmer, Charmian Alwynne. "William Cowper : writing retirement." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610096.

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28

Nelson, Suzanne Cathleen. "Genotype and cropping system effects on cowpea growth and yield." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186596.

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Genotype X cropping system interactions may complicate the plant breeders' task of increasing crop yields, since selection and improvement in one cropping system may not result in improved performance in a different cropping system. Field experiments were conducted in 1990 and 1991 to examine the effects of cowpea (Vigna unguiculata (L.) Walp.) genotypes and cropping systems on cowpea yield, yield components, biomass, and leaf area. When cowpea was grown in sole crop and in intercrop with pearl millet (Pennisetum americanum (L.) Leeke), a significant genotype X cropping system interaction for

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29

Thuenemann, Eva. "Virus-like particle production using cowpea mosaic virus-based vectors." Thesis, University of East Anglia, 2010. https://ueaeprints.uea.ac.uk/20539/.

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JÃnior, JosÃ Edvar Monteiro. "Biochemical, functional and structural characterization of two cowpea recombinant cystatins." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8391.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>mRNA sequences coding for two cystatins were isolated from leaves of hydroponically growing cowpea plants. The sequences were ligated in the expression vector pET302NT-HIS, which was introduced into Escherichia coli, ArcticExpress (DE3) cells. The expression was induced by addition of 0.5 mM IPTG and the recombinant proteins VuCys1 (Vigna unguiculata one-domain cystatin) and VuCys2 (Vigna unguiculata two-domain cystatin), both fused to an N-terminal 6x-His tag, were purified by homogeneity using an affinity matrix containing Ni2+ i

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Dallali, Ali. "Characteristics of a 38 KD protein induced in cowpea plants following infection with tobacco ringspot virus." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3052168.

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32

Thosago, Setshele Standford. "Response of selected cowpea lines to low soil phosphorus and moisture stress conditions at Ukulima Farm in Limpopo Province." Thesis, University of Limpopo, 2015. http://hdl.handle.net/10386/1585.

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Thesis (M. Sc.(Agronomy)) -- University of Limpopo, 2015<br>Cowpea (Vigna unguiculata L. Walp) is an important grain legume grown in many parts of the world mostly by smallholder (SH) farmers. Low soil phosphorus (P) and drought stress are major constraints to legume production and threaten food security. Root architecture is a spatial configuration of the root system which is influenced by moisture status and P uptake. A field experiment was conducted at Ukulima farm near Modimolle in Waterberg district during 2012/13 summer growing season. The treatments comprised of two levels each fo

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Makoi, JHJR, SBM Chimphango, and FD Dakora. "Effect of legume plant density and mixed culture on symbiotic N2 fixation in five cowpea (Vigna unguiculata L. Walp.) genotypes in South Africa." Symbiosis, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001476.

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Abstract A field experiment involving two plant densities (83,333 and 166,666 plants per hectare), two cropping systems (monoculture and mixed culture) and five cowpea (Vigna unguiculata L. Walp.) genotypes (3 farmer-selected varieties: Bensogla, Sanzie and Omondaw, and 2 breeder-improved cultivars: ITH98-46 and TVuI509) was conducted for two years in 2005 and 2006 at Nietvoorbij (33°54S, 18°14E), Stellenbosch, South Africa, to evaluate the effect of these treatments on the growth and symbiotic performance of cowpea. The results showed that, of the five cowpea genotypes, plant growth and N2 fi

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Belane, AK, and FD Dakora. "Measurement of N, fixation in 30 cowpea (Vigna unguiculata L. Walp.) genotypes under field conditions in Ghana, using the 15N natural abundance technique." Balaban, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001672.

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Abstract In 2005 and 2006, 30 and 15 cowpea genotypes were respectively evaluated for plant growth and symbiotic performance at Manga in Northern Ghana, in order to identify Nz-fixing potential of these cowpea genotypes as source of N for cropping systems. The results showed differences in biomass production by the 30 or 15 cowpea genotypes. In 2005, cultivars Fahari, Mchanganyiko, IT97K-499-39, IT93K-2045-29 and IT84S-2246 produced the most shoot biomass, while Apagbaala, Brown Eye, ITH98-46, Vita 7 and Iron Grey produced the least. Of the 15 genotypes tested in 2006, cv. TVu1l424 produced th

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Mendonca, A. P. A. "Some aspects of the host involvement in cowpea mosaic virus replication." Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370391.

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Ishiyaku, Mohammad Faguji. "Inheritance of time to flowering in cowpea [Vigna unguiculata (L.) Walp]." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360060.

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Silva, Felipe Barreto da. "Efeitos do carlavírus Cowpea mild mottle virus em cultivares de soja /." Botucatu, 2019. http://hdl.handle.net/11449/183629.

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Orientador: Renate Krause Sakate<br>Coorientador: Cristiane Müller<br>Banca: Marcelo Agenor Pavan<br>Banca: Jorge Alberto Marques Rezende<br>Resumo: Doenças causadas por vírus são importantes fatores contrários a produção de soja. Entre elas, a doença da necrose da haste causada pelo Cowpea mild mottle virus (CPMMV) e transmitida pela mosca-branca Bemisia tabaci já foi observada em todas as principais regiões produtoras de soja do Brasil e a queima do broto (Tobacco streak virus - TSV) que têm ocorrência mais restrita nas regiões dos Estados do Paraná e de São Paulo. Os impactos causados por a

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Makoi, Joachim HJR. "Seed flavonoid concentration in cowpea genotypes and the effect of plant density on growth, N₂ fixation and rhizosphere phosphatases and grain yield of cowpea intercropped with sorghum." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/727.

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Thesis (DTech (Faculty of Applied Sciences)--Cape Peninsula University of Technology, 2009<br>A 3-factorial experiment involving two cowpea densities (83,000 and 167,000 plants.ha-1), two cropping systems (i.e. monoculture and mixed culture) and five cowpea genotypes (i.e. three farmer-selected cultivars, Bensogla, Sanzie and Omondaw and two improved varieties, ITH98-46 and TVu1509) was conducted in the field for two consecutive years in 2005 and 2006. The aim was to assess the effect of plant density, cropping system and cowpea genotypes on: (i) chlorophyll and gas-exchange, (ii) rhizosp

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Ofuya, Z. M. "Nutritional significance of carbohydrate components of cowpeas." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384308.

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Thobatsi, Jacob Thobatsi. "Growth and yield responses of maize (Zea mays L.) and cowpea (Vigna unguiculata L.) in an intercropping system." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-10122009-184005.

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Bergman, Christine Joy 1960. "Soft wheat pasta supplemented with cowpea: Nutritional, sensory and cooking quality studies." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/291602.

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Pasta was produced from soft wheat supplemented with cowpea. Acid detergent fiber values increased from 0.4% in the soft wheat pasta (SWP) to 1.1% in the 30% cowpea pasta (CP). Cowpea supplementation provided an increase in total and available lysine from 42 to 113% and 39 to 117%, respectively. Chemical scores for preschool children increased from 56 in the SWP to 89 in the 30% CP. For school children the 20% CP provided a score of 102. The in vitro protein digestibility (IVPD) of cowpea was lower than that of soft wheat; as a result cowpea reduced the IVPD of SWP from 84% to a value of 78% f

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Sainsbury, Frank. "Development of cowpea mosaic virus-based vectors for molecular farming in plants." Thesis, University of East Anglia, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502194.

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Expression vectors based on the bipartite Cowpea Mosaic Virus (CPMV) have been investigated for use in molecular farming in plants. Agroinfiltration into Nicotiana benthamiana of two full-length RNA-2 constructs containing different marker genes in the presence of RNA-1 showed that two foreign proteins can be efficiently expressed within the same cell in inoculated tissue. However, segregation of the RNA-2 molecules was observed upon systemic spread of the recombinant viruses. Thus efficient assembly of heteromeric proteins is likely to occur only in inoculated tissue. Therefore vectors based

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Ngugi, Eliud Chege Kahiu. "The genetics of carbon isotope discrimination in cowpea (Vigna unguiculata L. Walp)." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239598.

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Silva, Weslley Costa. "Answers of cowpea to different irrigation with water saline and doses biofertilizer." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17328.

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nÃo hÃ<br>The objective of this study was to evaluate the responses of cowpea (Vigna Unguicullata L. Walp) produced under the effect of different irrigation with saline water and liquid biofertilizer doses. Held this experiment in an experimental area Federal Institute of CearÃ, located in the municipality of Umirim - CE with the cultivar of cowpea âBRS Pujanteâ. The experiment obeyed in a randomized block, in a split plot, totaling sixteen treatments and four repetitions. The plot consisted application of four different irrigation water with saline water (75; 100; 125 and 150% of crop evapotr

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JÃnior, JosÃ Maria TupinambÃ da Silva. "Standard colonization arbuscular mycorrhizal in plants barabdos cherry, corn and cowpea bean." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17281.

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nÃo hÃ<br>Improve technologies that seek to reduce the use of phosphate fertilizers is essential, considering that most Brazilian soils have low availability of phosphorus (P), ultimately limit the growth of plants and generating a high dependence of phosphate fertilizers. The use of microorganisms as the arbuscular mycorrhizal fungi (AMF) which are associated with the majority of plant species is now a viable alternative, mainly by beneficial effects of these fungi for plant growth such as increased absorption of nutrient, especially, P. Association between AMF and fruit or annual plants can

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Wright, Andrew William. "Fecundity and oviposition behaviour of the cowpea seed beetle, Callosobruchus maculatus (Fabricius)." Thesis, Royal Holloway, University of London, 1986. http://repository.royalholloway.ac.uk/items/edf20917-cbba-4f3b-b9e0-a68a60e3ed74/1/.

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The reproductive biology of three strains of Callosobruchus maculatus F. (Coleoptera: Bruchidae), the cowpea-seed beetle, was studied. This beetle is a serious pest of stored legume seeds in the semi-arid tropics. As females aged, energy reserves were depleted and aspects of this decline were related to the number of eggs laid in order to explain the observed daily egg laying pattern of C. macuiatus. Various factors affected the fecundity of females. The initial adult weight of females showed a strong positive relationship with the number of eggs laid. Substances, which could be extracted from

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Profit, Michael Alastair. "Bionomic variation, oviposition strategy and larval competition in West African Bruchid populations." Thesis, Royal Holloway, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266395.

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MOHAMED, IBRAHIM ELBASHIR. "EFFECTS OF PRE-PLANT APPLICATION OF NITROGEN FERTILIZER ON SYMBIOTIC NITROGEN FIXATION AND YIELD OF COWPEAS (VIGNA UNGUICULATA (L.) WALP.)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187957.

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The responses of two cowpea (Vigna unguiculata (L.) Walp.) cultivars inoculated with granular inoculum (a mixture of rhizobia) at different levels of applied nitrogen were evaluated. California Blackeye 5 (Ca5) and Knuckle Purple Hull (KPH) cowpeas were examined under field conditions for percent nodulation, nodule number, and nodule mass per plant, and nitrogenase activity at various times during the 1983 and 1984 growing seasons. Data were also obtained for shoot and root dry weights, seed yield, and protein content. Significant differences between inoculated and uninoculated plots were foun

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Neto, Manoel C., and Paul G. Bartels. "Dry Matter Partitioning of Cowpea (Vigna Unguiculata (L.) Walp.) Under Water Deficit Conditions." College of Agriculture, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/214526.

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Water Stress caused reduction of seed yield in cowpea plants by decreasing total biomass and photosynthesis. The source leaf, pod and seed water potential of stressed cowpea were lower than water potential in non-stressed plants. No differences in water potential and turgor were observed between pod walls and seed of cowpea plants. Partitioning of the total above ground dry matter was similar for both stressed and nonstressed cowpea plants. Photosynthetic rates of single leaves from cowpea were greater for nonstressed than stressed plants. The duration of seed growth of cowpea was not differen

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Ahmed, Mohamed Abdullah. "Investigation of effect of glycation and denaturation on functional properties of cowpea proteins." Thesis, Heriot-Watt University, 2013. http://hdl.handle.net/10399/2741.

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There is increasing demand in the European Union for vegetable protein used in animal feed as well as for use in human foods such as preparation of culinary sauces, mayonnaise and baking. Millions of tons of soy proteins are imported into the European Union and the price is increasing annually. A market replacement share by a similar vegetable protein by a few percent represents tens of millions of euros. Cowpea (Vigna unguiculata L. Walp) is a well-established crop around the world and the production of this grain has been increasing in Africa. Yet the exploitation of the cowpea proteins as a

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