搜索结果: 1-15 共查到“农学 Cowpea”相关记录48条 . 查询时间(0.157 秒)
Comparative susceptibility of different legume seeds to infestation by cowpea bruchid Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae)
C. maculatus legume seeds oviposition development susceptibility host selection weight loss
2015/3/3
The comparative susceptibility of seeds of ten legumes to infestation by Callosobruchus maculatus was studied in choice and no-choice experiments. Cowpea, garden pea and pigeon pea seeds recorded the ...
Toxicity and spraying schedules of a biopesticide prepared from Piper guineense against two cowpea pests
toxicity Piper guineense extract Maruca vitrata Clavigralla tomentosicollis spray schedules cowpea
2015/3/1
The toxicity of three concentrations (5%, 10% and 20% w/v) and spraying schedules (2, 4 and 6 weekly applications) of an extract from West African black pepper, Piper guineense, for managing two major...
Evaluation of the efficacy of protectants against cowpea bruchids (Callosobruchus maculatus (F.)) on cowpea seeds (Vigna unguiculata (L.) Walp.)
actellic ash black pepper cloves coconut oil damage natural products
2015/3/1
A laboratory experiment of a completely randomised design and replicated four times evaluated the effectiveness to control the bruchid, Callosobruchus maculatus in cowpea by the synthetic insecticide ...
Effect of mahogany Khaya senegalensis seed oil in the control of Callosobruchus maculatus (Fab.) (Coleoptera: Bruchidae) on stored cowpea
K. senegalensis seed oil Pirimiphos methyl E.C. C. maculates cowpea grains bioassay
2015/2/6
Khaya senegalensis seed oil was evaluated for its efficacy in the control of Callosobruchus maculatus on stored cowpea. The oil was extracted locally from the dry K. senegalensis seeds. This was compa...
The sensitivity of flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), on cowpea to three concentrations and spraying schedules of Piper guineense Schum. & Thonn. extracts
control of Megalurothrips sjostedti extracts of Piper guineense Vigna unguiculata application Schedule
2015/2/6
The extracts of pods of West African black pepper, Piper guineense, at 5, 10 and 20% (w/v), were applied at two, four and six weekly schedules to control the legume flower bud thrips, Megalurothrips s...
Field evaluation of extracts of five Nigerian spices for control of post-flowering insect pests of cowpea, Vigna unguiculata (L.) Walp.
spices extracts Maruca vitrata Clavigralla tomentosicollis control cowpea
2015/2/2
The insecticidal efficacy of aqueous extracts of five Nigerian spices (Piper guineense Schum and Thonn., Aframomum melegueta (Roscoe), Xylopia aethiopica (Dunal) A. Rich., Zingiber officinale L. and C...
Influence of phosphorus on the performance of cowpea (Vigna unguiculata (L) Walp.) varieties in the Sudan savanna of Nigeria
Cowpea [Vigna Unguiculata (L.) Walp.] Phosphorus Sudan Savanna Nigeria
2013/3/4
Savanna regions of Nigeria are deficient in nitrogen and phosphorus, which retard the growth and yield of crops. Therefore, a study was conducted in the wet season of 2006 at the Dry Land Teaching and...
ABA-mediated proline synthesis in cowpea leaves exposed to water deficiency and rehydration
Abscisic acid nitrogen metabolism osmotic adjustment
2011/6/29
The aim of this study was (i) to evaluate the impact of water deficit and rehydration on nitrogen compounds and abscisic acid of Vigna unguiculata leaves, and (ii) to investigate the hypothesis that a...
Influence of component crop densities and planting patterns on maize production in dry land maize/cowpea intercropping systems
Planting density planting patterns plant growth
2011/1/11
An experiment was conducted to test the effect of four plant densities (10, 20, 30 and 40,000 plants ha-1) and four planting patterns (1rowM:1rowC, 1rowM:2rowsC, 2rowsM:2rowsC and 2rowsM:4rowsC) on th...
Effect of Intra-row Spacing on Growth and Yield of Three Cowpea (Vigna unguiculata L. Walp.) Varieties under Rainfed
Cowpea intra-row spacing growth yield
2010/11/16
A field experiment was carried out under rainy season 2006-07, at two locations (Kordofan
university farm and Jabal Kordofan ) in Sheikan District, North Kordofan State, Sudan, to investigate the eff...
Effects of Cymbopogon citratus (lemon grass) and Ocimum suave (wild basil) applied as mixed and individual powders on the eggs laid and emergence of adult Callosobruchus maculatus (cowpea bruchids)
Cymbopogon citratus Ocimum suave Callosobruchus maculatus,
2011/1/12
Post harvest losses of cowpea grain are a serious problem, in Africa, as much as 20 - 50% of grain is lost because of infestation due Callosobruchus maculatus (Cowpea bruchids). Plant mixtures contain...
Growth and yield of cassava as influenced by grain cowpea population density in Southeastern Nigeria
Cowpea LAI cassava plant density yield
2011/1/12
The use of some leguminous crops for soil fertility improvement is being promoted for root and tuber crops production in Nigeria. Cowpea has a lot of advantages and is more compatible with cassava tha...
Effect of Water Potentials on Growth and Yield of Cowpea (Vigna Unguiculata [L] Walp)
Water Potentials Growth and Yield of Cowpea
2010/11/15
A field experiment was conducted for two consecutive seasons during 2003/2004 and 2004/2005
in the Demonstration Farm of the Faculty of Agriculture, University of Khartoum at Shambat to study the eff...
Influence of Mulching and Some Micro-nutrients Usage on Soil Temperature, Soil Moisture, Growth and Cowpea Yield
Mulching micro-nutrients soil temperature soil moisture cowpea
2010/11/16
Mulching process can help to improve some soil properties and yield of vegetables crops. Field
studies were conducted over two seasons 2006/2007 under Nile Delta conditions in Egypt to evaluate the e...
Effect of stage and intensity of defoliation on the performance of vegetable cowpea (Vigna unguiculata (L.) Walp)
Defoliation intensity vegetable cowpea vegetative characters
2011/1/12
Field experiments were conducted in 2006 and 2007 on the experimental farm of the Institute for Agricultural Research, Ahmadu Bello University, Samaru, Zaria to determine the effect of stage and inten...