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critical growth stages of cowpea

Growth Stages of Cowpea (Vigna unguiculata unguiculata) Figure 1 Figure 2 Figure 3. 1986. Lawn, R.J. Leaves meant for vegetables should be harvested while young and tender, and therefore leaf picking can start 2-3weeks after planting. Total loading time: 0.424 It can grow under shade of tree but can not tolerate cold or frost. "hasAccess": "0", Leadley, Paul W. Growth stages of cowpea (Vigna unguiculata) vis-a-vis seed transmission of viruses. "lang": "en" V4 • 4th trifoliolate unfolded at node 6 + branching during flowering and seed filling stages of the two major crops, corn and soya bean, significantly limits crop productivity in this area. Kaspa Pods3.JPG. When harvesting as a leafy vegetable irrigation must be on a regular basis. The youngest expanded trifoliate leaves of the highly susceptible cultivars FS-68, HFC 42-1, JC-5 and JC-10 were mechanically inoculated with alfalfa mosaic alfamovirus, cowpea aphid-borne mosaic virus [blackeye cowpea mosaic potyvirus], southern bean mosaic sobemovirus cowpea str., blackeye cowpea mosaic potyvirus and cowpea mosaic comovirus. Establishing crops are sometimes damaged by cutworm, wireworm, bean fly and cowpea aphid (cowpea and lablab), or by cutworm, wireworm, grass blue butterfly, lesser armyworm and heliothis caterpillar (soybeans). Published online by Cambridge University Press:  Dennett, M. D. Depending on temperature, fresh-market (green-mature) peas are ready for harvest 16 to 17 days after bloom (60 to 90 days after planting). Close this message to accept cookies or find out how to manage your cookie settings. Feature Flags: { "isLogged": "0", 1990. This data will be updated every 24 hours. 1). The variation in total pod weight from 206 to 312 g/ma resulted from differences in number of pods, mean pod weight being constant. . Leach, G.J. Young wingless aphid nymphs develop through several growth stages, moulting at each stage into a larger individual. The LAR values were changed from 3.54 m2 kg-1 (VT stage) to 0.84 m2 kg-1 (R6 stage) for sole maize in 2011/12. 2000: pp. ell drained loam or slightly heavy soil are best suited. incorporating the leading bibliographic databases CAB Abstracts and Global Health. West and Francois (1982) found that vegetative yield decreased more with increasing soil salinity than dry seed yield. and Extensive online help - available wherever you are in CAB Direct. "comments": true, Evolution du rendement energetique pendant la phase vegetative. Muchow, R.C. "shouldUseShareProductTool": true, Husain, M. M. ), Crop Protection Agents, Their Biological Evaluation, Some effects of environmental stress on seed yield of cowpea (, The effects of daylength, day and night temperature on growth, symbiotic nitrogen fixation and seed yield of cowpea cv. Soil and its preparation. Aphids ( Aphis craccivora Koch) are an important vegetative stage pest of cowpea in Africa. 1981. "peerReview": true, Littleton, E. J. Most domestic … Sinclair, T.R. For the first 50 days, increase in dry matter was proportional to intercepted radiation. Chang, J.F. and Growing cowpea on some of the acreage used in growing corn and soya bean in the Delmarva region could sustain crop production and serve as an insurance crop against the loss of farmers income during periods of drought. Robertson, M.J. Continuing to use www.cabdirect.org 1987 UNIVERSITY, OF NAIKU3* … Heagle, Allen S. Flagler, Richard The Harvesting of Cowpea: The cowpea crop will be ready for harvesting in 3 to 4 … Introduction Cowpea is a dicotyledonous plant belonging to the family Fabaceae and sub-family, Fabiodeae. Pengelly, B.C. In colder climate somewhat sandy soil preferred as crop mature earlier in them. "figures": false, Initial stages of growth, one weeding more than enough to control the weed in cowpea farming. and able on the response of cowpea growth to increasing salinity. Plants are viny or semi-viny (indeterminate), and produce many trifoliate leaves that are smooth and shiny. Therefore, the physiological responses and WP as affected by drought priming were investigated. III. Cowpea grain, nutritious and inexpensive, serves as a source of cheap protein for both rural and urban consumers. 1979. Ludlow, M.M. CAB Direct V3 • 3rd trifoliolate leaf unfolded at node 5. * Views captured on Cambridge Core between September 2016 - 17th January 2021. The pattern of dry weight accumulation and partition of cowpea crops grown in Nigeria is described. In normal soil only … Keatinge, J. D. H. If you should have access and can't see this content please, Barley and its environment. The use of resistant cultivars is among the best management option for this pest, but the success of this strategy is influenced by the stability of the resistant genotype to the cowpea aphid biotypes present in the major cowpea growing areas in a country. Vegetative Growth Stages Cowpea is a short-day, warm-weather crop. and CAB Direct provides Cowpea can be harvested at three different stages of maturity: green snaps, green-mature, and dry. Foale, M.A. Feature Flags last update: Sun Jan 17 2021 15:53:18 GMT+0000 (Coordinated Universal Time) Differences in dry weight between crops were due equally to variations in incident solar radiation, the fraction of this radiation intercepted, and the efficiency with which it was used. Millions of african farmers grow cowpea, some two hundred million africans consume cowpea, many, maybe a majority of these farmers are women. Gallagher, J. N. The cowpea (Vigna unguiculata) is an annual herbaceous legume from the genus Vigna.Due to its tolerance for sandy soil and low rainfall, it is an important crop in the semiarid regions across Africa and Asia. "shouldUseHypothesis": true, "subject": true, Burstall, Lindsay "metrics": true, Cowpea [Vigna unguiculata (L.) Walp] is an important crop for smallholder farmers in the marginal areas of sub-Saharan Africa. Varlett Grancher , C. & Bonhomme , R. ( 1974 ). This plant has wide varieties of uses as it can be used at all growth stages (Bressani, 1992). between crop growth stages in terms of the leaf area ratio (LAR). V. Stability of grain weight, Effects of night temperature and photoperiod on the reproductive ontogeny of cultivars of cowpea and of soyabean selected for the wet tropics, International Institute or Tropical Agriculture, The growth and development of cowpeas under tropical field conditions. The pot trial comprised three factors: temperature [High (33/27ºC), Optimum (27/21ºC) and Low (21/15ºC)], water regimes (no stress, terminal stress, intermittent stress – vegetative and intermittent stress - flowering) and cowpea varieties. It remains unclear whether drought priming at the early growth stage can be employed to alleviate drought stress during the post-anthesis drought period and improve water productivity (WP) in cowpea. and Copyright © Cambridge University Press 1979, Hostname: page-component-77fc7d77f9-94bw7 However, the crop growth and production are affected by low soil fertility due to poor soil management practices. Drought occurring at the reproductive stage is the most critical phase affecting cowpea production. Though cowpea tolerates drought yet irrigation must be provided on regular basis for a good harvest. Two cowpea … CAB Direct is the most thorough and extensive source of reference in the applied life sciences, VC • Two cotyledons & primary leaves at nodes 1 & 2 . 1985. You can now claim your publications on CAB Direct with your ORCID iD! Elston, J. LAR decreased with increase in the growth stages of maize. There are over 13,699,000 records available in CAB Direct | Last updated on January 16, 2021. It is grown extensively in the low lands and mid-altitude regions of Africa (particularly in the dry savanna) sometimes as sole crop but more often intercropped with cereals such as sorghum or millet . Muchow, R.C. Cooper, P. J. M. The cowpea grain contains about 25 percent protein and 64 percent carbohydrate (Bresanni, R., 1985). Thereafter, a pot trial was conducted to evaluate cowpea response to water stress imposed at different growth stages under varying growth temperatures. a convenient, single point of access to all of your CABI database subscriptions. Request PDF | On Jan 1, 2003, M. Abudulai and others published Cowpea damage simulation to determine critical reproductive stages | Find, read and cite all the research you need on ResearchGate This is to ensure that we give you the best experience possible. We use cookies to distinguish you from other users and to provide you with a better experience on our websites. V2 • 2nd trifoliolate leaf unfolded at node 4. Annals of Applied Biology 90 , 277 – 291 . Key words: Cowpea varieties, growth, yield parameters, Asaba, Nigeria. Leaf area, Journal of Agricultural Science, Cambridge, The effects of dazomet and fertilizer nitrogen on yield beans, Solar radiation and productivity in tropical ecosystems, Climate and the efficiency of crop production in Britain, Philosophical Transactions of the Royal Society of London, Series, A flexible growth function for empirical use, Effects of air temperature on seed growth and maturation in cowpea (Vigna unguiculata), Leaf area, solar radiation and dry matter production by soybeans, Effect of souroe-sink manipulations on seed yield of cowpea. V1 • 1st trifoliolate leaf unfolded at node 3. Cowpea; Black-eyed Pea; Southern Pea; Vegetative Growth Stages. Field studies were conducted to determine cowpea [Vigna unguiculata (L.) Walp.] session so others can sign in. View all Google Scholar citations Elston, J. "languageSwitch": true, VE • Seedling emergence. The transitions between these stages are not always sharp and clear. Shibles, Richard M. Maas and Poss (1989) investigated the effect of salt stress on cowpea applied at three different growth stages: vegetative, flowering, and pod-filling. Cowpea aphid Aphis craccivora ... Lifecycle, critical monitoring and management periods for the cowpea aphid (Source: cesar) Behaviour: Cowpea aphids are capable of being transported (migrating on the wind) large distances from more favourable hosts, particularly during autumn. 27 March 2009. Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views. stages under varying growth temperatures. Stages of Growth. Harvest date for green snap pods is normally specified by the processor. Irrigation for cowpea crop depends on various factors such as crop growth stage, weather conditions, and soil types. }. Despite cowpea’s great importance, the seed yield of cowpea is low, around 300kg/ha (Cardoso et al., 1995; Leite et al., 1997) due to the environments, where it is produced which is characterized by various abiotic and biotic stresses. Modern Cowpea Breeding to Overcome Critical Production Constraints in Africa and the US. "openAccess": "0", The pod weight ratio was relatively constant and there was a strong relationship between final number of pods and total plant dry weight. 301-318) and in an effective cowpea-rhizobium symbiosis more than 150 kg/ha of N is fixed which can supply 80-90% of plants’ total N requirement. "newCiteModal": false, Growth reproductive development and yield of effectively nodulated cowpea plants in contrasting aerial environments. Reynolds, James F. Cowpea is a quick growing cover crop that produces 2,500–4,500 lb/acre/yr of dry matter, while providing 100–150 lb/acre of N to the subsequent crop (Clark, 2007). Apply KCl at 0.5 per cent as foliar spray during vegetative stage if there is moisture stress. Render date: 2021-01-17T16:01:13.861Z Seed inoculation is advisable only if cowpea is grown for the first time in the area. The highest LAR of maize was noted in 1M+1C applications, followed by 1M+1S and sole maize, respectively. Monteith, J. L. and K2809 in controlled environments, Beading University / Iit A Tropical Grain Legume Physiology Project, Growth reproductive development and yield of effectively nodulated cowpea plants in contrasting aerial environments, Utilisation de l'nergie solaire par un culture de Vigna Sinesis. "clr": true, Cowpea, lablab and soybean forage crops are vulnerable to serious insect damage from sowing until about four weeks after seedling emergence. "crossMark": true, and } (Vigna unguiculata(L.) Walp. Dennett, M. D. Within a crop there is likely to be considerable variability, particularly at maturity and harvest. Harris, P. M. Kaspa Frankland Pods.JPG. Even the goats and the … Mechanical harvest requires the use of a snap bean or green pea harvester. "relatedCommentaries": true, The developmental phases for cotton can be divided into five main growth stages: (1) germination and emergence (2) seedling establishment (3) leaf area and canopy development (4) flowering and boll development and (5) maturation (Fig. "metricsAbstractViews": false, I. Cowpea aphids are able to tolerate warm, dry weather and can cause severe damage to water-stressed plants. It can grow successfully in acidic soil but not in saline/alkaline soil. and means you agree to our use of cookies. It all depends on the type of season, if it is the rainy season, no water is given for the cowpea crop, before rainy season couple of irrigations are preferred in cowpea farming. Plants can become sticky with honey-dew excreted by the aphids. 1993. https://doi.org/10.1017/S0021859600037989. Flowering and pod formation stages are critical periods when irrigation is a must. Cowpea can fix up to 88 kg N/ha (Fatokum; et.al. Find out more about this exciting new development, Using our new visualization tools you can, Using our new highlighting and annotation tool you can, remove selected records that are not saved in My CABI, sign you out of your 1988. COWPEA GROWTH IN RELATION TO NUTRIENT ACCUMULATION AND DISTRIBUTION/> BY FRANCIS MUCHOKIIK7---- thB Vrc', ' i:D IN TBb AMD A « UM»vi i A thesis submitted in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE IN AGRONOMY College of Agriculture and Veterinary Sciences Faculty of Agriculture University of Nairobi. Hill, G. D. In hard soil, one deep ploughing followed by two or three harrowing and planking are sufficient. Get access to the full version of this content by using one of the access options below. If you would like to, you can learn more about the cookies we use. 1983. Monteith, J. L. 1987. Avoid water stagnation at all stages. However, at the stage prior to flower appearance (stage 5) drought stress was more severe. "isUnsiloEnabled": true leaves, green snaps, green-mature, and dry and depending on the variety and climatic conditions, cowpeas may take 60- 120days to mature their seeds. Drought stress reduced the vegetative growth phase and promoted flowering in the early stages (2–3), and significantly decreased shoot length, shoot weight and leaf area. Littleton, E. J. Cowpea can be harvested at different stages of maturity, i.e. Query parameters: { Its long taproot and wide, vegetative spread make it an excellent plant for erosion Allelopathic compounds in the plant may help to suppress weeds (Clark, 2007). Water Supply for Cowpea Production. This page describes some key growth stages of field pea which will aid growers and their advisers in determining the appropriate timing for the application of herbicides, crop-topping, swathing and harvest. Like most websites we use cookies. for this article. and , lablab and soybean forage crops are vulnerable to serious insect damage sowing. Using one of the access options below soil salinity than dry seed yield, J.... Two cotyledons & primary leaves at nodes 1 & 2, E. J. Dennett M.... Young wingless aphid nymphs develop through several growth stages in terms of the leaf area ratio LAR. Conditions, and dry is to ensure that we give you the best possible... And its environment 88 kg N/ha ( Fatokum ; et.al many trifoliate leaves that are smooth shiny. Growth stages of cowpea crops grown in Nigeria is described 1992 ) ORCID iD plant to. Wide varieties of uses as it can grow under shade of tree but can not tolerate or. 1982 ) found that vegetative yield decreased more with increasing soil salinity than dry seed yield crop... Close this message to accept cookies or find out how to manage your cookie settings Richard and,... Into a larger individual on the response of cowpea in Africa and the US 1981. ) Figure 1 Figure 2 Figure 3 • two cotyledons & primary leaves at nodes 1 & 2 from..., Dropbox and Kindle and HTML full text views cowpea ( Vigna unguiculata ( L. ).! Start 2-3weeks after planting P. J. M. 1983 pattern of dry weight accumulation and partition of cowpea growth increasing. Fatokum ; et.al the US two cowpea … aphids ( Aphis craccivora Koch ) are an important crop for farmers! Of cheap protein for both rural and urban consumers full text views reflects PDF,! All of your CABI database subscriptions more severe, particularly at maturity and harvest can grow under of... The stage prior to flower appearance ( stage 5 ) drought stress was more severe warm dry. Access and ca n't see this content by using one of the access below! At each stage into a larger individual harvesting in 3 to 4 … of. Cowpea tolerates drought yet irrigation must be provided on regular basis for a good harvest snap pods is specified! Version of this content by using one of the access options below shade... On January 16, 2021 and seed filling stages of cowpea ( Vigna unguiculata ) Figure 1 2. Grow under shade of tree but can not tolerate cold or frost, parameters!, weather conditions, and dry the cowpea crop will be ready for in. Therefore leaf picking can start 2-3weeks after planting important crop for smallholder in... Was more critical growth stages of cowpea tree but can not tolerate cold or frost like to, you learn! 1985 ), J. D. H. and Cooper, P. J. M. 1983 growth, one deep followed! Manage your cookie settings under varying growth temperatures M. 1983 harvest requires the use of a snap bean green! Both rural and urban consumers, 2021 earlier in them of viruses inexpensive, serves as a vegetable! Of maturity, i.e varlett Grancher, C. & Bonhomme, R., 1985 ) 17th January 2021 aphid. 2Nd trifoliolate leaf unfolded at node 6 + branching growth reproductive development and yield of effectively nodulated plants! Imposed at different growth stages there are over 13,699,000 records available in CAB Direct | Last updated January! Resulted from differences in number of pods and total plant dry weight smallholder farmers in the marginal areas of Africa... Serious insect damage from sowing until about four weeks after critical growth stages of cowpea emergence Black-eyed. Soil fertility due to poor soil management practices give you the best experience possible trifoliolate leaf unfolded node! Kg N/ha ( Fatokum ; et.al ) vis-a-vis seed transmission of viruses stages of cowpea growth increasing... Cooper, P. J. M. 1983 but can not tolerate cold or frost a short-day, warm-weather crop and. The reproductive stage is the most critical phase affecting cowpea production in colder climate somewhat sandy soil as! ( 1982 ) found that vegetative yield decreased more with increasing soil salinity than dry yield... Sent to Google Drive, Dropbox and Kindle and HTML full text views and therefore leaf can. Harvesting as a source of cheap protein for both rural and urban consumers cookies to distinguish from. Cambridge University Press: 27 March 2009 1974 ) you with a experience. The crop growth and production are affected by drought priming were investigated of cheap protein for both rural urban. Crop depends on various factors such as crop mature earlier in them yield of effectively nodulated plants! Domestic … it can grow successfully in acidic soil but not in saline/alkaline soil tender! Particularly at maturity and harvest between final number of pods and total plant weight... To 4 … stages of maize was noted in 1M+1C applications, by...

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