Introduction Cowpea is a dicotyledonous plant belonging to the family Fabaceae and sub-family, Fabiodeae. VC • Two cotyledons & primary leaves at nodes 1 & 2 . able on the response of cowpea growth to increasing salinity. 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. Even the goats and the … This data will be updated every 24 hours. CAB Direct is the most thorough and extensive source of reference in the applied life sciences,
It can grow under shade of tree but can not tolerate cold or frost. Littleton, E. J. Cowpea can be harvested at three different stages of maturity: green snaps, green-mature, and dry. Thereafter, a pot trial was conducted to evaluate cowpea response to water stress imposed at different growth stages under varying growth temperatures. 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). Gallagher, J. N. "crossMark": true, 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. Flowering and pod formation stages are critical periods when irrigation is a must. Foale, M.A. Chang, J.F. "clr": true, In hard soil, one deep ploughing followed by two or three harrowing and planking are sufficient. and Soil and its preparation. Initial stages of growth, one weeding more than enough to control the weed in cowpea farming. Total loading time: 0.424 Annals of Applied Biology 90 , 277 – 291 . 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 However, the crop growth and production are affected by low soil fertility due to poor soil management practices. In normal soil only … It can grow successfully in acidic soil but not in saline/alkaline soil. Monteith, J. L. This plant has wide varieties of uses as it can be used at all growth stages (Bressani, 1992). 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. Copyright © Cambridge University Press 1979, Hostname: page-component-77fc7d77f9-94bw7 Lawn, R.J. 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. . Cowpea grain, nutritious and inexpensive, serves as a source of cheap protein for both rural and urban consumers. However, at the stage prior to flower appearance (stage 5) drought stress was more severe. 1993. https://doi.org/10.1017/S0021859600037989. V1 • 1st trifoliolate leaf unfolded at node 3. Elston, J. and Though cowpea tolerates drought yet irrigation must be provided on regular basis for a good harvest. Keatinge, J. D. H. Seed inoculation is advisable only if cowpea is grown for the first time in the area. CAB Direct
Drought occurring at the reproductive stage is the most critical phase affecting cowpea production. Reynolds, James F. View all Google Scholar citations Cowpea can fix up to 88 kg N/ha (Fatokum; et.al. Ludlow, M.M. Leaves meant for vegetables should be harvested while young and tender, and therefore leaf picking can start 2-3weeks after planting. Heagle, Allen S. LAR decreased with increase in the growth stages of maize. You can now claim your publications on CAB Direct with your ORCID iD! for this article. Kaspa Frankland Pods.JPG. 1979. 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. III. 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. means you agree to our use of cookies. and Vegetative Growth Stages Cowpea is a short-day, warm-weather crop. 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. When harvesting as a leafy vegetable irrigation must be on a regular basis. 1985. Feature Flags: { The Harvesting of Cowpea: The cowpea crop will be ready for harvesting in 3 to 4 … 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. 1987. 1981. Pengelly, B.C. Leach, G.J. Harris, P. M. * Views captured on Cambridge Core between September 2016 - 17th January 2021. 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. The transitions between these stages are not always sharp and clear. session so others can sign in. Burstall, Lindsay Two cowpea … Littleton, E. J. and If you should have access and can't see this content please, Barley and its environment. Irrigation for cowpea crop depends on various factors such as crop growth stage, weather conditions, and soil types. 2000: pp. leaves, green snaps, green-mature, and dry and depending on the variety and climatic conditions, cowpeas may take 60- 120days to mature their seeds. Feature Flags last update: Sun Jan 17 2021 15:53:18 GMT+0000 (Coordinated Universal Time) We use cookies to distinguish you from other users and to provide you with a better experience on our websites. 1986. Modern Cowpea Breeding to Overcome Critical Production Constraints in Africa and the US. 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). "comments": true, Continuing to use www.cabdirect.org
ell drained loam or slightly heavy soil are best suited. "relatedCommentaries": true, V3 • 3rd trifoliolate leaf unfolded at node 5. Robertson, M.J. Published online by Cambridge University Press: Growth stages of cowpea (Vigna unguiculata) vis-a-vis seed transmission of viruses. 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. This is to ensure that we give you the best experience possible. Husain, M. M. Maas and Poss (1989) investigated the effect of salt stress on cowpea applied at three different growth stages: vegetative, flowering, and pod-filling. 1987 UNIVERSITY, OF NAIKU3* … 1990. }. "openAccess": "0", Evolution du rendement energetique pendant la phase vegetative. 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. Cowpea, lablab and soybean forage crops are vulnerable to serious insect damage from sowing until about four weeks after seedling emergence. Cowpea aphids are able to tolerate warm, dry weather and can cause severe damage to water-stressed plants. Most domestic … "metrics": true, 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 . 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. Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views. In colder climate somewhat sandy soil preferred as crop mature earlier in them. Avoid water stagnation at all stages. The cowpea grain contains about 25 percent protein and 64 percent carbohydrate (Bresanni, R., 1985). Cooper, P. J. M. Depending on temperature, fresh-market (green-mature) peas are ready for harvest 16 to 17 days after bloom (60 to 90 days after planting). and Cowpea; Black-eyed Pea; Southern Pea; Vegetative Growth Stages. Query parameters: { 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. West and Francois (1982) found that vegetative yield decreased more with increasing soil salinity than dry seed yield. 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