critical growth stages of cowpea

2000: pp. Get access to the full version of this content by using one of the access options below. Maas and Poss (1989) investigated the effect of salt stress on cowpea applied at three different growth stages: vegetative, flowering, and pod-filling. 1981. * Views captured on Cambridge Core between September 2016 - 17th January 2021. I. Vegetative Growth Stages Cowpea is a short-day, warm-weather crop. 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. Introduction Cowpea is a dicotyledonous plant belonging to the family Fabaceae and sub-family, Fabiodeae. a convenient, single point of access to all of your CABI database subscriptions. Close this message to accept cookies or find out how to manage your cookie settings. Drought occurring at the reproductive stage is the most critical phase affecting cowpea production. 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 Kaspa Pods3.JPG. "newCiteModal": false, Gallagher, J. N. Two cowpea … means you agree to our use of cookies. Total loading time: 0.424 1986. Husain, M. M. "shouldUseShareProductTool": true, Keatinge, J. D. H. If you would like to, you can learn more about the cookies we use. Modern Cowpea Breeding to Overcome Critical Production Constraints in Africa and the US. Littleton, E. J. V1 • 1st trifoliolate leaf unfolded at node 3. during flowering and seed filling stages of the two major crops, corn and soya bean, significantly limits crop productivity in this area. 1990. Mechanical harvest requires the use of a snap bean or green pea harvester. Soil and its preparation. Feature Flags last update: Sun Jan 17 2021 15:53:18 GMT+0000 (Coordinated Universal Time) Cooper, P. J. M. 1987 UNIVERSITY, OF NAIKU3* … "metrics": true, The highest LAR of maize was noted in 1M+1C applications, followed by 1M+1S and sole maize, respectively. For the first 50 days, increase in dry matter was proportional to intercepted radiation. This is to ensure that we give you the best experience possible. Growth reproductive development and yield of effectively nodulated cowpea plants in contrasting aerial environments. 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. Dennett, M. D. The variation in total pod weight from 206 to 312 g/ma resulted from differences in number of pods, mean pod weight being constant. Avoid water stagnation at all stages. Annals of Applied Biology 90 , 277 – 291 . and V2 • 2nd trifoliolate leaf unfolded at node 4. Kaspa Frankland Pods.JPG. The pattern of dry weight accumulation and partition of cowpea crops grown in Nigeria is described. 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. 1). This data will be updated every 24 hours. Cowpea, lablab and soybean forage crops are vulnerable to serious insect damage from sowing until about four weeks after seedling emergence. Heagle, Allen S. "languageSwitch": true, "isUnsiloEnabled": true 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. 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. "peerReview": true, Plants can become sticky with honey-dew excreted by the aphids. 1979. Shibles, Richard M. Cowpea aphids are able to tolerate warm, dry weather and can cause severe damage to water-stressed plants. "metricsAbstractViews": false, Leach, G.J. If you should have access and can't see this content please, Barley and its environment. "figures": false, Harvest date for green snap pods is normally specified by the processor. Therefore, the physiological responses and WP as affected by drought priming were investigated. Like most websites we use cookies. Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views. VC • Two cotyledons & primary leaves at nodes 1 & 2 . (Vigna unguiculata(L.) Walp. III. ell drained loam or slightly heavy soil are best suited. It can grow under shade of tree but can not tolerate cold or frost. "shouldUseHypothesis": true, Chang, J.F. Muchow, R.C. 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). "comments": true, Cowpea [Vigna unguiculata (L.) Walp] is an important crop for smallholder farmers in the marginal areas of sub-Saharan Africa. session so others can sign in. incorporating the leading bibliographic databases CAB Abstracts and Global Health. Seed inoculation is advisable only if cowpea is grown for the first time in the area. V4 • 4th trifoliolate unfolded at node 6 + branching . Query parameters: { Ludlow, M.M. Published online by Cambridge University Press:  Varlett Grancher , C. & Bonhomme , R. ( 1974 ). Cowpea; Black-eyed Pea; Southern Pea; Vegetative Growth Stages. "openAccess": "0", Harris, P. M. Lawn, R.J. Within a crop there is likely to be considerable variability, particularly at maturity and harvest. Key words: Cowpea varieties, growth, yield parameters, Asaba, Nigeria. 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. Young wingless aphid nymphs develop through several growth stages, moulting at each stage into a larger individual. Initial stages of growth, one weeding more than enough to control the weed in cowpea farming. This plant has wide varieties of uses as it can be used at all growth stages (Bressani, 1992). Aphids ( Aphis craccivora Koch) are an important vegetative stage pest of cowpea in Africa. Monteith, J. L. Apply KCl at 0.5 per cent as foliar spray during vegetative stage if there is moisture stress. Leadley, Paul W. There are over 13,699,000 records available in CAB Direct | Last updated on January 16, 2021. Monteith, J. L. Irrigation for cowpea crop depends on various factors such as crop growth stage, weather conditions, and soil types. 1985. The pod weight ratio was relatively constant and there was a strong relationship between final number of pods and total plant dry weight. Littleton, E. J. However, at the stage prior to flower appearance (stage 5) drought stress was more severe. VE • Seedling emergence. In normal soil only … Feature Flags: { leaves, green snaps, green-mature, and dry and depending on the variety and climatic conditions, cowpeas may take 60- 120days to mature their seeds. 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. for this article. 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. 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 . Cowpea can fix up to 88 kg N/ha (Fatokum; et.al. You can now claim your publications on CAB Direct with your ORCID iD! We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Growth stages of cowpea (Vigna unguiculata) vis-a-vis seed transmission of viruses. and "crossMark": true, "relatedCommentaries": true, "hasAccess": "0", and Extensive online help - available wherever you are in CAB Direct. }. Flagler, Richard 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. 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. Cowpea can be harvested at different stages of maturity, i.e. V3 • 3rd trifoliolate leaf unfolded at node 5. 1987. The Harvesting of Cowpea: The cowpea crop will be ready for harvesting in 3 to 4 … The transitions between these stages are not always sharp and clear. Hill, G. D. "clr": true, The cowpea grain contains about 25 percent protein and 64 percent carbohydrate (Bresanni, R., 1985). Water Supply for Cowpea Production. "lang": "en" Reynolds, James F. Sinclair, T.R. Pengelly, B.C. However, the crop growth and production are affected by low soil fertility due to poor soil management practices. stages under varying growth temperatures. Cowpea grain, nutritious and inexpensive, serves as a source of cheap protein for both rural and urban consumers. 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. Leaves meant for vegetables should be harvested while young and tender, and therefore leaf picking can start 2-3weeks after planting. Depending on temperature, fresh-market (green-mature) peas are ready for harvest 16 to 17 days after bloom (60 to 90 days after planting).
critical growth stages of cowpea 2021