Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-17T21:15:47.882Z Has data issue: false hasContentIssue false

The growth and development of cowpeas (Vigna unguiculata)under tropical field conditions: 2. Accumulation and partition of dry weight

Published online by Cambridge University Press:  27 March 2009

Summary

The pattern of dry weight accumulation and partition of cowpea crops grown in Nigeria is described. For the first 50 days, increase in dry matter was proportional to intercepted radiation. 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. The variation in total pod weight from 206 to 312 g/ma resulted from differences in number of pods, mean pod weight being constant. The pod weight ratio was relatively constant and there was a strong relationship between final number of pods and total plant dry weight.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1979

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Biscoe, P. V. & Gallagher, J. N. (1977). Weather, dry matter production and yield. In Environmental Effects on Crop Physiology (ed. Landsberg, J. J. and Cutting, C. V.), pp. 75100. London: Academic Press.Google Scholar
Dennett, M. D., Auld, B. A. & Elston, J. (1978).A description of leaf growth in Viciafaba L. Annals of Botany 42, 223232.CrossRefGoogle Scholar
Gallagher, J. N., Biscoe, P. V. & Scott, R. K. (1975). Barley and its environment. V. Stability of grain weight. Journal of Applied Ecology 13, 563583.CrossRefGoogle Scholar
Huxley, P. A. & Summerfield, R. J. (1974). Effects of night temperature and photoperiod on the reproductive ontogeny of cultivars of cowpea and of soyabean selected for the wet tropics. Plant Science Letters 3, 1117.CrossRefGoogle Scholar
International Institute or Tropical Agriculture (1976). Annual report for 1975, p. 112. Ibadan: IITA.Google Scholar
Littleton, E. J., Dennett, M. D., Elston, J. & Monteith, J. L. (1979). The growth and development of cowpeas under tropical field conditions. I. Leaf area. Journal of Agricultural Science, Cambridge 93, 291307.CrossRefGoogle Scholar
McEwan, J., SALT, G. A. & Hornby, D. (1972). The effects of dazomet and fertilizer nitrogen on yield beans. Journal of Agricultural Science, Cambridge 80, 105110.CrossRefGoogle Scholar
Monteith, J. L. (1972). Solar radiation and productivity in tropical ecosystems. Journal of Applied Ecology 9, 747766.CrossRefGoogle Scholar
Monteith, J. L. (1977). Climate and the efficiency of crop production in Britain. Philosophical Transactions of the Royal Society of London, Series b 281, 277294.Google Scholar
Richards, F. J. (1959). A flexible growth function for empirical use. Journal of Experimental Botany 10, 290300.CrossRefGoogle Scholar
Roberts, E. H., Summerfield, R. J., Minchkt, F. R., Stewart, K. A. & Ndungurtt, B. J. (1978). Effects of air temperature on seed growth and maturation in cowpea (Vigna unguiculata). Annals of Applied Biology 90, 437446.CrossRefGoogle Scholar
Shibles, R. M. & Weber, C. R. (1965). Leaf area, solar radiation and dry matter production by soybeans. Crop Science 5, 575577.CrossRefGoogle Scholar
Stewart, K. A., Summerfield, R. J. & Ndunrceu, B. (1978). Effect of souroe-sink manipulations on seed yield of cowpea. (Vigna unguiculata(L.) Walp.). I. Defoliation. Tropical Agriculture (Trinidad) 55, 117—125.Google Scholar
Summeefield, R. J. (1977). Vegetative growth, reproductive ontogeny and seed yield of selected tropical grain legumes. In Crop Protection Agents, Their Biological Evaluation (ed. N”. A, McFarlane), pp. 251271. London: Academic Press.Google Scholar
Summerfield, R. J., Huxley, P. A., Dart, P. G. & Hughes, The Late A. P. (1976). Some effects of environmental stress on seed yield of cowpea (Vigna unguiculata (L.) Walp.) cv. Prima. Plant and Soil'44, 527546.CrossRefGoogle Scholar
Summerfield, R. J., Mlnchin, F. R., Stewart, K. A. & Ndunouku, B. J. (1977). The effects of daylength, day and night temperature on growth, symbiotic nitrogen fixation and seed yield of cowpea cv. K2809 in controlled environments. Beading University / Iit A Tropical Grain Legume Physiology Project. Report no. 16.Google Scholar
Summerfield, R. J., Minchin, F. R., Stewart, K. A. & Ndunguru, B. J. (1978). Growth reproductive development and yield of effectively nodulated cowpea plants in contrasting aerial environments. Annals of Applied Biology 90, 277291.CrossRefGoogle Scholar
Varlett Grancher, C. & Bonhomme, R. (1974). Utilisation de l'nergie solaire par un culture de Vigna Sinesis. III. Evolution du rendement energetique pendant la phase vegetative. Annales Agronomiques 25, 811819.Google Scholar