Enyi , B.A.C. (1975) Effects of defoliation on growth and yield in groundnut (Arachis hypogea), cowpeas (Vigna unguiculata), soyabean (Glycine max) and green gram (Vigna aurens). Annals of Applied Biology, 79 (1). pp. 55-66.
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Abstract
Defoliation reduced dry weight of stems, pods and seeds and size of individual seeds in all 4 crops and the dry weight of flowering inflorescence stalk in cowpea and green gram [Phaseolus aureus = Vigna radiata]. The adverse effect of defoliation was more pronounced when defoliation was complete than when half the leaves were removed. The greatest reduction in seed yield occurred when the plants were defoliated during the early pod stage; the reduction was 59.7, 79.0, 86.4 and 95.3% in groundnut, cowpea, soyabean and green gram, respectively, when completely defoliated at this stage and 43.3, 14.0, 42.4 and 46.1%, respectively, when half defoliated. Results showed that assimilates produced by the leaves during the early stages of growth were used in the growth of stems and leaves, but that assimilates produced during the reproductive stage were used mainly for the growth of the pods. In groundnut, pod number and seed weight were positively correlated with stem weight. Defoliation appeared to reduce pod number by depressing the growth of stems and this in turn reduced the number of flowering nodes
| Item Type: | Article |
|---|---|
| Additional Information: | SNNigam Collection |
| Author Affiliation: | Faculty of Agriculture, Dar es Salaam University, Morogoro, Tanzania. |
| Subjects: | Plant Production |
| Divisions: | Groundnut |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 07 Jul 2013 14:27 |
| Last Modified: | 08 Jul 2013 04:39 |
| Official URL: | http://dx.doi.org/10.1111/j.1744-7348.1975.tb01522... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10906 |
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