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Journal of Agronomy
  Year: 2007 | Volume: 6 | Issue: 4 | Page No.: 509-517
DOI: 10.3923/ja.2007.509.517
Gibberellic Acid (GA3) Influence on Vegetative Growth, Nodulation and Yield of Cowpea (Vigna unguiculata (L.) Walp.
V. Emongor

Abstract:
Two field experiments were carried out to evaluate the effects of GA3 on the growth and development of cowpea cultivars Blackeye and Tswana. Exogenous application of GA3, 7 days after emergence at 30, 60 or 90 mg L-1 significantly increased cowpea plant height, first node height, leaf area and leaf number/plant, nodulation, plant dry matter accumulation, pod length, pod number/plant, seed number/pod, 100 seed weight, harvest index and seed yield ha-1. Gibberellic acid had no significant effect on cowpea plant senescence. The results of this study suggests that exogenous application of GA3 can be used to modify growth and development of some cowpea varieties.
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How to cite this article:

V. Emongor , 2007. Gibberellic Acid (GA3) Influence on Vegetative Growth, Nodulation and Yield of Cowpea (Vigna unguiculata (L.) Walp.. Journal of Agronomy, 6: 509-517.

DOI: 10.3923/ja.2007.509.517

URL: http://scialert.net/abstract/?doi=ja.2007.509.517

 
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