Effect of foliar spray with B - vitamins (B₁ B₆ and B₁₂) on growth and seed yield of cowpea plants [electronic resource].

Includes references.

Two field as well as pots experiments were carried out during two consecutive summer growing seasons of 1996 and 1997 at private Experimental Farm, Diarb Negm, Sharkia Governorate, to study the effect of spray with B- vitamins (B₁ B₆ and B₁₂) and their combinations at two levels; i.e., 50 and 100 ppm, each on growth and seed yield of cowpea plants. Foliar spray of cowpea plants with vitamin B₁ B₆ and B₁₂ as single or in combinations at 50 and 100 ppm, each, of them, except Vit. B₁₂ at 100 ppm singly, significantly enhanced root and nodules characters; i.e., total root length, number of branches/root, both nodules numbers and weight/plant and nitrogen fixation activity expressed as acetylene reduction. Application of B--vitamins (B₁ B₆ and B₁₂) at the abovementioned concentrations to cowpea plants significantly increased dry weight of different plant organs, leaf pigments, (chlorophyll a, band carotenoids), number of pods/plant and dry seed yield per plant as well as per feddan compared to check.

Summary in Arabic.

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