The Role of Vesicular-Arbuscular Mycorrhizas (VAM) In the Phosphorus Nutrition of Cowpea (Vigna Unguiculata (L.) Walp.)

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Date
1991
Authors
Ikombo,B. M.
Edwards,D. G.
Asher,C. J.
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Abstract
An experiment was conducted to establish the role of VAM in the phosphorus nutrition and early growth of cowpea (Vigna unguiculata (L) Walp.) cv. Vita 4 in a podzolic soil (Haplustult). The experiment involved four treatments: (1) plants grown in unsterilized soil adequately supplied with phosphorus (240 kg P ha-I ), (2) plants grown in unsterilized soil with low phosphorus (10 kg P ha-1), (3) and (4) plants grown in methyl bromide sterilized soil with low phosphorus (10 kg P ha-1). Plants in treatments (1), (2) and (3) were inoculated with Bradyrhizobium. A series of harvests was taken from 14 to 42 days after sowing; 15 harvests at two-day intervals from treatment (2) and 5 harvests at 7-day intervals from the other treatments.
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Australian Journal Of Agricultural Research, 42, p. 131-138