acta satech Journal of the Life & Physical Sciences Babcock

The Influence of Weed Management Options on the Growth and Effective Nodulation in Vigna Unguiculata (L) Walp
D. S. Daramola (1) & O. Amoo-Onidundu (2)
(1)Department of Agriculture, Babcock University, Ilishan-Remo, Nigeria (2)Federal College of Agriculture (FCA), Moor Plantation, Ibadan, Nigeria
Received December 3rd, 2003, revised version May 1st, 2004, accepted May 5th, 2004

ABSTRACT
The effects on Cowpea growth and effective nodulation of four weed management options were studied in pots at the glasshouse, Nigeria. In the experiment weed management was a factor involving two herbicide formulations: Galex; Dual; hand weeding and unweeded control. Another factor entered for the experiment was Cowpea with three varieties; 91 K-180 (V1) 91 F-150 (V2) and Mousa Local (V3). The twelve treatment combinations obtained were replicated six times employing Randomized Complete Block (RCB) design. The height of plants was measured fortnightly for eight weeks starting two weeks after planting. Nodule count was carried out. Nodule dry matter, top dry matter and N yield (tissue N) were determined. Varying reductions were observed through application of herbicides on plant growth, nodule variables and tissue N. Plants in GA-treated pots gave superior growth in terms of height and dry matter production, nodule parameters, tissue N than plants in DU-treated pots. Mousa Local (V3) nodulated more profusely and gave higher nodule dry matter and N yields than the elite varieties namely: V1 and V2.
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