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Abstract
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Article Information:
Response of Vegetable Cowpea (Vigna unguiculata) to Intra-Row Spacing and Defoliation at Garkawa
S.H. Badi, H.D. Dikwahal and G.G. Jibung
Corresponding Author: S.H. Badi
Submitted: March 01, 2012
Accepted: March 24, 2012
Published: May 05, 2012 |
Abstract:
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A field experiment aimed at investigating the response of vegetable cowpea to intra-row spacing and
defoliation at 4, 6 and 8 Weeks after Sowing (WAS) was conducted in 2009 at the Plateau State College of
Agriculture, Garkawa, Nigeria (Southern guinea Savannah). Treatments consisted of four intra-row spacing (20,
30, 40, 50 cm, respectively) and four defoliation levels (0, 25, 50 and 75%, respectively). These were factorially
combined and laid out in a Randomized Complete Block Design with three replications. Vegetable Cowpea
growth related characters (plant height, shoot fresh weight) per plant increased significantly with decreasing
levels of intra-row spacing. The intra-row spacing of 20 cm yielded 5.7 g edible leaf yields per plot. Defoliation
level at 25% gave 6.8 edible leaf yields. The interaction between intra-row spacing at 20 cm and defoliation
level at 25% produced the highest green pod yield of 404.7 kg/ha. Based on these findings, it would be
suggested that harvesting 25% leaves of vegetable cowpea at a spacing of 20 cm at 4 and 6 WAS be practiced
for optimum leaf and seed production.
Key words: Cowpea, defoliation, intra-row, spacing, vegetable, yields,
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Cite this Reference:
S.H. Badi, H.D. Dikwahal and G.G. Jibung, . Response of Vegetable Cowpea (Vigna unguiculata) to Intra-Row Spacing and Defoliation at Garkawa. Asian Journal of Agricultural Sciences, (3): 210-212.
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ISSN (Online): 2041-3890
ISSN (Print): 2041-3882 |
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