Influence of time of weed removal on both vegetative and reproductive yield of two cowpea (Vigna unguiculata (L) Walp) varieties, Ife brown and TVX3236, was investigated on a farm land at the University of Ilorin, Ilorin, Nigeria during 2004 and 2005 growing seasons. Five hand weeding periods at 2,4,6,8 Weeks After Planting (WAP) and weedy control, were carried out. Hand weeding at 2WAP produced best cowpea dry matter ranging from 6.33±2.08 to 13.37±2.47g in both varieties. Highest leaf number was obtained in the cowpea plots weeded at both 2 and 4 WAP ranging from 43.00±13.05 to 106.67±25.16 in both varieties. Total chlorophyll content was highest in the cowpeas weeded at 2, 6 and 8 ranging from 12.15±to 32.79mg/g. Leaf area was generally higher in 2004 planting season than in 2005 with the least in weedy control in 2005 planting season. Pod number, pod weight, seed number and seed weight per plant were very high in the weeding periods of 2, 4, and 6 WAP.
Olorunmaiye, K. S.
"Time of Weed Removal Influence on Vegetative and Reproductive Yield of Two Cowpea (Vigna unguiculata (L) Walp) Varites, Ife Brown and TVX3236,"
3, Article 10.
Available at: http://opensiuc.lib.siu.edu/ebl/vol2010/iss3/10