Evaluation of Weed Control Methods in Dry and Rainy Seasons Cowpea in Sudan Savanna Ecology
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- Cowpea, Weed Control, Herbicides, Yield, Yield Components
- Lado, A.; Hussaini, M. A.
- This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. CC BY-NC-SA 4.0 Creative Commons License: https://creativecommons.org/licenses/by-nc-sa/4.0/
- A field study was conducted at teaching and research farm of Bayero University Kano during the dry and rainy seasons of 2008 to determine the effect of various weed control methods on yield and yield components of cowpea. The study consisted of 15 treatments comprising 13 herbicide combinations with or without supplementary hoe weeding, two-hoe weeded and weedy check plots arranged in randomized complete block design with 3 replications. The experimental sites were largely dominated by broad leaved weed species which were higher in the dry season site than in the rainy season site. Among different weed control methods, two hoe weeding had consistently and significantly produced higher pod yield, number of pods per plant, number of grains per pod, 100-seed weight and grain yield per hectare. Among the herbicide treated plots, Pre-emergence application of Metolachlor and Prometryn (at both rates) followed by supplementary hoe weeding had performed significantly better than the other herbicide treated plots with the respect to pod yield, number of pods per plant, number of grains per pod and 100-seed weight. Maximum reduction in weed dry weight was observed with two hoe weeding. The weedy check recorded the highest weed dry matter and the lowest grain yield. Comparable grain yield were recorded among pre-emergence application of Metolachlor and Prometryn followed by supplementary weeding, or with post emergence application of Fluazifop alone. Significant correlation among grain yield, yield components and weed dry weight was recorded in both seasons.
Full text: IJRAS_94_Final.pdf