Weed competition and control in groundnuts (Arachis hypogaea L.)

Carson, A.G. (1976) Weed competition and control in groundnuts (Arachis hypogaea L.). Ghana Journal of Agricultural Science, 9 (3). pp. 169-173.

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Results from weed competition studies on groundnuts at Kwadaso in the forest zone of Ghana showed a 50% reduction in kernel yield due to unchecked weed growth. Four weeks of weed-free conditions after sowing were necessary to produce near optimum yields. The critical period of weed competition was at 4-6 weeks after sowing, and weeding beyond 4 weeks did not increase yields significantly. The most promising pre-em. herbicides at Kwadaso were metobromuron, fluorodifen and penoxalin [=pendimethalin] applied at 2, 3 and 1 kg/ha, respectively. At Nyankpala, in the savannah zone, napropamide at 4 kg, fluorodifen 2 kg and an alachlor + prometryne mixture at 1 kg/ha of each component were the best herbicides, in that order.

Item Type: Article
Additional Information: SNNigam Collection
Uncontrolled Keywords: Groundnut, sowing, weeding, herbicides, Ghana.
Author Affiliation: Crops Res. Inst., P.O. Box 52, Nyankpala, Tamale, Ghana.
Subjects: Plant Production > Farming Systems
Plant Protection
Crop Improvement
Divisions: Groundnut
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 03 Apr 2013 15:01
Last Modified: 03 Apr 2013 15:01
URI: http://eprints.icrisat.ac.in/id/eprint/10173

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