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Critical Period for Weed Control in Okra Vegetable \Abelmeschus Esculentus \L\ Moench\ in Northern State, Sudan
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Critical Period for Weed Control in Okra Vegetable \Abelmeschus Esculentus \L\ Moench\ in Northern State, Sudan
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Journal Article
Critical Period for Weed Control in Okra Vegetable \Abelmeschus Esculentus \L\ Moench\ in Northern State, Sudan
2020
Overview
The competition experiment was conducted for two consecutive summer seasons (2014, 2015) at Altraa village, Sharg Elneel Unit, Dongola Locality, Northern State - Sudan, located within latitude 16° and 22° N and longitude 20° and 32° E., to determine fresh pod yield loss due weed competition and to determine critical period of weed control in okra vegetable. Okra variety, khartuomia, was sown on 23 February in both summer seasons. This research comprised 12 treatments which arranged in randomized block design, with four replicates. The crop was kept weed-free for the first 2, 4, 6, 8, 10 weeks after crop sowing and then remained weedy till harvest or kept weedy for the same periods and then remained weed-free till harvest. Weed free and weedy treatments till harvest were included as controls for comparison. Broad-leaved weeds were predominant in the experimental site. Combined analysis of both summer seasons showed that, growth components were significantly reduced by weed competition under full season weed infestation treatment. Combined analysis of both summer seasons indicated that, unrestricted weed growth significantly reduced fresh pod yield (kg/fed) by 72.81% and this reduction mainly affected by the duration of weed competition, whereas the okra vegetable fresh pod yield increased when the duration of weed competition decreased. Also combined analysis of both summer seasons showed that, the critical period for weed control in okra vegetable according to this investigation was between 6 and 8 weeks after sowing.
Publisher
جامعة عبد اللطيف الحمد التكنولوجية
Subject
