Effects of Herbicides on Horticultural Characteristics,Yield and Quality of Onions |
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| Authors: | A R Saghir A L Kamal M D Senzai |
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| Institution: | 1. Division of Crop Production and Protection, Faculty of Agricultural Sciences , American University of Beirut , Beirut , Lebanon;2. Division of Crop Production and Protection, Faculty of Agricultural Sciences , American University of Beirut , Beirut , Lebanon;3. Faculty of Agriculture , Kabul University , Kabul , Afghanistan |
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| Abstract: | Abstract Seven different herbicides were tested in 1967, and two of these chemicals were further evaluated in 1969 for their efficacy in onions grown in Lebanon. Chloroxuron at 6 kg a.i./ha and Sindone at 1.5 kg/ha gave a significant increase in the bulb weight and yield of onions over unweeded plots. Significant reductions in yield were observed from pre-em. applications of chlorbromuron at 3 kg/ha, propachlor at 6 kg/ha, Sindone at 0.5 kg/ha, and prometryne at 1 and 1.5 kg/ha. Good weed control was obtained as a result of pre-em. application of all herbicides tested. With post-em. application, weed control was not effective. With the exception of prometryne at 1.5 kg/ha which injured the onions and reduced the yield, the post-em. applications of herbicides tested gave no significant effect on onion yield. None of the treatments, in both pre-em. and post-em. applications, had any significant effect on leaf length, bulb index, bolting and splitting percentages, dry matter content, total soluble solids, or pungency of onions. |
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