Madras Agricultural Journal
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Research Article | Open Access | Peer Review

Chemical Weed Control in Maize - Wheat Rotation in Semi Arid Tropics

Volume : 64
Issue: Feb-feb
Pages: 84 - 89
Published: October 11, 2023
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Abstract


Results of a five year field trial in a permanent layout showed that no more then 100 per cent replenishment of nitrogen removed by weeds was necessary to reduce weed competition. Increasing rates of simazino significantly increased maize yield but since it tended to decrease wheat yields, half a kilogram of simazine as pre-emergence rear- ment was the best treatment vis-a-vis treedom from harmful residual effect of higher rates on wheat. Pre+post-emergence application providing 0.5 kg 2,4-D/ha along with replenishment of 100 per cent N removed by weeds was the most beneficial treatment. Increase in maize yield and reduction in weed dry matter production with the use of simazine at half a kg/ha rate were 4.2 and 13.2 g/ha. respectively without harmful effect on wheat.

DOI
Pages
84 - 89
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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