Madras Agricultural Journal
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Allelopathic and Integrated Weed Management with Calotropis gigantea Leaf Extract in Cotton

Abstract

Field experiments were conducted during 2013 and 2014, at Agricultural College and Research Institute, Madurai (Tamil Nadu Agricultural University) to study the effect of pre-emergence application of Calotropis gigantea leaf extract spray on weed control in cotton. The weed management practices consisted of Calotropis gigantea leaf extract spray at three concentrations (10, 20 and 30%) in combination with power weeder operation twice and manual weeding twice.The results revealed that pre-emergence application of Calotropis gigantea at 30 % concentration followed by hand weeding at 40 DAS recorded lower weed density and dry weight and increased the yield in irrigated cotton

Keywords: Calotropis gigantea leaf extract, Weed density, Weed dry weight, Yield

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Tamil Nadu Agricultural University
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Madras Agricultural Students Union
Tamil Nadu Agricultural University
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Tamil Nadu, India.

ISSN : 0024-9602
eISSN : 2582-5321

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