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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 6, Special Issue 6 (2017)

Weed spectrum, yield parameters and crop yield as influenced by integrated weed management in redgram based intercropping system

Author(s):

J Nambi

Abstract:
A field experiment was conducted at a farmer field in Tiruchchirappalli District of Dharmanathapuram village, Tamilnadu during <em>kharif </em>2016, to study the weed management practices in redgram based intercropping system. The experiment was laid out in split plot design with three replications. The treatments included five cropping systems viz., redgram + blackgram (1:1), redgram + blackgram (1:2), redgram + sesamum (1:1), redgram + sesamum (1:2) and sole redgram in the main plot. Five weed management practices were assigned to sub plot viz., unweeded control, two hand weeding on 15 and 30 DAS, pre<strong>-</strong>emergence application of pendimethalin 1.0 kg ha<strong><sup>-</sup></strong><sup>1 </sup>followed by one hand weeding on 30 DAS, pre<strong>-</strong>emergence application of pendimethalin 1.0 kg ha<strong><sup>-</sup></strong><sup>1</sup> followed by post<strong>-</strong>emergence application of imazethapyr 0.75 kg ha<strong><sup>-</sup></strong><sup>1</sup> and post<strong>-</strong>emergence application of imazethapyr 0.75 kg ha<strong><sup>-</sup></strong><sup>1 </sup>on 15 DAS followed one hand weeding on 30 DAS. Among the intercropping system redgram + blackgram (1:2) intercropping system checked growth of weed density, weed dry weight and higher weed control efficiency was higher in redgram + blackgram (1:2) intercropping system. Sole cropping of redgram increased its growth parameters and yield attributes of redgram Among the weed management practices, pre<strong>-</strong>emergence application of pendimethalin @ 1.0 kg + hand weeding on 30 DAS effectively control the weed count, weed dry matter production and there by favorably influenced the growth attributes, yield attributes and yield of redgram. Adoption of redgram + blackgram intercropping system raised as 1:1 ratio under additive series with pre<strong>-</strong>emergence application of pendimethalin @ 1.0 kg + hand weeding on 30 DAS fetched higher revenue.

Pages: 1178-1181  |  1351 Views  340 Downloads

How to cite this article:
J Nambi. Weed spectrum, yield parameters and crop yield as influenced by integrated weed management in redgram based intercropping system. J Pharmacogn Phytochem 2017;6(6S):1178-1181.

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