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Comparative efficacy of various weed control measures in weed dynamics, yield and profitability of direct seeded fine rice


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Anjum, SA, Tanveer, M ORCID: 0000-0003-4560-6439, Carrijo, D, Akbar, N, Ashraf, U, Ali, I, Zohaib, A and Manzoor, N 2017 , 'Comparative efficacy of various weed control measures in weed dynamics, yield and profitability of direct seeded fine rice' , Pakistan Journal of Agricultural Science, vol. 54, no. 1 , pp. 129-134 , doi: 10.21162/PAKJAS/17.5960.

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Water and labour scarcity pushes researchers to explore alternate sowing methods for rice like aerobic direct seeding but weed infestation is the major hindrance to adapt this production system. In our study, mechanical, chemical and cultural approaches were employed as weed control measures. Weed dynamics and yield parameters were recorded and economic analysis was performed. All weed control measures significantly reduced the weed density and weed dry weight as compared to control and improved harvest index. Maximum control in total weed density and total weed dry weight was achieved by hoeing followed by chemical control. The order of treatment groups in decreasing total density, total weed dry matter production and increment in harvest index was as cultural, chemical and mechanical. However, substantially highest net returns (PKR 44,049/) and highest benefit cost ratio (BCR) (1.53) were obtained by post emergence application of Penuxsulam at the rate of 15 g a.i ha-1 followed by hoeing. Inter-culture, mulching technique and Sesbania drummondi intercropping scored 1.19, 1.13 and 1.21 BCR, respectively. Thus, hoeing with hoe (25 and 45 days after sowing) and post emergence application of Penoxsulamat the rate of 15 g a.i ha-1 were most effective, profitable and economical weed control options.

Item Type: Article
Authors/Creators:Anjum, SA and Tanveer, M and Carrijo, D and Akbar, N and Ashraf, U and Ali, I and Zohaib, A and Manzoor, N
Keywords: direct seeded rice, weed infestation, chemical control, hoeing, inter-culture, mulching
Journal or Publication Title: Pakistan Journal of Agricultural Science
Publisher: University of Agriculture
ISSN: 0552-9034
DOI / ID Number: 10.21162/PAKJAS/17.5960
Copyright Information:

© 2017 Pakistan Journal of Agricultural Sciences

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