Vol. 13 No. 1
Efficacy of Sesbania brown manuring and weed management approaches to improve the production and weed control efficiency in transplanted rice
Author(s): M. H. ANSARI, R. A. YADAV, M. Z. SIDDIQUI, M. A. ANSARI1 AND N. KHAN
Abstract: In Central India, rice is the important crop and occupies maximum area. However, the favorable environment for the growth of wide spectrum of weeds is the main reason of reduced productivity of crop. Therefore, effective weed management approaches is essential for higher productivity in rice. Keeping this in view, a field experiment was conducted to find out the efficacy of Sesbania brown manuring and weed management efficacy in suppression of weed dynamics and improvement of production and control efficiency under transplanted rice. The experiment was conducted at Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, Uttar Pradesh during kharif season for two consecutive kharif seasons of 2013 and 2014. The experiment was laid out in split plot design with two crop establishment techniques [Transplanted Rice, Transplanted Rice + brown manuring (Sesbania)] in main plots and four treatments of weed management practices (weedy check, Bispyribac sodium 25 g ha-1 + (Chlorimuron + metsulfuron) 4 g ha-1, Bispyribac sodium 25 g ha-1 + (Chlorimuron + metsulfuron) 4 g ha-1 followed by one hand weeding at 45 DAT and two hand weeding at 20 DAT and 45 DAT) in sub-plots with three replication. Among the crop establishment methods, weed density and weed biomass at 30 and 90 DAS was recorded minimum in transplanted rice (TPR) with brown manuring (BM) as compared to TPR without BM. Similarly, among weed control approaches, the minimum weed density and weed biomass was recorded under two hand weeding at 20 DAT and 45 DAT followed by Bispyribac sodium 25 g ha-1 + (Chlorimuron + metsulfuron) 4 g ha-1 followed by one hand weeding. Consequently, weed control efficiency, yield, production efficiency were maximum under the same treatment.
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