1Government P G College, Jaiharikhal, Pauri Garhwal, Uttarakhand
2Department of Plant Physiology, College of Basic Science and Humanities, G. B. Pant University of Agricultural and Technology, Pantnagar, 263145
3Department of Environmental Plant Biology, High Altitude Plant Physiology Research Centre, Hemvati Nandan Bahuguna Garhwal University, Srinagar, Garhwal, Uttarakhand, India
Online Published on 04 July, 2023.
Present investigation was undertaken on transplanted rice at the Norman E. Borlaug Crop research center, G. B. Pant University of Agriculture and Technology, Pantnagar. The field experiment was conducted as a part of a long-term trial in a rice wheat cropping system under the AICRP on weed control to evaluate the effectiveness of chemical weed management practices. The weed management practices operated in crop of paddy were weedy check, hand weeding, butachlor @ 1.5 kg kg/ha and anilofos @ 0.5 kg/ha. Weed dry weight was lower due to the applicaton in both herbicide treatments, as well as weeding. The leaf area index (LAI) differed significantly due to weed management practices. Anilofos treatment at 30 and 45 days after transplantation (DAT) recorded significantly higher leaf area index. At 60 DAT, highest leaf area index was recorded when weeding was practiced. Hand weeding + herbicide treatments recorded higher photosynthetic rate as compared to that in weedy plot. Bacterial population in soil was higher in (butachlor and anilofos) treated plots as compared to hand weeding and weedy plots, which indicated that soil micro-flora has positive response to weed management practices.
Weed management practices, Rice, Leaf area index (LAI), Soil microflora
