Effect of Weed Management Practices on Nutrient Uptake and Removal in Transplanted Rice
B. Venkatesh *
Department of Agronomy, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad, Telangana-500 030, India.
Y. S. Parameswari
Department of Agronomy, College Farm, PJTSAU, Rajendranagar, Hyderabad, Telangana-500 030, India.
M. Madhavi
Department of Agronomy, Agriculture College Aswaraopet, PJTSAU, Rajendranagar, Hyderabad, Telangana-500 030, India.
T. Ram Prakash
Department of Soil Science and Agricultural Chemistry, AICRP on Weed Management, PJTSAU, Rajendranagar, Hyderabad, Telangana-500 030, India.
*Author to whom correspondence should be addressed.
Abstract
Different pre and post emergence herbicides, herbicide mixtures along with hand weeding in transplanted rice were evaluated at PJTSAU, Rajendranagar during Kharif season of 2019 in a randomized block design with three replications. Higher nutrient uptake by grain and straw were recorded with application of flopyrauxifen-benzyl 2.7% + cyhalofop-butyl 10% EC 150 g ha -1(PoE) fb hand weeding at 40 DAT and lower nutrient removal by weeds were recorded with application of herbicide mixtures along with hand weeding than single herbicide application followed by hand weeding. Where as in case of unweeded control lower nutrient uptake and higher nutrient removal by weeds over all the treatments.
Keywords: Herbicide mixtures, hand weeding, nutrient uptake, nutrient removal, transplanted rice