Productivity of direct seeded rice in response to various weed management practices and their residual effect on green gram
B. Jyothi Basu*, Prasad PVN, Murthy VRK, Y.Ashoka Rani and Prasad PRK
Department of Agronomy, Agricultural College, Acharya N.G. Ranga Agricultural University, Bapatla, Andhra Pradesh- 522101
*Corresponding author (Email – jyoba226@gmail.com)
Received: 10th April 2020; Accepted: 27th May 2020
Abstract
Field experiment was conducted during 2015-16 and 2016-17 at Agricultural College farm, Bapatla, Guntur, Andhra Pradesh to study the efficacy of sequential application of herbicides in direct sown rice-green gram cropping system. The experiment was laid out in randomized block design with three replications. Though weed free treatment (T13) resulted in higher gross returns during both the years of study (Rs. 114376 and Rs. 124482 ha-1 during 2015-16 and 2016-17, respectively) the net returns and return per rupee investment were markedly higher under pre-emergence application of bensulfuron methyl @ 60 g a.i. ha-1 + pretilachlor with safener at 500 g a.i. ha-1 followed by post-emergence application of azimsulfuron @ 20 g a.i. ha-1 at 25 DAS andpost-emergence application of metsulfuron methyl and chlorimuron ethyl @ 4 g a.i. ha-1 applied at 45 DAS (T9 ) during both the years.