Chemical control, Post-emergence, Transplanted rice, Weed management

The experiment was conducted at the Students’ Farm of College of Agriculture, CCS Haryana Agricultural University, Kaul (Kaithal) during Kharif 2008. The experiment consisted of fifteen treatments in block design with three replications. Thirty days old seedlings were transplanted on 3rd July, 2008 manually at a spacing of 20 x 15 cm with two seedlings per hill. The crop was raised with recommended fertilizer dose. Pre-emergence application of butachlor at 1500 g/ha, pretilachlor 750 g/ha,  pyrazosulfuron at 20 g/ha  or  post-emergence herbicide bispyribac-sodium at the rate of 25 g/ha at 20 DAT could be suitable and economical herbicidal weed management option for transplanted rice to achive higher productivity.