Author(s):

Paulraj Suryakala, G Murugan, M Saravanaperumal, P Stalin and C Kalaiyarasan

Abstract: A field investigation was conducted during Samba season of 2017 to evaluate the efficacy of pre and post emergence herbicides in transplanted rice in Cuddalore. The new herbicides evaluated were Pretilachlor 6% + Pyrazosulfuron-ethyl 0.15% GR @ 10 kg ha^-1 along with post emergence herbicides Fenoxaprop-p-ethyl 9.3% w/w @ 875 ml ha^-1, Bispyribac-sodium 10% SC @ 200 ml ha^-1. Results of the study revealed that Pre-emergence herbicide application of Pretilachlor + Pyrazosulfuron-ethyl followed by post emergence herbicide application of Bispyribac-sodium recorded lower weed total population, higher growth parameters, grain yield (5163 kg ha^-1) and straw yield (7654 kg ha^-1) followed by Pretilachlor + Pyrazosulfuron-ethyl + Fenoxaprop-p-ethyl.

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