Evaluation of combination spray schedules of Tricyclazole and Pseudomonas fluorescens against blast disease of rice

Abstract

Rice is  the  most  important  food  crop and directly  feeding  more  people  than  any  other  crop in  theworld.The blast disease caused by Pyricularia oryzae is a major and foremost constraint in rice production. Use of tricyclazole fungicide isone of the best and cost effective ways to quickly manage the disease.Considering the extensive use of fungicidehas adverse effects for environment, the present study has been conducted to know the effect of Tricyclazole and Pseudomonas fluorescens alone and various combinations during Rabi 2015-2016 and 2016-2017. From the two years data,the results indicated that a spray schedule consisting of tricyclazole followed by an alternate spray of Pseudomonas fluorescens (T + P + T + P), as well as either seed treatment with tricyclazole at 0.1 percent or root dipping with P. fluorescens at 1%, effectively reduced both leaf blast and neck blast with increasing grain yield.