Pesticidal Compatibility against Yellow Stem Borer and Sheath Blight in kharif and Rabi Rice

A field experiment was carried out at Rice Research Station, Chinsurah, Hooghly during kharif, 2013 and boro, 2013-14 to evaluate the compatibility of selected insecticides with fungicides against yellow stem borer (YSB) and sheath blight (ShB). The trial included nine treatments consisting of insecticides, pre-mix flubendiamide + buprofezin and triazophos and fungicide, hexaconazole and tricyclazole which were applied alone as individual treatment and in four possible combination treatment with untreated control. The experiment was laid in RBD with three replications. The results revealed that during kharif, flubendiamide + buprofezin had performed best against YSB. Whereas, in boro the combination of flubendiamide + buprofezin with tricyclazole was the best against dead heart. Whereas, flubendiamide + buprofezin alone had shown best result against white ear head. Low ShB severity was recorded in pre-mix flubendiamide + buprofezin along with hexaconazole treatment both in kharif and boro. In both the seasons, the highest population of spiders and coccinellids was recorded in flubendiamide + buprofezin treatment. No adverse impact on the efficacy of the combination of flubendiamide + buprofezin and triazophos with tricyclazole and hexaconazole against YSB and ShB confirming the compatibility between them when used as tank mix in the field condition.