Original Research Article
Year: 2015 | Month: December | Volume: 2 | Issue: 12 | Pages: 723-726
Field Studies on Compatibility of New Insecticides and Fungicides against Stem Borer and Leaf Blast under Semi Deep Water Rice Condition
SS Prasad, PK Gupta, JP Mishra
Narendra Dev University of Agriculture and Technology, Crop Research Station, Ghaghraghat, Bahraich 271901, India.
Corresponding Author: SS Prasad
Field experiments were conducted on semi deep water rice variety, NDGR 201 during kharif seasons 2013-14 and 2014-15 to study the compatibility of insecticides, viz. Flubendiamide+buprofezin 24 SC and Triazophos 40 EC and; and fungicides, viz. Hexaconazole 5 SC and Tricyclazole 75 WP alone and tank mixed in all possible combinations against rice stem borer and leaf blast disease. The infestation of stem borer and leaf blast varied from 2.19 to 10.05% and 4.00 to 16.52%, respectively during the period. The results of two kharif seasons indicated that insecticidal and fungicidal treatments alone were effective against stem borer and leaf blast, respectively, whereas the combination treatments were effective against both stem borer and leaf blast. The combination of Flubendiamide+buprofezin 24 SC @ 1.75 g l-1 and Tricyclazole 75 WP @ 0.6 g l-1 was most effective against both stem borer and leaf blast with 3.22 and 5.01% infestation, respectively and fetched average grain yield of 30.39 q ha-1. It was closely followed by the combination Flubendiamide+buprofezin 24 SC @ 1.75 g l-1 and Hexaconazole 5 SC @ 2.0 ml l-1 with 3.16% average stem borer infestation, 4.06% average leaf blast disease severity and 30.26 q ha-1 average grain yield.
Key words: field evaluation, compatibility, stem borer, leaf blast, semi deep water rice.