Pesticide Research Journal

Field trials were conducted at CCS Haryana Agrrcultural University, Rice Research Station, Kaul lor rtree ccnsecutive kharif seasons during 2000, 2001 and 2002 wiih a scented rrce variety Taraori Basmati. Fipronil 003 G aaplied dt 56.2 and 75 g ai ha⁻¹ showed very promising results when applied 20 days after transplanting (DAT) and it protected the crop upto 60 DAT. Minimum incidence of stem borers and higher yield of paddy grain was recorded from fipronil 0.3 G @ 75 g ai ha⁻¹ applled at 20, 50 and 70 DAT. Insecticides applied at 50 and 70 days after transplanting could not manage the stem borers incidence and were inferior to insecticides applied at 20 DAT. Chlorpyriphos 20 EC was found least effective insecticide in reducing the damage and realizing yield.