Compatibility of seed dressing fungicides with imidacloprid seed treatment in BT cotton

Abstract

Compatibility of certain seed dressing fungicides with imidacloprid seed treatment in Bt cotton hybrid was investigated at Regional Agricultural Research Station, Lam, Guntur during 2015-2017. Jaadoo BG II cotton seed, treated with imidacloprid against early sucking pests was retreated with eight test fungicides. Seed dressing fungicides viz., thiram @ 3g/kg, carbendazim @ 2g/kg, streptocyclin @100ppm, trifloxystrobin @ 1ml/kg, captan @ 3g/kg, carboxin @ 2g/kg, mancozeb @ 3g/kg and penflufen @ 2 ml/kg seed were compatible with imidacloprid treatment of Bt cotton seed in terms of germination, seedling vigour without phytotoxicity and reduced seed borne infections along with sucking pest control up to 28days. Hence cotton seed treatment with imidacloprid followed by fungicide is recommended to manage sucking pests as well as soil and/or seed borne diseases for healthy crop stand to reap higher yields.