Evaluation of bio-efficacy and phytotoxicity of BAS 751 01 F SC against early blight disease of tomato

Abstract

Early blight disease in tomato is destructive in nature and reduces fruit yield. Fungicides were used to control early blight disease but still early blight disease occurs. Hence, for in search of good alternative fungicide to control early blight disease, field experiment on efficacy of BAS 751 01 F SC against early blight disease was conducted in kharif season of 2017-18 and 2018-19. There were 7 treatments with six fungicides and control. Observations on per cent disease index (PDI), fruit yield and phytotoxicity of fungicides on tomato were recorded. In both 2017-18 and 2018-19, BAS 751 01 F SC with a.i.(g) of 200 @ 500 ml or g/ 500 – 750 litres of water was found superior in reducing disease severity (22.12 % mean PDI) over other fungicides used. In 2017-18 and 2018-19, BAS 751 01 F SC with a.i.(g) of 200 @ 500 ml or g/ 500 – 750 litres of water treated plants produced higher yield of tomato fruits (19.41 t/ha, 19.80 t/ha) over other fungicides. BAS 751 01 F SC with a.i.(g) of 200 @ 500 ml or g/ 500 – 750 litres of water were not toxic to tomato plant in kharif season of 2017-18 and 2018-19. The results concluded that use of BAS 751 01 F SC with a.i.(g) of 200 @ 500 ml or g/ 500 – 750 litres of water resulted in reducing disease severity and improved yield.