1Department of Plant Pathology, Dr. P.D.K.V., Akola, Maharashtra, India
2Department of Plant Pathology, Dr. P.D.K.V., Akola, Maharashtra, India
3Plant Pathology Section, Anand Niketan College of Agriculture, Warora, Dist. Chandrapur, Maharashtra, India
The purple blotch caused by Alternaria porri is a major onion disease. Certain chemical fungicides were tested in vivo to determine their efficacy against purple blotch. In the field experiment, treatment with bulb dip (Copper oxychloride @ 0.25% + streptomycin @ 200 ppm) + spraying with (Mancozeb @ 0.25% + carbendazim @ 0.1% + copper oxychloride @ 0.25%) treatment recorded lowest per cent disease intensity i. e. 15 % and it showed highest percent disease control i.e. 55.13 %. Maximum seed yield obtained in treatment with bulb dip (Copper oxychloride @ 0.25% + streptomycin 200 ppm) + spraying with (Mancozeb @ 0.25% + carbendazim @ 0.1% + copper oxychloride @ 0.25%) i.e. 1022 kg/ha.
Alternaria porri, Purple blotch, Management, Onion
