Vol. 10, Issue 9 (2021)

Author(s):
Swathi Shetty Y, Sudhir Kamath KV and Lakshmana

Abstract:
Cropping systems have a large effect on the size of the primary inoculum and its localisation, on the development and spread of epidemics and on the coordination of the life cycle of cultivated plants and that of their parasites. Hence to know the influence of four different cropping systems (Natural farming (ZBNF), Package of practice, Organic farming and Farmer’s practice) a field experiment was conducted at Seed farm, Zonal Agricultural and Horticultural Research Station, Brahmavar, Udupi, Karnataka during summer 2020 to investigate the influence of different cropping systems on disease severity of Cercospora leaf spot, anthracnose and powdery mildew of blackgram. Among the 4 treatments Package of practice showed lowest PDI of powdery mildew, anthracnose and Cercospora leaf spot after 2 sprays (14.50%, 24.20% and 21.14% respectively). Natural farming and Organic farming showed significant difference in PDI with Farmer’s practice in case of all the three diseases.