Bacterial wilt disease of ginger also known as “Green wilt disease” caused by Ralstonia solanacearum is one of the destructive pathogen causing huge yield losses. Ginger in hill zone of West Bengal are mostly grown organically and infection of R. solanacearum if accompanied by favorable environmental condition can result in complete failure of crop growth and production. Due to unavailability of proper organic management practices, farmers are now replacing cultivation of ginger with other crops. A field studies were carried out during 2019 and 2020 under organic management practices with the Rabi crops which are commonly grown in the hill-agro ecological region of West Bengal to determine the effect of ginger based cropping system on the Ralstonia population load, disease intensity and yield of the crop. Among the six (06) treatments under study ginger rotation with cabbage showed marked reduction in the population of R. solanacearum as compared to the population load in

Bacterial wilt, Ralstonia solanacearum, Ginger, Crop rotation, Disease incidence.

The results obtained from the above experiment shows that the ginger rotation with cabbage and marigold had a significant influence in reducing the R. solanacearum population, minimizing disease incidence and increasing the rhizome yield of ginger. Therefore, these crops can be incorporated in cropping sequence to order reduce the disease incidence of R. solanacearum under organic management practices.

Yonzone, R., Khalko, S., Sharma, B.R., Bhattacharya, P.M., Bandyopadhyay, S., Hembram, S., and Das, B. (2021). Influence of Crop Rotation on Disease Incidence and Population Dynamics of Ginger Wilt inciting Pathogen (Ralstonia solanacearum) under Organi