It is desirable to change the nursery site every year as it would minimise incidence of pests and diseases and also eliminate contamination by other varieties. If it is not possible to change the site, old site can be used after sterilizing by rabbing, i.e. by burning any readily available slow-burning waste-materials like, tobacco-stalks, paddy-husk, sugarcane-trash, etc. For the best results this operation should be done at the right moisture content, after the final preparation of the bed and a few days before sowing.
Acharya Narendra Deva University of Agriculture and Technology 1