Question: asking about nursery bed preparation and seed treatment of knol khol

Answer: 
nursery bed- make a bed of width 1 meter, 10-15 cm height, and a convenient length. apply dry cow dung. spray 0.1% captan solution to prevent infection and then sow the seeds.
seed treatment- dip the seeds in captan 1% solution (1 gram in 1 liter of water) for 10 mins and then shade dry for 48 hours.