questions: asking about the procedure of seed treatment in mustard. 
 answers: suggested to treat the seeds with metalaxyl 35 ws @ 6 gram per kg of seed. also informed him that such kind of treatment helps in eliminating downy mildew and white rust. after seed treatment, it  has also been suggested to go for lime application which is in the form of dolomitic lime @ 65.5 kg per bigha 15 days before seeding and incorporate in the soil in areas,if multiple cropping is practised.