questions: query regarding to control damping-off/bacterial wilt in cauliflower and to overcome buttoning. 
 answers: suggested him to spray contaf/hexadhan @ 2ml/lit of water or drenching with cristocycline @ 1gm/10lit of water to control damping off/bacterial wilt. for nitrogen deficiency spray urea @ 10gm/lit of water at 12 days interval