questions: asking about yellow spots in cabbage 
 answers: told him to do ooze test (dip the effected part in a glass of water and keep for 45 minutees). if ooze comes out then spray streptomycin (1ml/5 lit of water) @ 3 sprays at 5 days interval and if ooze don’t show in the water then spray saaf (2gm/lit of water) @ 3 sprays at 5 days interval