Question: asking about the fungal problem in vegetables.
asking about insect infestation in vegetables like brinjal, cabbage etc.
asking about the improproper development of curd in cabbage 
Answer: suggestion=
apply bordeaux mixture or saaf @ 2ml/ l of water, 3 spray at 5 days interval .( for fungal problem).
apply  dursban @ 2ml / l of water, 3 spray at 5 days interval. ( insecticide for insect infestation)
apply borax @  1 to 2 kg / bigha  for boron deficiency in land ( improper development of curd in cabbage)