Question: asking for the control of leaf curl, fungal and bacterial wilt and anthracnose in chilli  
Answer: for leaf curl spray malathion 50 ec @ 2 ml per litre of water 3 times at an interval of 5 days 
for fungal wilt and anthracnose leaf spot spray saaf @ 2 gram per litre of water 3 times at an interval of 5 days
for bacterial wilt spray streptomycin @ 1 gram per 5 litre of water 2 times at an interval of 10 days