Question: query regarding fertiliser dose of potato and disease infection in tomato
Answer: 1. nutrient management in potato:- 
in potato the  fertiliser dose are as follows - urea -15 kg , ssp - 12.5 kg , & mop -12.5 kg  per bigha land [ basel dose is half of the recommended dose  that is - 7 kg , 6 kg & 6 kg , which is given at the time of soil preperation and remaining dose to be given 30 days after sowing.  

2. chemical control for early blight in tomato
spray hexaconazole 5% sc @ 1ml/l 30 and 50 days after planting.
or spray mancozeb 0.2% @ 2g/l.