questions: asking for the preventive measure to control late blight in potato. 
 answers: suggested to spray indofil m 45 @ 2.5ml in per litre or ridomil z 72 @ 2 ml in per litre of water. if rainy weather prevails during the spraying time,suggested to use sticker triton @ 0.5 ml in per litre of water in the spray solution. suggested to spray at an interval of 7 ¿ 10 days. while spraying, care should be taken to ensure wetting of the lower sides of the leaves.