questions: asking the preventive measure against late blight of potato which he had cultivated in a land of 1 bigha. 
 answers: suggested to spray indofil m 45 @ 2.5 gram per litre of water or ridomil mz 72 @ 2 gram per litre of water alternatively at an interval of 10 - 12 days. suggested to take care during spraying so that the lower part of the leaves also gets wettened.the volume suggested is 60 litres/bigha.suggested that in the coming year, he should go for kufri megha and kufri baadshah variety of potato because these two varieties has resistant power against late blight.