SHIMLA, June 25 -- The apple growers in Shimla, Mandi and some parts of Kullu district are worried as the crop is being attacked by apple scab due to prolonged winter and untimely rainfall in summer. The apple scab has made its return after 32 years as it affected the apple crop last in 1982 and was controlled by 1987. The fungal disease is caused due to wet and cold weather during the spring and early summer....