This year, the famed mango orchards of Malihabad in Lucknow are under severe stress. The fruits are smaller than usual, many are dropping prematurely, and growers are reporting a sharp decline in overall production. Farmers and scientists say the culprit is a rapidly changing climate that has disrupted the delicate weather cycle essential for mango cultivation.Often called the mango capital of India, Malihabad holds the same significance for man…