LUCKNOW, April 6 -- With horticulturists already battling the impacts of climate change, mango yield in northern India including Uttar Pradesh, known for its prized Chausa, Dussehri and Langra varieties globally, may be hit by the earlier-than-usual summer this year, said experts at Lucknow's ICAR-Central Institute of Subtropical Horticulture (CISH)....