India’s wheat imports are set to surge as lower plantings and poor rain threaten output in the world’s biggest grower after China. Imports may total 3.5 million metric tons in the year from April 1. That compares with the U.S. Department of Agriculture’s estimate of 2.5 million tons for 2017-18. Output is seen falling to a three-year low of 92 million tons in 2017-18 from 98.4 million tons estimated by the government for 2016-17.