sentences:  CP Group has incurred criticism for the way it purchases maize harvests for animal feed from farmers in Nan and other provinces.Suphachai Chearavanont, vice-chairman of CP Group, said that corn planters will be encouraged to grow cash crops such as coffee, which requires less farmland and makes a higher profit than maize.Not only will this address the bald-mountain problem, he said, but it will also help reduce the spring haze in the north which is caused by slash-and-burn practices to prepare land for the next maize season.