Cotton growers across the Belt are successfully producing conservation tilled cotton on 358,500 acres (3.4%) and no-tilled cotton on 145,600 acres (1.2%) . The states of Mississippi, Missouri and Oklahoma lead the Belt in cotton grown by conservation tillage methods. Tennessee, Texas and Mississippi are the leaders in acres of no-tillage cotton. California, by state law, is regulated to conventionally tilled. The residue must be plowed under for control of pink bollworms.