Weed control: Effectiveness of soil treatment compared with contact sprays in rank growing crops

One of two contrasting methods might be used to control weeds in rank growing crops such as cotton, sugar cane, milo and corn:

1. A temporary sterilization of the soil to prevent the growth of weed seedlings and protect the crop;

2. A series of contact sprays beginning with a premergence treatment and following through with one or more post-emergence sprays until the crop is ready to lay by.