Weeds are larger and harder to kill in poor stands of winter wheat. However, wider row spacings are preferred in areas where there is more stubble and less rainfall. Barnyardgrass, foxtail species and field sandbur are especially troublesome in these wider spaced plantings in the higher rainfall areas. Farmers should make every effort to obtain uniform and vigorous stands of wheat. Poor stands and the lack of vigor are usually due to poor moisture management during the fallow period before winter wheat planting.
Common purslane is especially troublesome.
Using a rodweeder to kill weeds and firm up a seedbed on the last two tillages prior to planting. Checking depth of seeding to be sure seed is planted 1 inch into moist soil, especially in the tractor tracks. Planting an adapted variety at the proper time. Using tillage methods during the summer fallow period that leave plant residue on the soil surface to control erosion. Fertilizing according to soil tests.