WEED CONTROL

Herbicide Residue

Atrazine generally has a residue the year following application
to corn at 2 lb/A in North Dakota. If soil moisture is deficient,
1 lb/A of atrazine may cause injury to susceptible crops the fol-
lowing year. Corn and millet are tolerant to atrazine while other
crops vary in susceptibility. The approximate ranking of other
crops from most to least tolerant is millet, flax, soybean, bar-
ley, wheat, oat, sunflower and sugarbeet.