CORN Dr. Erick Larson Addressing Fertility Problems Fall is the best time of year to address many fertility problems.
Soil acidity is a perennial problem because of Mississippi's warm, rainy climate.
The increasing use of corn in crop rotations has also contributed to many fertility problems. For example, it is common to see corn phosphorus deficiency following a cotton crop, because corn's phosphorus requirement greater than cotton. Soil testing for corn provides a phosphorus recommendation that will prevent this problem. Fall Weed Control Fall is also the best time to reduce populations of some tough perennial weeds, including johnsongrass and bermudagrass. These perennial weeds are most susceptible to chemical application at this time of year, because they are storing energy in their rhizomes in preparation for winter.