Following frost and challenging weather conditions, it’s not uncommon to find wide staging variability in Ontario corn fields this year.
Uneven development will complicate timing of fungicide and insecticide applications, notes Dale Cowan, senior agronomist with AGRIS Cooperative, in this installment of the Corn School.
“You have to get an idea of what percentage of the field is really bad and what you’re going to focus on,” he explains. “You’re going to focus on the good corn and maybe sacrifice some of the lower ground by applying a little earlier to save the majority of the crop.
Cowan points out delayed pockets might also serve as ideal egg-laying sites for western bean cutworm, so again, he stresses the importance of getting a good perspective of the entire field when determining if economic thresholds have been reached.
Check out this video for more on how to protect yield in a variable crop: