Corns Up! Now What?

Davey Emery, Maizex Territory Manager

The spring of 2018 will go down as a slightly delayed planting season in south western Ontario. Some of the corn in Chatham – Kent that was planted on May/02/2018 is now starting to finally emerge. Ironically, corn planted on May/07/2018 is also emerging at the same time. This is because of warmer planting conditions on May 7th vs May 2nd .

With soil conditions now too wet to do any field work, it’s a perfect time to evaluate the emerging crop and make adjustments to equipment and management strategies for the remainder of the crop not yet planted.


These pictures demonstrate:

Uniform emergence
Uniform spacing
2’’ Planting depth
Weed free environment






If you are seeing variability with your emergence or spacing, it would be a good time to determine the root cause. Often, it can be as simple as an adjustment to your planter.


If you are seeing weeds emerge, it would be a good time to determine what species are present, and develop a post emerge herbicide plan that includes multiple modes of effective action for control. It’s critical to control weeds early to prevent unwanted yield limiting antagonism with the corn.


If you have applied all of your nitrogen up front, you may want to include soil nitrate testing as part of your monitoring this year (especially if you received excessive rainfall)


This is also a good time to scout for wireworms and grubs to evaluate the effectiveness of your current seed treatment 


Remember, when Mother Nature does allow us to get back to into the fields to plant, proper soil conditions are more influential to yield than calendar date.