1. Test soil fertility
Test soil fertility levels annually, or at least every other year, preferably in the fall. Add phosphate and/or potassium to help boost corn yields when soil tests indicate the need2. Proper nitrogen fertilizer practices are critical for high-yielding corn3. Determine the best nitrogen rate and timing by balancing the rate of uptake needed for the crop to thrive during key growth times and how much nitrogen can be lost during wet weather.
2. Research hybrid selections
Select hybrids from more than one maturity and genetic group for risk management and to spread out the workload at planting and harvest time. Research hybrids with consistently high-yield corn ratings, good standability and appropriate maturity ratings for your area. Always consult your local seed dealer and review performance ratings of various hybrids from university extension trials that match your individual farming needs1.
3. Control key pests with seed genetics and traits
Plant hybrids that have shown good yield trial results, plus your tried-and-true hybrids. Seed genetics with built-in herbicide tolerance traits can significantly enhance control of a broad range of tough-to-manage grasses and broadleaf weeds. Diversify hybrid choices to spread risk with a range of maturities and insect and disease susceptibilities.
4. Protect corn early with seed treatments
Invest in a seed treatment to protect against diseases, insect pests and nematodes to get young corn plants off to a good start. To protect against early-season pests such as corn rootworms, wireworms, white grubs and chinch bugs, as well as provide broad-spectrum protection against nematodes, consider a systemic seed treatment component along with a biological for root protection and additional modes of action for dual protection.
5. Consider optimal planting dates
Consider geography, weather and individual field conditions such as drainage when deciding when to plant. Recommended planting dates for corn tend to range from early April to early May4. Spring weather can change quickly from cool and wet to dry and warm. “Mudding in the seed” can result in the loss of valuable time spent struggling with stuck equipment, such as tractors and planters. It can also put you at risk for yield reduction due to poor stands and can cause soil compaction issues later in the season.
