Delayed Corn Planting Considerations - Northern Corn Belt
Switching to Earlier Maturity Hybrids
- When rainfall significantly delays field and planting operations, switching to early maturity hybrids may be considered to ensure timely crop maturation.
- To help guide these decisions, Pioneer researchers conducted planting date studies over 18 years.
- Northern Corn Belt studies included 17 environments in central Minnesota and northern Wisconsin and a total of 49 different Pioneer® brand corn products ranging from 87 to 105 CRM.
- Adjusted gross income was calculated for corn products in different maturity ranges over a range of planting dates based on income from corn yield at $3.50/bu minus drying costs and discounts for low test weights.
- Farmers should consult their local Pioneer representative for recommendations about hybrid switches under delayed planting conditions.
Figure 1. Profitability of full-season (98-105 CRM) vs. early maturity (87-91 CRM) hybrids by planting date in the Northern Corn Belt.
- Full season hybrids provided the greatest profitability when planted up until May 26.
- Farmers may consider switching to an earlier maturity hybrid after May 26.
Figure 2. Profitability of mid-maturity (92-97 CRM) vs. early maturity (87-91 CRM) hybrids by planting date in the Northern Corn Belt.
- Adjusted gross income of mid-maturity hybrids was greater than that of early maturity hybrids with planting dates through June 16.
- Results indicate little advantage to switching from a mid-maturity to an early maturity hybrid, even with extremely delayed planting.
- Adjusted gross income/acre was calculated as gross income at a corn price of $3.50/bu minus drying costs and discounts for low test weights. Higher corn price would move switching date later.
- Drying costs were calculated based on 4 cents/bu for each point of moisture above 15%. Higher drying costs would move switching date earlier.
Author: Mark Jeschke
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