Figure 1. Pioneer plant population test locations in North America.
Figure 2. Pioneer GrowingPoint agronomy on-farm seeding rate trial prior to harvest (Iowa, 2017).
Optimum Seeding Rate by Yield Level
Figure 3. Corn yield response to population and optimum economic seeding rate by location yield level (7-yr average of all hybrids tested).
(Averaged across all hybrids tested. Economic optimums based on a corn rain price of $3.50/bu and a seed cost of $3.00 per 1,000 seeds; assumes 5% overplant to achieve target population.)
Optimum Seeding Rate by Hybrid Maturity
Figure 4. Yield response to plant population for corn hybrids from five maturity (CRM) ranges (7-yr average of all hybrids tested).
Planting Rate Estimator Features
Go to the Planting Rate Estimator.
For more information review Corn Plant Population Research - Water-Limited Sites.
Author: Mark Jeschke
January 2019
The foregoing is provided for informational use only. Please contact your Pioneer sales professional for information and suggestions specific to your operation. Product performance is variable and depends on many factors such as moisture and heat stress, soil type, management practices and environmental stress as well as disease and pest pressures. Individual results may vary.