Figure 1. Critical environmental, genetic, and seed quality factors that affect stand establishment.
Figure 2. Average stand establishment for high and low stress emergence score hybrids in six stress emergence locations in 2018. Locations are sorted from least stressful (left) to most stressful (right) based on average early stand.
Figure 3. Amount of water uptake by corn seed during the first three hours after submersion in 50°F (10°C) water.
Figure 4. Germination of two hybrids with stress emergence scores of 7 (above average) and 4 (below average) following imbibitional chilling induced by melting ice. Ice was applied immediately after planting (0 hours) or after 24 hours or 48 hours of pre-germination in warm conditions.
Seedling injury caused by temperature fluctuations.
Figure 5. Soils temperatures at 6 AM and 6 PM for seven days after planting in a stress emergence field location near Eau Claire, WI.
Figure 6. A 15-degree Fahrenheit temperature difference was observed midday on April 15, 2019 in a central Iowa field between soil under no residue and soil under heavy residue.
Authors: Ross Ennen and Mark Jeschke
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.
PIONEER® brand products are provided subject to the terms and conditions of purchase which are part of the labeling and purchase documents.