Pioneer® Field360™ Tools App for Crop Management Decisions
Pioneer® Field360™ Tools App Can Improve Management Decisions and Practices
- Select appropriate hybrid maturities to reduce fall frost risk.
- Plan equipment and labor availability for future field operations.
- Plan scouting for crop pests
Pioneer Field360 Tools App Uses a GDU Model to Estimate Crop Development
- Growing Degree Units or GDUs (sometimes referred to as GDDs) are a measure of the daily heat that contributes to plant growth.
- GDUs are calculated from the average daily temperature, adjusted for the minimum and maximum base temperatures that support growth of a crop.
- For corn, the minimum and maximum base temperatures are 50 F and 86 F, respectively.
- Accumulated GDUs are the sum of the GDUs for each day since planting.
Estimating Corn Development Stage
| Predicting Corn Development Stage
Approximate GDUs to reach specified stage*
|*Assumes normal planting date prior to May 1
- For example, a 110 CRM hybrid is modeled to reach the VT (tassel) stage at about 1,280 GDUs and the R6 (maturity) stage at about 2,640 GDUs after planting.
- By determining what date 1,280 or 2,640 GDUs will accumulate in the field, the date of tasseling or maturity can be estimated.
Pioneer Field360 Tools App Automates this Process and Customizes it by Field
Use the Accumulated GDU Screen
- Estimated GDU accumulation is shown on the graph beginning at 0 GDUs on the lower left.
- For each of the major crop stages, a horizontal threshold line is created at the appropriate GDU level.
- Where this threshold intersects the line for GDU accumulation, an estimate of the date of occurrence for that stage can be read on the horizontal axis.
- Tapping on the threshold line displays an information balloon that helps clarify the expected date.
- Tapping in any vertical date will display a balloon with the accumulation for that date.
Daily Totals Show Detailed Information
Uses of Pioneer Field360 Tools App in Crop Production
- Before planting, use the Pioneer Field360 Tools App to test historical data with planned planting dates and hybrids to ensure they match the expected season.
- During the growing season, use it to plan field operations such as postemergent sprays, scouting or irrigation, etc.
- After the season, use the detailed view to look for events that might have impacted hybrid performance.
|Estimating Non-Crop Development
Some events are not based on crop development but can still be estimated by the tool.
Black cutworm scouting should begin about 300 GDUs after peak moth flights.
European corn borer (first generation) damage begins about 800 to 1,000 GDUs after January 1.
Watch DuPont Pioneer information for other examples of insect, weed and crop management practices that utilize GDUs to estimate crop management timing.
¹ Pioneer® brand products are provided subject to the terms and conditions of purchase which are part of the labeling and purchase documents.