Pioneer EnClass® Soils for Better Farming
Rationale and Objective
- Soil water level (both deficit and excess) is an important factor in crop productivity.
- Hybrids and varieties differ in their tolerance to high or low water availability and drainage.
- Pioneer EnClass® Soils, a proprietary DuPont Pioneer system, was developed to group the many soil map units into categories based upon soil water availability.
- The objective of this research was to examine how hybrids responded to plant population in 2012 in soils with different water availability characteristics as classified using Pioneer EnClass Soils.
||30,000, 34,000, 38,000 and 42,000 plants/acre
||288 locations in IA and MO
||4 per location, 48 total
- Yield monitor data from these plots were analyzed in FIT® Studio to remove common sources of yield monitor error.
- Across all 288 locations, hybrid yield response varied substantially among Pioneer EnClass Soils categories.
- Due to extended drought conditions, soils classified as Potentially Wet were often higher yielding than Well Drained or Wet/Dry soils. In years with normal rainfall, Well Drained soils are expected to be higher yielding (Figures 1-3 below).
- Hybrid yield responses to population often varied dramatically among Pioneer EnClass Soils categories.
- Based on a single year of testing, Pioneer EnClass Soils categories showed promise as a basis for improved variable-rate seeding, as well as variable-rate nitrogen applications.
- Pioneer research using the Pioneer EnClass Soils system is ongoing; consider testing this approach on your farm in 2013.
Pioneer EnClass® Soils Descriptions
Well Drained - Soils with moderate to high water availability and sufficient internal drainage, such as productive loams. Won't burn up or drown out under typical conditions.
Potentially Dry – Soils with reduced water availability and/or excessive drainage. Typically drought prone. Sands and sandy loams are examples.
Potentially Wet – Soils with high water availability, poor drainage. Potential for excess water during growing season. Often low lying with little slope. Silty clay loams and clay loams may be found in these sometimes-ponded areas.
Wet/Dry – Soils that can be wet early in the season due to poor internal drainage but have reduced water holding capacity and can dry out later. Some have reduced soil depth and low percolation rates. Droughty clays and clay-pan shallow soils are examples.
|Field map showing NRCS soil map units.
|Field map with soil map units categorized by water availability
characteristics using Pioneer EnClass® Soils.
PIONEER® brand products are provided subject to the terms and conditions of purchase which are part of the labeling and purchase documents. 2012 data are based on average of all comparisons made in 288 locations through Dec 5, 2012. Multi-year and multi-location is a better predictor of future performance. Do not use these or any other data from a limited number of trials as a significant factor in product selection. Product responses are variable and subject to a variety of environmental, disease, and pest pressures. Individual results may vary.