• TerrAvion TerrAvion
  • Jun 25
  • 1 min read

Midwest rainstorms: identifying and addressing nutrient leaching

As severe weather conditions and heavy rains persist through parts of the Midwest this week, all of us at TerrAvion are hoping for the best for everyone in the affected regions.  
When the rains pass, we want to make sure our growers are prepared to address a likely result of the excessive rainfall in their fields - nutrient leaching. Growers can use their TerrAvion thermal imagery to identify waterlogged soils prone to nutrient leaching, their NDVI imagery to spot plant stress resulting from nutrient deficiencies, and can create thermal and NDVI management zone maps to guide nutrient replenishment applications.
 nitrogen therm ndvi
The image above shows a field that suffered from nitrogen leaching resulting from a heavy rainstorm in early June of 2017. You can see the effects of the nitrogen deficiency in the natural color and NDVI imagery from 6/27/17, but before this stress was later detected, the thermal imagery from shortly after the storm, on 6/6/17, reveals waterlogged soil that lead to the nitrogen leaching.
Growers can use their thermal imagery to guide preemptive nutrient applications to washed out zones or use their NDVI imagery to guide applications after nutrient deficiency related plant stress reveals itself. Use the TerrAvion zone creation tool to create zoning maps for variable rate and spot nutrient applications.
As always, when reviewing your TerrAvion imagery, scouting is required to determine the exact cause of the identified plant stress. While scouting, keep in mind that nitrogen loss will often appear first on the lower leaves of a plant. For more information on creating NDVI and thermal management zone maps, click here.