Systematic Approach To Responsible Agriculture
Geographically reference data layers are the foundation on which we build our cropping plans.
In 2009, we took our precision-agronomic practices to the next level. We took EM or (electromagnetic) surveys of each of our fields. EM-mapping measures soil properties such as soil texture, water holding capacity, salinity, bulk density and cation exchange capacity. The survey maps the spatial variability of these soil properties on 70′ paths at 2 meter resolution. RTK (Real Time Kinematic) elevation measurements were also recorded to precisely map landscape change, slope, aspect and depression.
The results of the survey are spatially referenced maps of the physical and chemical properties of the soil, which highly correlate to yield. Increasingly informed decisions for efficient use of fertilizer, seed, chemicals and water are possible by using a systematic approach from this core set of reference data.
Step 1. Electromagnetic Survey
Correlate soil properties to yield potential.
Step 2. Define Optimum Soil Sample Zones
Correlate soil properties to yield potential. Optimal soil sample locations derived from EM spatial variability and landscape change.
Step 3. Variable Rate Fertilizer and Seeding
Combine multiple data layers to create advanced management zones for variable rate fertilizer and seeding prescriptions.
Step 4. Variable Rate Irrigation
Create irrigation prescriptions using EM data to determine the variation in the water-holding capacity of the soil and topographic data layers, landscape change, slope, and aspect. The results determine runoff locations.
Monitor the moisture content of real-time soil from the soil moisture probe placed in the EM and topographic data’s optimal field location.