AgTech: Variable Rate Planting by SST Software

The 4R's that have long guided nutrient management in precision ag are just as applicable with variable rate seeding. SST Summit and FarmRite provide the tools for making yield optimized management decisions before the seed goes into the ground. The following shows the four easy steps for creating planting recommendations, using multiple years of yield as the example.

Normalize Yield

Normalized yield maps are most often presented as a form of multi-year yield analysis; however, they can also be generated from a single year as the "best representative" yield layer. The normalized yield map below is the combination of three years of yield data. Areas that performed better than average are green and the areas that performed below average display yellow and red.

Identify Productivity Zones

After normalizing multiple years of quality yield data, productivity zones can be defined throughout the field. The following maps display three different geo-statistical results. The Yield Spatial Trends map displays zones based off the percent of the average normalized yield. The Yield Stability map uses the Coefficient of Variation (CV) to identify stable and unstable zones. The Yield Management Units map combines aspects of the former two maps to identify possible management zones.

Assign Planting Rates to Zones

Once management zones are created, seed rates are applied to each area. Seed rates may be applied within a FarmRite® order or set manually within Summit's Record section. Further adjustments may include splitting and merging zones, applying new rates, or changing varieties.

Export the Recommendation to a Controller

When your planting recommendation is ready, SST Summit lets you easily export the rec to the top planting controllers, including Raven, Precision Planting, Case IH,

John Deere, and more. Load sheets detail information such as the field name, associated file, variety, and total product needed.

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