Targeting Soil Fertility

by Matt Selenske, Pest Pros Division Manager/Agronomist

Times are tight with current commodity prices, so getting the most efficient productivity out of every acre is on everyone’s mind now more than ever. At Allied Cooperative we have the technology and expertise to make fertilizer and lime recommendations based on multiple layers of data. This informed approach will enable you to put the right amount of product in the right place, which maximizes the impact of every dollar you spend.

Taking GPS-referenced soil samples (“grid sampling”) is a great base layer for managing fertility. Areas to be sampled can vary by field size from five acre to sub-acre grids. The number of acres encompassed in each GPS-referenced soil sample can vary from five acres to less than one acre, but smaller fields should have at least five sample points to draw information from. With this data, we can deliver variable-rate recommendations for lime, potash, or DAP.

For example, a field that calls for an average of 200 lbs/acre of potash might have areas that need as much as 275 lbs/acre or as little as 125 lbs/acre for the same crop and yield. If 200 lbs/acre was applied on every acre of this field, some acres would receive excess potassium while other acres would be deficient. In this way, you can see how putting the right amount of product down in each area of the fields makes sense not just from an environmental standpoint but from an economic sense as well.

Finally, if someone else soil samples your farm we can import that information into our software and get you rolling towards an optimal fertility regime. Contact your Allied Agronomy Advisor today for fall soil sampling and variable-rate recommendations!


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