Strategies for Addressing Site-Specific Problems with Variable-Rate Seeding and Fertilizer

Kentucky no-tiller Mark Chapman shares his approach and best practices for implementing variable-rate technology to push yields in the places where it matters most.

Pictured Above: PUSHING POPULATIONS. This variable-rate seeding map of Mark Chapman’s field shows how he adjusts the seeding rate based on each zone’s yield potential compared to the field’s average yield history (see Target Seeding Rates for more details).

Click to enlarge

For decades Mark Chapman was aware of the differences within his fields.     

“We’re known that we had high-yielding regions and lower-yielding regions,” says the Bowling Green, Ky., no-tiller. “Lots of times we knew why, but we weren’t able to do something about it.”

But that all changed once he was able to bring GPS onto the farm. With the ability to collect site-specific data, he can also take site-specific actions to address those issues using variable-rate technology (VRT).

At the 2021 National No-Tillage Conference, Chapman shared his strategy for variable-rating fertilizer and seed, and…

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Laura allen

Laura Barrera

Laura Barrera is the former managing editor of No-Till Farmer and Conservation Tillage Guide magazines. Prior to joining No-Till Farmer, she served as an assistant editor for a greenhouse publication. Barrera holds a B.A. in magazine journalism from Ball State University.

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