Developing Multi-Variate Management Zones for Corn Production

This project intends to evaluate the benefit of multi-variate management zones and develop strategies which can account for the temporal and spacial variability seen in crop nutrient requirements.

IPNI-2014-USA-OK08

22 May 2017

2016 Annual Interpretive Summary


The objective of this project is to evaluate the benefit of multi-variate management zones and to develop strategies that can account for the temporal and spatial variability seen in crop nutrient requirements. During 2016, grid soil sample data were collected from 300 fields. Location of these fields stretched from central Kansas to Southern Oklahoma. The data set included records from 22 counties in Oklahoma and four counties in Kansas. The data are being analyzed to document variability in soil pH, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), boron (B), zinc (Zn), manganese (Mn), copper (Cu), and iron (Fe).

In 2017, the data will be used to identify multiple fields that will be used to evaluate variable-rate nutrient and population interactions. The grid soil data will also be further analyzed by agronomic modelers, an agricultural economist, and agronomists to create decision aid tools for multi-variate zone delineation.