Abstract
Grid soil sampling and variable rate fertilizer applications are a part of the precision agriculture movement that has captured the interest of many farmers. Variable rate fertilization requires extra expense and effort plus the use of often unfamiliar technology. Global Positioning Systems (GPS) equipment and computer software are used to outline and grid the field into small manageable units or “cells” (usually 2.5 acres). Each grid cell is soil sampled and tested for pH and available nutrients. Fertilizer recommendations are made on each grid cell and the fertilizer is spread by each grid cell using a truck equipped with GPS and variable rate fertilizer spreaders.
Publication Date
1997
Volume
18
Number
10
Repository Citation
Murdock, Lloyd W. and Howe, Paula L., "Profitability of Variable Rate Fertilization on a Kentucky Soil (a Theoretical Analysis)" (1997). Soil Science News and Views. 12.
https://uknowledge.uky.edu/pss_views/12
