Highlighter green soybeans and field management
Flown by Jon Charlesworth, Agriculture & Natural Resources Educator, Purdue Extension – Benton/Warren County
A Warren County farmer was interested in understanding differences between tillage, other field operations, cover crop and fertilizer amendments using crop health maps. Below are the stitched RGB and NDVI (crop health) maps of the field taken around stage R3. Like many soybean fields in Warren County, the plants had suffered through an extremely wet June and early July. Many of the plants were yellow and stunted.
It was obvious from the patterns in these maps that soybeans directly over drainage tile lines were healthier than plants in between tile lines. There is a definite demarcation line located about two-thirds of the way through the field when moving from North to South. The general health of the soybeans in the southern one-third of the field is considerably better than in the northern two-thirds of the field. The maps were shared with the producer and follow-up occurred after harvest to discuss the value of the imagery.
RGB 
NDVI Corn, Soybean and Wheat Examples
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