From the Producer’s Perspective:
We have been yield mapping our cotton for 5 years. We have between 3 and 5 years of yield maps depending on
how we rotate our peanuts. This year we worked with our consultant to create yield stability maps from our yield
maps. This helped us determine which areas in the fields had repeatable yields – whether high or low. This was done
in the fields where we suspected the most severe nematode infestation. From the yield stability maps we created
nematode sampling zones (Figure 13). Samples collected within a zone were averaged to estimate the nematode
population of that zone. Based on the soil sample results, we created nematicide application maps. Zones with
nematode counts above our threshold received nematicide while zones below the threshold did not (Figure 14).
Figure 13: Nematode sampling zones created from yield stability maps.
Samples collected within a zone were averaged to estimate the nematode
population of that zone.
Figure 14: Nematicide application maps – zones with nematode counts
above the threshold received nematicide while zones below the threshold
did not.