The report offers full information on your field: productivity, soil brightness, and relief.

We recommend starting off by looking at the number of seasons in the field report that were factored in when building the productivity zones. The more seasons are used, the more accurately the productivity zones are determined. As a reminder, the fields that are suitable for variable-rate application should have at least three seasons in which the productivity zones were distributed in the same areas and covered over 40% of the area.

After that, you can evaluate the productivity zones themselves to see how well they correspond to how you thought productivity is distributed in the field. Compare the productivity zones with the relief and soil brightness to explain the productivity distribution based on these factors and make sure that the zones are distributed correctly.

By studying these three layers of data, you can conclude which of 4 factors are limiting yield in the low-productivity zone:

  1. Erosion

  2. Waterlogging

  3. Salinity

  4. Low pH

Let's look at a couple of examples. The picture below shows the low-productivity zone is in light soil and at an elevation. That means that low moisture and nutrient content is probably limiting yield in the top part of the field.

In the second case, the low-productivity zone is located in a low-lying area with high levels of organic matter and nutrients. That means that the field experiences waterlogging year after year.


Now you know in which fields VRA technology can be used. Having learned all the strengths and weaknesses of your field, it's time to set up a trial and create VRA maps to get the most out of your field!

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