NDVI variable deliverable

Objective

This guide aims to show the workflow that must be followed to obtain a variable rate prescription deliverable based on NDVI.

This deliverable is available for CORN, SUGARCANE, BEET, SOYBEAN, AND WHEAT crops. If there is any other crop where this service would be of interest, Hemav must be notified to study the product’s viability for that crop.

Delivery collection

To obtain this deliverable, follow these steps:

  1. The plot of interest is selected.

  2. Select the date of interest. We need to make sure it’s a cloudless day.

  3. In the downloads tab, you will see the ‘Vegetative Vigor NDVI’ option.

Figure 1. Deliverable selection.

  1. Select the resolution for the output shp. By default, it appears as 10 meters. This is variable, so if the machinery where the shp is to be used allows minimum surfaces of specific sizes, the client can set the most suitable resolution. Resolutions of 10, 20, or 50 m can be chosen. At this point, you must select whether you want a deliverable in pdf or shp format.

Figure 2. Parameter selection for the resulting shp.

  1. If SHP output is selected, the result is as follows:

Figure 3. Result in SHP format.

In the SHP format result, we can see as many classes as vegetation vigor is detected in the plot. In this example, we have 4 classes (there is a maximum of 5 classes).

This deliverable could be used to plan various applications such as phytosanitary products, seeds, etc. based on the plot variability.

  1. If the result is selected in PDF format, the output is as follows:

Figure 4. Result in PDF format.

In the PDF format output, you can observe the zoned NDVI in the central map. In this example, we have 4 differentiated classes in this plot. On the right side of the deliverable, there is a pie chart showing the area associated with each class and, below it, the legend (dark blue for very high vigor and red for very low vigor). The thresholds are fixed for each crop.