Your Plant Health map may be as detailed as a few centimeters per pixel. Management zones make the highly detailed agricultural maps into more manageable datasets by grouping similar regions (either geographically or visually) within a field. Categorizing your area of interest according to a range of values can lead to better understanding of overall crop health.
Use the DroneDeploy Grid & Zones tool to:
-Designate ranges of "healthy" and "unhealthy" according to your own knowledge of your field
-Ground Truth more effectively
-Sample areas that are meaningful within your outside software
Access to Grid and Zones
All DroneDeploy customers on Pro, Business, Premier, or Enterprise accounts are able to use these tools on their Plant Health maps.
Follow the steps below to access DroneDeploy agricultural management tools.
Regular NDVI map of a farm
This will expand the histogram to bring up more options.
The Grid option converts the NDVI map into square pixels of roughly 50 ft.
Grid feature ON
This tool turns your map into three regions. You can tune the range of index values according to your crop or requirements by moving the blue dots on the slider. This should be done in conjunction with ground-truthing to ensure that the results are consistent with what's happening in the field.
Zones feature ON
Crude Yield Estimation with Zones
Although our NDVI values in the maps are relative, you can still get a rough idea of yield of your crop. In this corn field example, lets say that you know index ranges that corresponds to particular average yield like below (having ground-truthed some data):
- NDVI index between 0.31 and 0.33 (shaded in yellow) with average yield of 350 bushel/hectare will yield 6,300 bushels of corn (18 hectare x 350 bushel/hectare)
- NDVI index below 0.31 with 300 bushel/hectare will yield 3,840 bushels of corn (12.8 hectare x 300 bushel/hectare)
- NDVI index above 0.33 is 400 bushel/hectare will yield 4,720 bushels of corn (11.8 hectare x 400 bushels/acre)
So a total estimated yield of 14,860 bushels of corn!
This is a rough estimation. Let us know your feedback at firstname.lastname@example.org
With selecting both zone and grid option, you get grid of 3 zones. Again, you can tune the range under histogram to reflect right crop and variability.
Grid and Zone feature ON