Tuesday, October 13, 2015
Remote Sensing to Combat Weeds
In the NDVI orthomosaic (left), the red area is sandy soil; it produced very little wheat. In the color-enhanced orthomosaic (right), the blue area represents the sandy soil with little growth.
As we shift from intensive to precision agriculture, we're going to need tools to give us an up-to date view of our crops and fields. The article in question is using UAV (unmanned aerial vehicles) to remotely sense their crop fields for weeds. The maps can show them areas of higher weed density, and can even track the spread of herbicide resistant populations.
Farmers are in need of maps that show them areas in the field that are stressed from either water damage, pests, lack of nutrients.. etc. and remote sensing can help with these issues as well.
Remote sensing can also be used to get an even better idea about the distribution of soil types on the landscape so farmers can manage water and nutrients better based on whether the soil is sandy or clay.
The author also discusses the fact that whether you use a UAV or larger, piloted aircraft, the images produced are significantly more useful than current crop scouting and mapping methods.