One of the well-established precision agriculture technologies is variable rate desiccation. VR desiccation enables precise control over the desiccation process, helping to synchronize crop maturity across a field. This results in a more uniform crop stand, making harvesting easier and reducing losses. The economic benefits of VR desiccation are primarily tied to reduced input costs. Studies have shown that precision application techniques during this operation can decrease the total amount of desiccant used by up to 40% without noticeable impact on crop maturity and harvestability.
The most common use of VR desiccation involves on-off application, with the full rate of desiccant applied in areas with greener and more lush vegetation, while areas with more mature crops, which have little green material left, receive a reduced or zero rate. This variability is typically reflected in an NDVI image, which helps to build an accurate application map.
By applying desiccants only where needed, VR desiccation also reduces chemical runoff and lowers the risk of contamination, much like the benefits observed with variable rate fertilizer or fungicide application. While this doesn’t directly reduce growers’ costs, it contributes to a healthier environment for future generations.
For farmers who already implement variable rate fertility on their farms, adding an extra step of precision agriculture typically doesn’t incur additional costs. In some cases, farmers just need to be aware that their spraying equipment is VR-capable to take advantage of this technology.
In regions where desiccation is common, our team of senior agronomists is ready to assist with mapping and application to reduce input costs. Contact us to speak with your local agronomist in MB, SK, or AB.