We are often asked about making application of our products on snow-covered ground. Applications in the late fall and early winter should have the same types of considerations as they do in other parts of the year.
When considering application timing, water should always be the preeminent issue. Water influences the movement of soil applied inputs, and when water has potential to run (and not infiltrate), then perhaps applications should be delayed. These events are not always easy to predict, so using your best judgment is the way to go.
Even if the ground is completely frozen, applications can still be made before a significant amount of snow is on the ground. A quick, extremely wet spring can lead to product runoff and off-target effects, but those events need to be substantial to have a large impact. Hoping for a slow snow melt and ground thaw will be the best way to have products incorporated that were applied on frozen ground, but even if there is some runoff, it’s not likely that all of the product will be taken from where it was applied.
If applications must be made to saturated fields with snow cover, apply them away from sensitive areas.