This winter has felt a little more like a traditional winter season. It has been a while since I remember a year where the ground was covered in snow for the majority of January. As we have moved into early February, we are seeing the expected large temperature swings. I for one would prefer for it to get cold and stay cold, then when it was time to warm up, for it to warm up and stay there. While there may be a question every day of how thick of a coat to wear, there is one good advantage. The large temperature swings are helping to loosen up our soils, creating the ideal situation to have greater success frost seeding our pastures and hay fields to increase the quality of forages produced.
The key to getting any seed to grow is having good seed to soil contact. Planters help facilitate this by precision placement of the seed, below the soil surface, where it can gain and maintain the moisture needed to germinate and sprout properly. Frozen ground, or questionable soil conditions, keep us from dragging the planter out this early. Being able to broadcast seed, allows you to get out in the fields a little earlier, with lower expenses, but you compromise germination of all the seeds that were spread. The freezing and thawing of the ground helps work broadcast seed into the soil profile, increasing the likelihood of success.
Frost seeding, recommended amounts per acre
Frost seeding can begin in late February through March. Ideally, you are getting the seed out just a few weeks before we warm up for good. Legumes are the ideal species for these early seedings. red and white clovers, birdsfoot trefoil, and alfalfa frost see well due to their small, dense, seeds. It is still recommended to up your seeding rates to account for the fact that not all of the seeds will get worked into the soil. Red clovers and alfalfa are recommended to be seeded at 6 to 8 pounds per acre, white clovers at 2 to 4 lbs/ac., birdsfoot trefoil at 4 to 6 lbs/ac. If you are seeding a legume species into a field that hasn’t had the species for several years, it is wise to include a bacterial inoculum to aid with nitrogen fixation.