Plan Now for Fall Fertilization of Perennial Forages

Mark Sulc, Greg LaBarge, CPAg/CCA, OSU Extension

This is an excellent time for soil testing, and fertilizing hay fields!

Early fall is one of the best times to topdress maintenance fertilizer on perennial forages. Soils are usually firm in September, and autumn topdressing provides needed nutrients for good winter survival of the forage stand and vigorous regrowth the following spring. Now is a great time to begin preparations and acquiring fertilizer supplies so timely fall applications can be made.

Remember that hay crops will remove about 50 lbs of K2O and 12 lbs of P2O5 per ton of dry hay harvested. Adequate amounts of soil P and K are important for the productivity and persistence of forage stands. But nutrient over-application harms the environment and can harm animals fed those forages. A recent . . .

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