Major water quality problems have occurred in Lake Erie, Grand Lake St. Marys and other Ohio water resources in recent years. Within these aquatic ecosystems, harmful organisms in the form of algal blooms have also been present.
“To protect Ohio water resources, phosphorus fertilizer must be put in the right place," says Steve Prochaska, an Ohio State University Extension field specialist and member of the university's Agronomic Crops Team. “When looking at the 4Rs of nutrient stewardship – using the right source, at the right rate, during right time and in the right place -- placing phosphorus in the right place likely holds the greatest opportunity in keeping phosphorus on farm ground and for improvement in water quality as it is related to farm field phosphorus loss."
Growers interested in learning more about the impact of tillage on phosphorus loss and other crop production factors that influence crop yields can attend a Nutrient Application Field Day July 18, offered by experts with Ohio State University's College of Food, Agricultural, and Environmental Sciences.
The field day is designed to offer information on three common tillage systems used in Ohio and discuss where the tillage implement incorporates phosphorus into the soil profile, said. OSU Extension agronomists and industry equipment personnel will lead the discussions.
“This is a nutrient application and placement field day where we're going to apply nutrients then run common tillage implements and observe in the soil profile where those nutrients end up," says Prochaska. “We're going to talk in-depth about what the crop needs in terms of the amount phosphorus to grow high yield crops and answer questions on the water quality impact of farm field phosphorus loss.
“Our Tri-State Crop Fertility phosphorus and potassium recommendations appear to be solid."