Soybean Checkoff Research
Phosphorus progress in Ohio
“Decreasing long-term STP trends and P balance is good news for Ohio farmers and all Ohioans interested in improving Ohio surface water quality. These results suggest that Ohio farmers are taking steps to manage P inputs and STP. Continued success will result in reduced P runoff and move Ohio closer to achieving water quality targets.” – Libby Dayton, OSU Extension
Factors that influence nutrient loss
“The big picture is that excess P and N fuel algal blooms and have negative impacts. Excess P and N fertilize the algal blooms which eventually die and decompose stripping oxygen from the water causing hypoxic zones. There are over 400 different hypoxic zones found in the world today.” – Brittany Hanrahan, research biologist with the ARS Soil Drainage Research Unit in Ohio
The American Society of Agronomy describes strip till as “Strip-till is in between the two systems (No-till and Conventional Till) where you combine the benefits of each” and a compromise between strict no-till and conventional tillage.
Compaction or Poor Soil Structure?
“Cover crop roots may increase water infiltration down 3 feet or deeper to improve water drainage.” – James J. Hoorman, Hoorman Soil Health Services
Reducing Phosphorus Runoff
“Recently, researchers have concentrated mainly on Dissolved Reactive Phosphorus because it flows with the water and is easily Harmful Algal Bloom absorbed. ” – James Hoorman, Hoorman Soil Health Services
Adapting to Extreme Weather
“Growing winter cover crops with evapotranspiration may dry the soil quicker.” – James Hoorman, Hoorman Soil Health Services
Fertilizer applied years ago still affects Lake Erie
“There’s also a substantial amount of phosphorus leaving fields that was applied years before. It will take time and patience to achieve the reductions in phosphorus that we need to reduce the severity of the annual algal bloom.” – Laura Johnson, National Center or Water Quality Research, Heidelberg University
Ohio State Report Evaluates Options for Reducing Lake Erie’s Harmful Algal Blooms
“There’s a lot of edge-of-field work going on that identifies successful practices in single fields. But when we scale up and ask how many of those practices need to be adopted over a wide area like the Maumee River watershed, that’s where we turn to our models.” – Jay Martin