Soybean Checkoff Research
Water Quality
Research Projects
![](http://www.ohiofieldleader.com/wp-content/uploads/2022/01/Soil--420x294.jpg)
Trends in Ohio Soil Test Results
Soil test P levels have continued to decline since 2001, however the median STP is still between the critical level of 20 and the upper end of maintenance at 40 ppm.