May 7, 2019 1:54 PM
Ninety ag retailer locations representing over 5.3 million acres in the Great Lakes and Upper Mississippi River Basins participated. The PARM project has been surveying retailers in Ohio since 2012, in the entire Great Lakes Basin since 2015 and recently expanded to the Upper Mississippi in 2018.
Within Great Lakes states, serviced acres with cover crops increased from 11% to 20% from 2015 to 2018; rotational soil sampling from 56% to 66%; and weather consideration before fertilizer application from 39% to 86%.
Upper Mississippi states reported higher percentages of the following compared to the Great Lakes: rotational soil sampling, VRT phosphorus (P) and nitrogen (N) application, broadcast fertilizer incorporation, custom strip-till P and N, topdress P and N application, and GPS-guided application.
Based on averages from peer-reviewed publications, product and service sales reported by participating ag retailers reduced over six million pounds of total P, one million pounds of dissolved reactive P and 59 million pounds of total N from entering waterways!