Long-term research is important to understand how land management impacts runoff and erosion, which pose serious threats to soil and water quality worldwide. To better understand these processes in agricultural landscapes of the southern Great Plains of the United States, eight 1.6 -ha watersheds were established and instrumented in 1976 at the USDA-ARS Grazinglands Research Laboratory in El Reno, Oklahoma.
Click here for original story, 23 years of water quality data from crop-livestock systems
Source: Phys.org