Water Movement Through Soil Profiles Under Three Different Farming Systems (Part 1)
Dr. Tom Schumacher, Retired, SDSU, walks us through the experimental setup he used with large rainfall simulators, the type developed for the Universal Soil Loss Equation (USLE), on three different farming systems. The data Dr. Tom discusses is based on experimental runs conducted four years after this land was taken out of CRP and then continuously treated with a moldboard plow, a chisel plow and no-till. With the use of TDR probes that sense moisture at 10 cm (4inches) and 40 cm (16 inches), Dr. Tom shows what happens to soil moisture at 4 and 16 inches in the moldboard plow treatment and what the runoff consequences are and he briefly compares them to the other two treatments. In the next video we will continue as Dr. Tom walks us through the no-till and chisel plow treatments.
References to this work can be found at:
Lindstrom, M. J., Schumacher, T. E., & Blecha, M. L. (1994). Management considerations for returning CRP lands to crop production. Journal of Soil and Water Conservation, 49(5), 420-425.
Schumacher, T., Lindstrom, M., Blecha, M., Cogo, N., Clay, D., & Bleakley, B. (1995). Soil management after CRP contracts expire. In Clean Water Clean Environment 21st Century Conference Proceedings.
Lindstrom, M. J., Schumacher, T. E., Cogo, N. P., & Blecha, M. L. (1998). Tillage effects on water runoff and soil erosion after sod. Journal of soil and water conservation, 53(1), 59-63.
Dr. Schumacher is working with the USDA Natural Resources Conservation Service on South Dakota's Merit or Myth.
USDA is an Equal Opportunity Provider, Employer and Lender.