In Iowa, West et al. examined the magnitude and extent of nutrient enhancement near a water source on two experimental tall fescue pastures. The pastures exhibited zones of enhanced levels of extractable P and exchangeable K near corner water sources, which were heavily frequented by grazing cattle. Decreasing gradients extended 10 to 20 m out into the pastures from the water. The distribution patterns of total N and organic C showed less distinct and lower magnitudes of accumulation near the water sources than did P and K. Krige plots of soil nutrient distribution in pastures, aid in identifying enhanced nutrient zones, to be avoided or sampled separately when sampling soil for fertilizer recommendations or when locating sites for soil fertility trials.
Citations and enhanced abstracts for journals articles and documents focused on rangeland ecology and management. RSIS is a collaboration between Montana State University, University of Idaho, and University of Wyoming.