Table 4: NST 3.0 model estimates of phosphorus uptake in kilograms per hectare to a depth of 120 cm over a 126 d growing season for buffers composed of varying percentages on an area basis of cottonwood, switchgrass, and smooth brome.

Plant community Percentage contribution cottonwood/switchgrass/smooth brome 66/17/17 33/33/33 0/50/50 100/0/0 0/100/0 0/0/100 kg P ha−1 Cottonwood 16.3 8.1 0 24.5 0 0 Switchgrass 3.6 7.1 10.8 0 21.5 0 Smooth brome 3.2 6.2 9.4 0 0 18.9 23.1 21.4 20.2 24.5 21.5 18.9