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 communityPercentage contribution cottonwood/switchgrass/smooth brome
66/17/1733/33/330/50/50100/0/00/100/00/0/100
kg P ha−1

Cottonwood16.38.1024.500
Switchgrass3.67.110.8021.50
Smooth brome3.26.29.40018.9

23.121.420.224.521.518.9