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Amendment Effects on Soil Test Phosphorus

Source Publication:Journal of Environmental Quality Vol.34 No. 5, p. 1682-1686
Primary Author:Brauer, Aiken, Pote, Livingston, Norton, Way, Edwards Jr.
Research Site:Field experiment - soil is a Zulch fine sandy loam
City:Kurten
State:Texas
Date/Year:2005
Focus:Water Shed
Category:Peer Reviewed Papers
Crop:Not Crop Specific
Reported Results:

Gypsum applications of 5,000 pounds per acre were most effective in reducing soil test values for phosphorus, whereas a soil amendment made from waste paper was ineffective.

According to Brauer, reductions in dissolved reactive phosphorus seemed to be dependent on continual applications of gypsum. Brauer explained that gypsum curtails the amount of phosphorus loss by promoting the binding together of soil particles, thus reducing phosphorus carried along with sediment.

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