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Adsorption and desorption of phosphorus (P) and nitrogen (N) by stalk residues may influence the concentrations of P and N in runoff. A laboratory study was conducted to measure the effects of P and N constituents in solution on adsorption and desorption of P and N by corn, soybean, and wheat stalk residues. Experimental variables included type of stalk material (released generally increased as the length of time the corn stalks were immersed became greater. The presence of P and N constituentsdoi:10.13031/2013.26836 fatcat:todd2zjhwzgaxo37ozxxd6bfaa