Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 January 2007
Published in Agron J 99:141-147 (2007)
DOI: 10.2134/agronj2005.0334
© 2007 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Phosphorus and Sediment in Runoff after Core Cultivation of Creeping Bentgrass and Perennial Ryegrass Turfs

Gordon L. Kauffman, IIIa,* and Thomas L. Watschkeb

a Turfgrass Management, 932 McCormick Ave. East, State College, PA 16801
b P.O. Box 350, Crystal Beach, FL 34681


Figure 1
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Fig. 1. Mean PO43––P concentrations found in irrigation water and surface runoff for the 12 June 1999 core cultivation date (Evaluation 2). Error bars represent standard error of the means. DAT = days after fertilizer treatment. Significant effect of time (P < 0.0001) and species (P = 0.035) for Evaluation 2.

 

Figure 2
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Fig. 2. Mean PO43––P export in surface runoff for all evaluations. Error bars represent standard error of the means. {dagger}Means for a single evaluation followed by a different letter are significantly different (P < 0.05) using Fisher's LSD t-test.

 

Figure 3
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Fig. 3. Average potential soil loss in runoff from core-cultivated turfgrass plots. Error bars represent standard error of the means. {dagger}Means for a single evaluation followed by a different letter are significantly different (P < 0.05) using Fisher's LSD t-test.

 





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