Rate of fall-applied liquid swine manure: effects on runoff transport of sediment and phosphorus

Journal of Environmental Quality
P D GesselM A Schmitt

Abstract

Reducing the delivery of phosphorus (P) from land-applied manure to surface water is a priority in many watersheds. Manure application rate can be controlled to manage the risk of water quality degradation. The objective of this study was to evaluate how application rate of liquid swine manure affects the transport of sediment and P in runoff. Liquid swine manure was land-applied and incorporated annually in the fall to runoff plots near Morris, Minnesota. Manure application rates were 0, 0.5, 1, and 2 times the rate recommended to supply P for a corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] rotation. Runoff volume, sediment, and P transport from snowmelt and rainfall were monitored for 3 yr. When manure was applied at the highest rate, runoff volume and sediment loss were less than the control plots without manure. Reductions in runoff volume and soil loss were not observed for spring runoff when frozen soil conditions controlled infiltration rates. The reduced runoff and sediment loss from manure amended soils compensated for addition of P, resulting in similar runoff losses of total P among manure application rates. However, losses of dissolved P increased with increasing manure application rate for runoff during the s...Continue Reading

Citations

Jan 8, 2008·Journal of Environmental Quality·Brett L Allen, Antonio P Mallarino
Oct 25, 2008·Journal of Environmental Quality·Jaana Uusi-Kämppä, Helvi Heinonen-Tanski
Apr 10, 2008·Journal of Environmental Quality·K R SistaniJ L Oldham
Aug 16, 2017·Journal of Food Protection·Samantha K ÇekiçKeith R Schneider
Dec 18, 2008·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·M ReimanD E Humburg

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