Full TGIF Record # 180342
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Heymann, K.; Xing, B.; Ebdon, J. S.
Author Affiliation:Department of Plant, Soil and Insect Sciences, University of Massachusetts-Amherst
Title:The effects of dissolved organic matter on phosphate mobility in leachate on USGA greens
Section:Pesticide fate research
Other records with the "Pesticide fate research" Section
Meeting Info.:South Deerfield, Massachusetts: June 20, 2007
Source:University of Massachusetts Turf Research Field Day. 2007, p. 171-174.
Publishing Information:Amherst, MA: University of Massachusetts
# of Pages:4
Keywords:TIC Keywords: Carbon; Golf greens; Natural organic fertilizers; Organic matter; Phosphate losses; Synthetic organic fertilizers; Urea
Abstract/Contents:"Field plots were established to compare the effects of two natural organic fertilizers (Milorganite 6-2-0, Nature Safe 8-3-5) and one synthetic organic fertilizer (Scotts Fluid 18-3-6, 50% SRN) on concentrations of dissolved organic carbon and phosphate in turfgrass soil leachates. USGA sand root zones were constructed with a lysimeter placed in the center of each of nine 5 by 5 ft plots (see plot plan map). Root zones were planted using Penncross creeping bentgrass sod in the fall of 2005. A main drainage line of copper tubing ran from each lysimeter to a glass collection jar in a collection pit dug adjacent to collection plots (see schematic). In total, fertilizer treatments were applied three times over the course of the 2006 growing season at an N rate of 1.0 lb N 1000ft-2 per application. After each application, 1.0 inch of irrigation was applied in order to promote leaching and to simulate sudden, heavy rainfall. Overall, turfgrass plots treated with synthetic fertilizer (Scotts Fluid 18-3-6) yielded higher dissolved organic carbon (DOC) concentration than those treated with natural organic fertilizers. Although phosphate concentrations in fertilizer as P2O5 was highest for Nature Safe, phosphate concentration in leachate were significantly higher in plots treated with Milorganite than all other treatments. Phosphate concentrations were positively correlated with DOC concentrations (mg L-1) recovered (Figure 1) and exceed the 0.024 mg L-1 PO4 concentration considered to be favorable for eutrophication. Elevate phosphorous concentrations may be of concern where greens are situated in close proximity to ponds or streams, or where eutrophication is an existing problem in the local watershed. Natural organic fertilizer derived from biosolids may not necessarily provide maximum protection from nutrient leaching or runoff compared to synthetic organic fertilizer."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Heymann, K., B. Xing, and J. S. Ebdon. 2007. The effects of dissolved organic matter on phosphate mobility in leachate on USGA greens. p. 171-174. In University of Massachusetts Turf Research Field Day. South Deerfield, Massachusetts: June 20, 2007. Amherst, MA: University of Massachusetts.
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