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| Web URL(s): | http://crops.confex.com/crops/2005am/techprogram/P5668.HTM
Last checked: 01/31/2006 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Soldat, D.;
Petrovic, A. M. |
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| Author Affiliation: | Cornell University |
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| Title: | Predicting runoff P losses from turfgrass with soil testing |
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| Section: | Graduate student oral competition: Breeding, fertility, environment, and management
Other records with the "Graduate student oral competition: Breeding, fertility, environment, and management" Section
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| Meeting Info.: | Salt Lake City, UT: 7-10 November, 2005 |
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| Source: | 2005 Annual Meeting Abstracts [ASA/CSSA/SSSA/CSSS]. 2005, p. [1]. |
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| Publishing Information: | [Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Phosphorus; Surface runoff; Losses from soil systems; Soil testing; Eutrophication; Calcium chloride
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| Abstract/Contents: | "Phosphorus (P) loss via runoff from agricultural fields has been identified as an important contributor to freshwater eutrophication. However, eutrophication is also evident in many non-agricultural watersheds. Managed turfgrass areas can constitute a significant portion of these watersheds, and therefore runoff P losses from turfgrass are of interest. This study was conducted to examine the relationship between P in runoff from turfgrass and Mehlich 3, Morgan, and 0.01 M CaCl2 extractable soil P. The effect of sampling depth was also examined. A second objective was to identify a common environmental threshold for New York and areas with similar soils above which P losses in runoff become unacceptable. A miniature rainfall simulator was used to generate runoff from turfgrass on six different soil types around NY exhibiting a wide range of soil P levels. At each site sod was stripped and runoff also generated from bare soil. The results of the study suggest that P in runoff is predicted better by a 0-2 or 0-5 cm sample than a 0-15 cm sample. Also, the unconventional 0.01 M CaCl2 extractant did not predict runoff P losses any better than the common agronomic extractants. Soil test P predicted runoff P at all six sites for bare soil plots, but runoff P was predicted by soil test P by 4 of 6 sites for turfgrass plots. Comparison of runoff from turfgrass and from bare soil on plots with similar soil P levels indicates that at low P levels (<5 mg P kg-1, Morgan 5cm) P concentrations are higher in runoff from turfgrass than bare soil, presumably due to plant contributions of P. While at high levels of soil P (>10 mg P kg-1, Morgan 5cm) P concentrations in runoff are lower from turfgrass than from bare soil." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Soldat, D., and A. M. Petrovic. 2005. Predicting runoff P losses from turfgrass with soil testing. Annu. Meet. Abstr. p. [1]. |
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Last checked: 01/31/2006 |
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