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| Web URL(s): | http://www.ars.usda.gov/SP2UserFiles/person/3013/King27.pdf
Last checked: 07/09/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Baker, B. J.;
King, K. W.;
Torbert, H. A. |
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| Author Affiliation: | Baker: Soil Scientist; King: Agricultural Engineer, USDA-ARS Soil Drainage Research Unit, Columbus, Ohio; Torbert: USDA-ARS National Soil Dynamics Laboratory, Auburn, Alabama |
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| Title: | Runoff losses of dissolved reactive phosphorus from organic fertilizer applied to sod |
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| Section: | Soil and water
Other records with the "Soil and water" Section
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| Source: | Transactions of the ASABE. Vol. 50, No. 2, March/April 2007, p. 449-454. |
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| Publishing Information: | St. Joseph, MI: American Society of Agricultural and Biological Engineers |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.ars.usda.gov/research/publications/publications.htm?seq_no_115=189383
Last checked: 07/09/2013
Notes: Abstract only |
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| Keywords: | TIC Keywords: Fertilization; Leaching; Organic fertilizers; Phosphorus; Surface runoff
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| Abstract/Contents: | "Fertilizers are often applied according to nitrogen requirement; however, recent evidence suggests that phosphorus (P) may pose as much, if not more, of an environmental threat. The objective of this research was to quantify the differences in phosphate-phosphorus losses in runoff from two organic fertilizers (poultry litter and composted dairy manure) and one inorganic fertilizer control, applied at a uniform nitrogen rate (187.3 kg ha-1 ). The P concentration in the poultry litter (PL) was 2.5%, while the P concentration in the composted dairy manure (CDM) was 0.5%. The fertilizers were applied to run-over troughs filled with Austin clay soil planted with Bermuda grass ( Cynodon dactylon L. Pers.). Water dispersion devices supplied runoff at a rate equivalent to 125 mm h-1 . Runoff was simulated for 30 min every 7 days for a period of 10 weeks. Runoff was analyzed for quantity and PO4-P concentration. Results from the PO4-P concentration and load data show that PL had greater loss during the first runoff event, while CDM did not vary significantly (p > 0.05) from the control. This pattern continued for the first 4 weeks, but during the following weeks none of the treatments showed a difference. Comparison of cumulative losses over the 10 weeks showed that PL lost a larger proportion of its initial P application than did CDM. Composted dairy manure did not have a greater cumulative loss compared to the control. Poultry litter with its high initial P concentration lost a disproportionately larger amount of PO4-P in runoff compared to CDM with its low initial P concentrations." |
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| Language: | English |
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| References: | 26 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baker, B. J., K. W. King, and H. A. Torbert. 2007. Runoff losses of dissolved reactive phosphorus from organic fertilizer applied to sod. Trans. ASABE. 50(2):p. 449-454. |
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| Web URL(s):
http://www.ars.usda.gov/SP2UserFiles/person/3013/King27.pdf
Last checked: 07/09/2013
Requires: PDF Reader |
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MSU catalog number: S 671 .A452 |
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