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| DOI: | 10.2134/agronj2010.0330 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/abstracts/103/2/324
Last checked: 11/03/2016 |
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| Publication Type:
| Refereed |
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| Author(s): | Obour, A. K.;
Vendramini, J. M. B.;
Silveira, M. L.;
Sollenberger, L. E.;
O'Connor, G. A.;
Jawitz, J. W. |
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| Author Affiliation: | Obour, Vendramini, Silveira: Range Cattle Research and Education Center, University of Florida |
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| Title: | Phosphorus ferilization responses on bahiagrass pastures: Forage production and water quality |
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| Section: | Soils, agronomy & environmental quality
Other records with the "Soils, agronomy & environmental quality" Section
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| Source: | Agronomy Journal. Vol. 103, No. 2, March/April 2011, p. 324-330. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 7 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/103/2/324
Last checked: 12/06/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Cultivar evaluation; Fertilization rates; Fertilizer costs; Forage; Paspalum notatum; Phosphorus fertilizers; Phosphorus uptake; Sampling; Water quality
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| Abstract/Contents: | "The increased cost of fertilizer and concerns about environmental impacts have led to a reduction in P use in grazed pastures in Florida; however, P fertilization may be necessary to sustain bahiagrass (Paspalum notatum Flügge) pastures. This study evaluated the impacts of reduced P fertilization on forage characteristics, soil and leachate P concentrations on bahiagrass pastures during 2007 and 2008. Treatments consisted of three P fertilization level (0, 5, and 10kg P ha-1, applied as KH2PO4) arranged in a randomized complete block design with four replicates. Twelve 1.2-ha bahiagrass pastures were stocked continuously with a fixed stocking rate of two beef heifers [Bos sp; 380 ^D+- 30kg live weight (LW)] per experimental unit. Forage was sampled at 14-d intervals for herbage mass (HM), crude protein (CP), and in vitro digestible organic matter (IVDOM) concentrations. Two suction lysimeters were installed at 60- and 90-cm depth to monitor leachate P. Phosphorus fertilization did not affect HM (4.4 Mg ha-1), herbage accumulation rate (HAR, 43 kg ha-1d-1), CP (94g kg-1), or IVDOM (500g kg-1). Tissue P concentrations increased from 1.9 to 2.2g kg-1 as P fertilization increased from 0 to 10kg P ha-1. Soil P concentration in the Ap (7mg kg-1) and Bh horizons (23 mg kg-1) and leachate P concentration (0.06 mg L-1) were not affected by P application. Despite the lack of yield response to P fertilization, P application at levels of 5 and 10 kg P ha-1 showed no impacts on water quality." |
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| Language: | English |
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| References: | 35 |
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| Note: | Tables Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Obour, A. K., J. M. B. Vendramini, L. E. Sollenberger, G. A. O'Connor, J. W. Jawitz, M. L. Silveira, et al. 2011. Phosphorus ferilization responses on bahiagrass pastures: Forage production and water quality. Agron. J. 103(2):p. 324-330. |
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| DOI: 10.2134/agronj2010.0330 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/abstracts/103/2/324
Last checked: 11/03/2016 |
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MSU catalog number: b2212646a |
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