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DOI: | 10.2134/agronj2010.0372 |
Web URL(s): | https://dl.sciencesocieties.org/publications/aj/articles/103/3/611 Last checked: 11/02/2016 Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Obour, A. K.;
Silveira, M. L.;
Vendramini, J. M. B.;
Jawitz, J.;
O'Connor, G. A.;
Sollenberger, L. E. |
Author Affiliation: | Obour: University of Wyoming; Silveira and Vendramini: Range Cattle Research and Education Center, University of Florida; Sollenberger: Agronomy Department, University of Florida; O'Connor and Jawitz: Soil and Water Science Department, University of Florida |
Title: | A phosphorus budget for bahiagrass pastures growing on a typical Florida spodosol |
Section: | Soil, agronomy & environmental quality Other records with the "Soil, agronomy & environmental quality" Section
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Source: | Agronomy Journal. Vol. 103, No. 3, May/June 2011, p. 611-616. |
Publishing Information: | Madison, WI: American Society of Agronomy |
# of Pages: | 6 |
Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/103/3/611 Last checked: 11/02/2016 Notes: Abstract only |
Keywords: | TIC Keywords: Chemical properties of soil; Fertilization rates; Nutrient availability; Nutritional requirements; Paspalum notatum; Phosphorus fertilizers; Phosphorus uptake; Runoff control; Water quality
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Abstract/Contents: | "Despite evidence that forage crops can access P from the Bh horizon, routine soil testing focus only on P concentrations in the top 15 cm. We evaluated the role of the Bh horizon on the overall P budget for 2 yr in a bahiagrass (Paspalum notatum Flu^D"gge) pasture grown on a Spodosol. Treatments consisted of three P rates (0, 5, and 10 kg ha-1) arranged in a completely randomized design with each plot receiving a basal application of 56 kg N ha-1 and 47 kg K ha-1 Phosphorus application had no effect on bahiagrass P uptake (P = 0.2). Average P mass leached below the 45-cm soil depth was 0.08, 0.08, and 0.09 kg P ha-1 for the 0, 5, and 10 kg P ha-1 treatments, respectively. In 2007, the net balance of P in the Ap horizon was -10.8 kg P ha-1 for the control and -0.8 kg P ha-1 for the 10 kg P ha-1 treatment. The same treatments had net P balances of -6.6 and 7.2 kg ha-1 in 2008. When soil P held in the Bh horizon was included in the P budget computation, the net P balance was positive for all treatments including the control. Results indicate that soil P concentrations were sufficient to maintain bahiagrass production with no additional P fertilization required. Phosphorus held in the Bh horizon is a significant supply of P to low-input pastures growing on Spodosols in Florida and should be considered in nutrient management programs for perennial grasses." |
Language: | English |
References: | 40 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Obour, A. K., M. L. Silveira, J. M. B. Vendramini, J. Jawitz, G. A. O'Connor, and L. E. Sollenberger. 2011. A phosphorus budget for bahiagrass pastures growing on a typical Florida spodosol. Agron. J. 103(3):p. 611-616. |
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| DOI: 10.2134/agronj2010.0372 |
| Web URL(s): https://dl.sciencesocieties.org/publications/aj/articles/103/3/611 Last checked: 11/02/2016 Access conditions: Item is within a limited-access website |
| MSU catalog number: b2212646a |
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