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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/94/1/48
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https://dl.sciencesocieties.org/publications/aj/articles/94/1/48
Last checked: 12/15/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Gelderman, Ron H.;
Gerwing, James R.;
Twidwell, Edward |
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| Author Affiliation: | Gelderman and Gerwing: Plant Science Department, South Dakota State University, Brookings, SD; and Twidwell: Louisiana State University, Baton Rouge, LA |
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| Title: | Point-injected phosphorus effects on established cool-season grass yield and phosphorus content |
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| Section: | Soil fertility
Other records with the "Soil fertility" Section
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| Meeting Info.: | Salt Palace Convention Center, Salt Lake City, Utah: November 3, 1999 |
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| Source: | Agronomy Journal. Vol. 94, No. 1, January/February 2002, p. 48-51. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Phosphorus; Cool season turfgrasses; Phosphorus fertilizers; Surface runoff; Subsurface application; Comparisons; Yield response functions; Yield response; Bromus inermis; Stipa comata; Dactylis glomerata; Poa pratensis
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| Abstract/Contents: | "Phosphorus applied to established grass has been shown to increase forage yield. However, broadcast P applications could result in more P runoff to surface waters compared with subsurface P application. A field study was conducted to evaluate if subsurface point-injected P is more effective than surface-applied P at increasing forage yield and tissue P concentration for established grass. Nine site-years with very low P soil tests and long-term (>10 yr) established cool-season grass stands were utilized. Fertilizer treatments were no fertilizer P and 29 kg P ha-1 [66 kg ha-1 phosphoric oxide (P2O5)] applied on the surface or point-injected beneath the surface. Fertilizer P significantly increased dry matter yields at four site-years. Placement of P did not influence forage yields at the P responsive sites, except for one site-year. Forage P concentration was increased by added P at seven of nine site-years. Forage P concentrations from point-injected P treatments were lower compared with broadcast P at five of the seven P responisve site-years. Results of this study suggest that point-injected P offers no advantage over surface-applied P for increasing forage yield or P concentration of established cool-season grass stands." |
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| Language: | English |
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| References: | 18 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gelderman, R. H., J. R. Gerwing, and E. Twidwell. 2002. Point-injected phosphorus effects on established cool-season grass yield and phosphorus content. Agron. J. 94(1):p. 48-51. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/94/1/48
Last checked: 12/15/2016
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Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/articles/94/1/48
Last checked: 12/15/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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