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DOI: | 10.2135/cropsci2010.09.0515 |
Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2135/cropsci2010.09.0515 Last checked: 03/24/2024 Access conditions: Item is within a limited-access website https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2135/cropsci2010.09.0515 Last checked: 03/24/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Alderman, P. D.;
Boote, K. J.;
Sollenberger, L. E. |
Author Affiliation: | Dep. of Agronomy, Univ. of Florida, Gainesville, FL |
Title: | Regrowth dynamics of 'Tifton 85' bermudagrass as affected by nitrogen fertilization |
Section: | Crop physiology & metabolism Other records with the "Crop physiology & metabolism" Section
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Source: | Crop Science. Vol. 51, No. 4, July 2011, p. 1716-1726. |
Publishing Information: | Madison, WI: Crop Science Society of America |
# of Pages: | 11 |
Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/51/4/1716 Last checked: 11/04/2016 Notes: Abstract only |
Keywords: | TIC Keywords: Cultivar evaluation; Cynodon; Fertilization rates; Fertilizer evaluation; Growth analysis; Nitrogen fertilization; Regrowth studies; Seasonal variation
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Cultivar Names: | Tifton 85 |
Abstract/Contents: | "'Tifton 85' bermudagrass (Cynodon spp.) has been widely adopted as a forage and hay crop and is being considered as a cellulosic ethanol feedstock. The objective of this study was to evaluate the effects of N fertilization rate on Tifton 85 regrowth dynamics. A field study was conducted near Gainesville, FL, on established Tifton 85 in 2006 and 2007. The treatments were N rates of 0, 45, 90, and 135 kg N ha-1 regrowth period-1. Tissue mass, leaf:stem ratio, and tiller number and mass were measured weekly during 28-d regrowth periods. Leaf mass followed logistic time trends with the upper asymptote varying between 50 and 225 g m-2 depending on N rate and season (summer and autumn). Stem mass lagged behind leaf mass for 7 to 14 d, subsequently following linear or quadratic time trends to reach between 75 and 300 g m-2 by 28 d. Increasing N rate from 0 to 135 kg ha-1 period-1 increased tiller mass at 28 d from 1.5 to 3 g tiller-1 in summer and 1 to 1.5 g tiller-1 in autumn. Leaf:stem ratio increased to 1.0 within 14 to 21 d, followed by a subsequent decrease. Rhizome and root mass were not affected by N fertilization. Increasing N rate primarily affected mass and proportion of above-ground plant parts, with little effect on mass of below-ground parts. Nitrogen nutrition index values were similar whether calculated from samples taken to a 10-cm stubble height or from samples taken to the soil surface. Regrowth was not enhanced by N rate beyond 90 kg N ha-1 regrowth period-1." |
Language: | English |
References: | 39 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Alderman, P. D., K. J. Boote, and L. E. Sollenberger. 2011. Regrowth dynamics of 'Tifton 85' bermudagrass as affected by nitrogen fertilization. Crop Sci. 51(4):p. 1716-1726. |
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| DOI: 10.2135/cropsci2010.09.0515 |
| Web URL(s): https://acsess.onlinelibrary.wiley.com/doi/10.2135/cropsci2010.09.0515 Last checked: 03/24/2024 Access conditions: Item is within a limited-access website https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2135/cropsci2010.09.0515 Last checked: 03/24/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2211522a |
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