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| DOI: | 10.21273/HORTSCI.41.2.453 |
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| Web URL(s): | https://journals.ashs.org/hortsci/view/journals/hortsci/41/2/article-p453.xml?rskey=cF9OSr
Last checked: 11/19/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | McCullough, Patrick E.;
Liu, Haibo;
McCarty, Lambert B.;
Whitwell, Ted;
Toler, Joe E. |
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| Author Affiliation: | McCullough: Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; Liu, McCarty, and Whitwell: Department of Horticulture, Clemson University, Clemson, South Carolina; Toler: Department of Applied Economics and Statistics, Clemson University, Clemson, South Carolina |
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| Title: | Growth and nutrient partitioning of 'TifEagle' bermudagrass as influenced by nitrogen and trinexapac-ethyl |
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| Section: | Turf management
Other records with the "Turf management" Section
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| Source: | HortScience. Vol. 41, No. 2, April 2006, p. 453-458. |
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| Publishing Information: | Alexandria, VA: American Society for Horticultural Science |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Growth; Nutrients; Partitioning; Cynodon dactylon; Cynodon transvaalensis; Nitrogen; Trinexapac-ethyl; Application rates; Rooting; Clipping weight; Chlorophyll content; Turfgrass quality; Growth regulators
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| Cultivar Names: | TifEagle |
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| Abstract/Contents: | "Dwarf-type bermudagrass [Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt-Davey] tolerate long-term golf green mowing heights but require heavy nitrogen (N) fertilizations. Inhibiting leaf growth with trinexapac-ethyl (TE) could reduce shoot growth competition for root reserves and improve nutrient use efficiency. Two greenhouse experiments evaluated four N levels, 6 (N6), 12 (N12), 18 (N18), and 24 (N24) kg N/ha/week, with TE at 0 and 0.05 kg·ha-1 a.i. every 3 weeks to assess rooting, nutrient allocation, clipping yield, and chlorophyll concentration of 'TifEagle' bermudagrass grown in PVC containers built to U.S. Golf Association specification. Trinexapac-ethyl enhanced turf quality on every date after initial application. After 8 weeks, high N rates caused turf quality decline; however, TE treated turf averaged about 25 % higher visual quality from nontreated turf, masking quality decline of high N fertility. 'TifEagle' bermudagrass treated with TE had clippings reduced 53% to 61% from non-TE treated. After 16 weeks, bermudagrass treated with TE over all N levels had 43% greater root mass and 23% enhanced root length. Compared to non-TE treated turf, leaf N, P, and K concentrations were consistently lower in TE treated turf while Ca and Mg concentrations were increased. Root N concentrations in TE treated turf were 8% to 11% higher for N12, N18, and N24 fertilized turf than respective N rates without TE. Compared to non-TE treated turf, clipping nutrient recoveries were reduced 69% to 79% by TE with 25% to 105% greater nutrients recovered in roots. Bermudagrass treated with TE had higher total chlorophyll concentrations after 8 and 12 weeks. Overall, inhibiting 'TifEagle' bermudagrass leaf growth appears to reallocate nutrients to below-ground tissues, thus improving nutrient use efficiency and root growth. Chemical name used: trinexapac-ethyl, [4-(cyclopropyl-[α]-hydroxymethylene)-3,5-dioxo-cyclohexa carboxylic acid ethylester]." |
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| Language: | English |
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| References: | 15 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCullough, P. E., H. Liu, L. B. McCarty, T. Whitwell, and J. E. Toler. 2006. Growth and nutrient partitioning of 'TifEagle' bermudagrass as influenced by nitrogen and trinexapac-ethyl. HortScience. 41(2):p. 453-458. |
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| DOI: 10.21273/HORTSCI.41.2.453 |
| Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/41/2/article-p453.xml?rskey=cF9OSr
Last checked: 11/19/2019
Requires: PDF Reader |
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MSU catalog number: SB 1 .H64 |
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