Fastlink to record 310844
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| Full TGIF Record # 310844 Item 1 of 1 |
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| Web URL(s): | https://archive.lib.msu.edu/tic/ressum/2019/2019.pdf#page=155 Last checked: 04/17/2020 Requires: PDF Reader Notes: Item is within a single large file |
| Publication Type: | Report |
| Author(s): | Kreuser, William C. |
| Author Affiliation: | University of Nebraska-Lincoln |
| Title: | Growing degree day models to guide PGR application rates |
| Section: | Integrated turfgrass management Other records with the "Integrated turfgrass management" Section Ecophysiology: Light and temperature Other records with the "Ecophysiology: Light and temperature" Section |
| Source: | Turfgrass and Environmental Research Program: 2019 Research Summaries. 2019, p. 147-149. |
| Publishing Information: | [New York, New York]: The United States Golf Association Green Section |
| # of Pages: | 3 |
| Keywords: | TIC Keywords: Application rates; Dwarf bermudagrasses; Golf fairways; Golf greens; Growing degree days; Models; Plant growth regulators |
| Language: | English |
| References: | 0 |
| See Also: | Other Reports from this USGA research project: 2018-09-659 |
| Note: | Pictures, color Graphs |
| USGA Summary Points: | Developed PGR GDD models for three cultivars of ultradwarf bermudagrass putting greens in NC, MS and TN with our collaborators. Peak suppression for prohexadione-calcium ranged from 50-45% with ideal re-application intervals of 120-160 GDD (base 10C). Peak suppression ranged from 49-62% with re-application intervals ranging from 216-300 GDD (base 10C) for trinexapac-ethyl. Warm-season results were published in Crop Science. Results have been added to GreenKeeper App. Developed PGR GDD models for paclobutrazol applications on creeping bentgrass putting greens. Clipping yield suppression ranged from 29-62% of the non-treated control depending on application rate. The ideal re-application interval ranged from 269-302 (base 0C) and model R2 values ranged from 0.41 to 0.86. Results have been added to GreenKeeper App. "Flipped" PGR models were tested to estimate the amount of PGR remaining in the plant when the PGRs were applied prior to their ideal re-application interval. A half-life approach model was used to schedule PGR application rate. The models tested resulted in an intensification of clipping yield suppression and increase phytotoxicity overtime. This indicates the models were too aggressive. A different PGR degradation model will be evaluated in 2020. |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | Kreuser, W. C. 2019. Growing degree day models to guide PGR application rates. USGA Turfgrass Environ. Res. Summ. p. 147-149. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/310844 |
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| Web URL(s) : | https://archive.lib.msu.edu/tic/ressum/2019/2019.pdf#page=155 Last checked: 04/17/2020 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: | b3609415 |
| Find from within TIC: | Digitally in TIC by file name: atrre2019 |
| InterLibrary Loan: | Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
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