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| Full TGIF Record # 317061 Item 1 of 1 |
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| Web URL(s): | https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/139229 Last checked: 03/28/2022 Requires: JavaScript |
| Publication Type: | Report |
| Content Type: | Abstract or Summary only |
| Author(s): | Peppers, John; McElroy, J. Scott; Askew, Shawn D. |
| Author Affiliation: | Peppers: Crop, Soil and Environmental Science, Virginia Tech, Blacksburg, VA; McElroy: Auburn University, Auburn, AL; Askew: Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA |
| Title: | Utilizing plant growth regulators to differentially suppress annual grass weeds in creeping bentgrass putting greens |
| Section: | Turfgrass pest management oral I (includes student competition) Other records with the "Turfgrass pest management oral I (includes student competition)" Section C05 turfgrass science Other records with the "C05 turfgrass science" Section |
| Meeting Info.: | Salt Lake City, Utah: November 7-10, 2021 |
| Source: | ASA, CSSA and SSSA International Annual Meetings. 2021, p. 139229. |
| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
| # of Pages: | 1 |
| Abstract/Contents: | "Control of goosegrass and smooth crabgrass in creeping bentgrass putting greens is difficult due to a lack of selective herbicides that safely offer control of these grasses. Based on preliminary studies, we theorize that early-GA-inhibiting PGRs will reduce the overall competitiveness of goosegrass and smooth crabgrass in creeping bentgrass putting greens. Our objective was to compare goosegrass and smooth crabgrass germination, plant height and plant biomass when treated with typical PGRs utilized in creeping bentgrass putting greens. In 2021, a greenhouse evaluation was conducted in Blacksburg, VA evaluating goosegrass and smooth crabgrass response to PGRs. This study was arranged as a RCBD with 18 treatments and six reps per run. Four PGRs were applied either PRE only or PRE plus POST. The PGRs evaluated were flurprimidol (0.28 g ai ha-1), paclobutrazol (0.28 g ai ha-1), trinexapac-ethyl (0.05 g ai ha-1), and prohexadione-calcium (0.14 g ai ha-1). Two weeks after the final POST treatment, plant heights, counts and dry biomass were recorded. All data were analyzed using PROC GLM and Fisher's Protected LSD (α<0.05) was utilized for means separation. At the conclusion of the trial, PRE plus POST applications of flurprimidol and paclobutrazol reduced the height of goosegrass and smooth crabgrass greater than all other treatments. Single and sequential applications of flurprimidol and paclobutrazol significantly reduced smooth crabgrass germination compared to the nontreated. Neither trinexapac-ethyl nor prohexadione-calcium reduced the germination of smooth crabgrass. Similar trends were observed in the biomass of goosegrass and smooth crabgrass. No PRE only treatment significantly decreased goosegrass or smooth crabgrass biomass. PRE plus POST applications of flurprimidol and paclobutrazol reduced goosegrass and smooth crabgrass biomass more than all other treatments. From this study we can conclude that early-GA-inhibiting PGRs reduce goosegrass and smooth crabgrass height and biomass to a greater extent than late-GA-inhibiting PGRs." |
| Language: | English |
| References: | 0 |
| Note: | This item is an abstract only! "47-5" |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | Peppers, J., J. S. McElroy, and S. D. Askew. 2021. Utilizing plant growth regulators to differentially suppress annual grass weeds in creeping bentgrass putting greens. Agron. Abr. p. 139229. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/317061 |
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| Web URL(s) : | https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/139229 Last checked: 03/28/2022 Requires: JavaScript |
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