Implications of Repeated Trinexapac‐Ethyl Applications on Kentucky Bluegrass

Lickfeldt, Darin W.; Gardner, David; Branham, B. E.; Voigt, Thomas

doi:10.2134/agronj2001.9351164x

Cited by 54 publications

(55 citation statements)

References 16 publications

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“…Our results indicated that three or more sequential TE applications resulted in more leaf TC. These data and other reports (Ervin and Zhang, 2007;Freddie et al, 2005;Lickfeldt et al, 2001) support the hypothesis that TC may be accumulated more during the period of TE inhibition in order to be used to fuel other sink tissues such as increased tillering, stem growth, or rooting.…”

Section: Total Carbohydrates (Tc)supporting

confidence: 86%

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Effects of Sequential Trinexapac-Ethyl Applications and Traffic on Growth of Perennial Ryegrass (Lolium perenne L.)

Amirikhah¹,

Eetemadi

Nikbakht³

et al. 2015

HST

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Mowing turfgrasses, especially fast growing species like perennial ryegrass, is one of the most time and money consuming tasks of their management. Trinexapac-ethyl (TE) is a popular plant growth regulator used to reduce mowing requirements, improve stress tolerance, and enhance turf quality. This study was conducted to investigate the effect of TE rate and frequency of applications on growth response and traffic tolerance of perennial ryegrass. The experiment was a split-plot laid out in a randomized complete block (RCB) design with three replications. TE was applied to main plots at 0.00, 0.25, and 0.50 kg a.i. ha -1 . Application pattern included an initial application, followed by two sequential applications at 6-wk intervals. Traffic treatment was applied to subplots with a cleated roller. Results demonstrated that TE consistently reduced vertical shoot growth, clippings dry weight, with maximum growth reduction of 59% and 65%, for 0.25 and 0.50 kg a.i. ha , respectively, occurring at 2 weeks after initial TE treatment (WAT). Traffic also dramatically reduced vertical shoot growth and clippings dry weight. Overall, quality of perennial ryegrass was enhanced by sequential TE applications, however, turf quality and surface coverage reduced greatly under traffic, regardless of TE treatment. Total chlorophyll, chlorophyll a and chlorophyll b and total carbohydrates (TC) contents were also positively influenced following sequential TE application. Our results indicated that TE reduces mowing frequency and enhances turf quality rather than influencing traffic resistance.

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Section: Total Carbohydrates (Tc)supporting

confidence: 86%

“…temperatures (Beasley, 2005;Fagerness et al, 2002;Lickfeldt et al, 2001) and reversely decreased TE efficacy at warmer temperature which was associated with an accelerated rate of TE metabolism in the former (Beasley, 2005).…”

Section: Canopy Heightmentioning

confidence: 99%

Effects of Sequential Trinexapac-Ethyl Applications and Traffic on Growth of Perennial Ryegrass (Lolium perenne L.)

Amirikhah¹,

Eetemadi

Nikbakht³

et al. 2015

HST

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“…In contrast, high doses provide better results for longer periods, but with higher levels of injury. This imbalance between efficiency and injury can be solved with sequential applications involving welladjusted doses (Fagerness & Yelverton, 2000;Lickfeldt, et al, 2001, McCarty et al, 2004Waltz Jr. & Whitwell, 2005;Ervin & Zhang, 2007;McCullough et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of plant regulators on growth and flowering of 'Meyer' zoysiagrass

et al. 2013

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This trial aimed to evaluate the effect of sequential applications of different plant regulators over growth and flower rachis emission of 'Meyer' zoysiagrass (Zoysia japonica). The study was conducted on 15-month old green turfgrass under a randomized complete block design with four replications. The following plant regulator and doses were tested: trinexapac-ethyl (113+113, 226+113, 226+226, 452+113, 452+226, 452+452, 678+339 e 904+452 g a.i./ha-1), prohexadione-calcium (100+100 e 200+200 g a.i. ha-1) and bispyribac-sodium (40+40 e 60+60 g a.i. ha-1), as well as an untreated control. The turfgrass was mowed again at 3.0 cm aboveground and the second plant regulator was applied when 'Meyer' zoysiagrass was between 5.0 and 6.0 cm high. The effect of the treatments was visually rated for visual injury, plant height, height and number of flower rachis, and total dry mass production of clippings. Only bispyribac-sodium had visual symptoms of injury on 'Meyer' zoysiagrass, and no intoxication was observed at 28 days after the second application (DAAB). The sequential applications of trinexapac-ethyl, prohexadione-calcium and bispyribac-sodium reduced by more than 80% the total clipping dry mass produced by 'Meyer' zoysiagrass. All the plant regulators tested also showed promising results in reducing the height and emission of rachis, especially when trinexapac-ethyl was applied at the doses 452+452, 678+339 and 904+452 g a.i. ha-1. 'Meyer' zoysiagrass turfgrass can be handled with the sequential application of a plant regulator, which reduces the need for mowing over a period up to 110 days after the application of the second plant regulator, and it also avoids deleterious visual effects over turfgrass.

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“…During all the years of research (2002)(2003)(2004), the growth of grass on plots treated with the regulator, compared to the control, was considerably slow, suppressed by trinexapac-ethyl. Lickfeldt et al (2000) showed that lawns treated with TE demonstrated better quality than lawns where TE had not been applied, regardless of the type of fertilizer used.…”

Section: Resultsmentioning

confidence: 98%

Effects of Trinexapac-Ethyl on Turfg

Czeluscinski¹

2017

Appl Ecol Env Res

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Abstract. The maintenance of grass lawns is not easy, especially in the summer when their use is greatest. The biggest problem during the whole period of vegetation is intense growth of grass. One way to limit it is the use of various types of natural and synthetic growth regulators. In the present study experimental factors included: 1. growth regulator: a) trinexapac-ethyl (TE), b) control object with no TE (C); 2. mineral fertilizers: a) Pokon (N1); b) Travovit Komplet (N2); c) Azofoska (N3); d) speciallyformulated fertiliser (N4). A four-species mixture of grass was used in the experiment. After each mowing to a height of 6 cm (from July to October), grass growth was measured (in centimetres) using the grass height meter. The results showed that trinexapac-ethyl significantly suppressed, in relation to the control, the growth of grass on the lawns. Slower growth contributed to a reduction in mowing frequency by 43%, compared to the control.

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Implications of Repeated Trinexapac‐Ethyl Applications on Kentucky Bluegrass

Cited by 54 publications

References 16 publications

Effects of Sequential Trinexapac-Ethyl Applications and Traffic on Growth of Perennial Ryegrass (Lolium perenne L.)

Effects of Sequential Trinexapac-Ethyl Applications and Traffic on Growth of Perennial Ryegrass (Lolium perenne L.)

Effect of plant regulators on growth and flowering of 'Meyer' zoysiagrass

Effects of Trinexapac-Ethyl on Turfg

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