‘TifEagle’ Bermudagrass Response to Plant Growth Regulators and Mowing Height

McCarty, Lambert B.; Willis, Thomas G.; Toler, Joe E.; Whitwell, Ted

doi:10.2134/agronj2010.0467

Cited by 25 publications

(35 citation statements)

References 31 publications

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“…The use of type II growth regulators generally provides visual symptoms of phytotoxicity when applied in grams (Heckman, et al 2001;McCullough et al 2005;McCarty et al 2011), a similar effect caused by the use of ALS inhibiting herbicides (McDonald et al 2006). Some research has shown that the deleterious effects of injury caused by trinexapac-ethyl and bispyribac-sodium may be rapidly reversed with the use of an additional source of iron or nitrogen, which play an important role in the formation of chlorophyll, which gives back the grass leaves their green coloring (Johnson, 1997, Zhang et al 2002Ervin et al 2004;McDonald et al 2006).…”

Section: O N T R O L C O N T R O Lmentioning

confidence: 99%

“…The occurrence of visual injury, thereby changing the visual quality of the turf, is often reported. Leaf injury varies according to environmental conditions: in temperate regions, dark green spots are observed (Ervin & Koski, 2001;Heckman et al, 2005, McCullough et al, 2006, while discoloration Effect of plant regulators on growth and flowering of 'Meer' ... characterized by yellowing leaves is seen in tropical regions (Heckman et al, 2001, McCullough et al, 2005, McCarty et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: O N T R O L C O N T R O Lmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2013

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“…The leaf injury types vary with environmental conditions if under temperate climatic conditions -dark green spots occur (ERVIN; KOSKI, 2001;HECKMAN et al, 2005;McCULLOUGH et al, 2006); if under tropical conditions, a yellowish discoloring is likely to occur GAUSSOIN, 2001;McCULLOUGH et al, 2005;McCARTY et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of plant regulators on the growth and flowering of Saint Augustine grass plants

Marchi¹,

Martins²,

Costa³

2015

Biosci. J.

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ABSTRACT:The objective of this work was to evaluate the effects of three plant growth inhibitors on the development and emission of floral rachis of Saint Augustine grass [Stenotaphrum secundatum (Walt.) Kuntzel] plants. The study was carried out in a 15 month old lawn with the experimental plots being distributed in accordance with a complete randomized block design with four replications. The treatments consisted of sole application of trinexapac-ethyl (113, 226, 452, 678, and 904 g ai ha -1 ), prohexadione-calcium (100 and 200 g ai ha -1 ), and bispyribac-sodium (40 and 60 g ai ha -1 ) plus a check treatment in which the plants were not submitted to any of the plant growth inhibitors. The effects of those products were evaluated in terms of visual signs of plant intoxication, plant height, emission and height of floral rachises, and chip total dry matter production. All the plant growth inhibitors resulted in visible injury to the plants but these intoxication signs practically disappeared 28 days after the application. Trinexapac-ethyl at the dose of 904 g ai ha -1 reduced plant height by 59.7%, the emission of floral rachis by 96.4%, and the amount of chip dry matter production by 87.7%. Plant growth inhibitors may reduce the number of times of lawn plants cutting up to 119 days after their application with no harmful effects on the plants visual aspect.

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“…None of the visual evaluations showed any symptoms of injury in the plant shoots and zero score of phytotoxicity was assigned to all treatments tested. It is noteworthy that in some studies with type II plant growth inhibitors, as currently tested, toxicity symptoms usually occur when applied to grass (Heckman et al, 2001;McCullough et al, 2005;McCarty et al, 2011), which was not observed in this study.…”

Section: Broadleaf Carpet Grass (Axonopus Compressus)mentioning

confidence: 57%

Use of Prohexadione Calcium on Grass Species Development

2017

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-This study has aimed to evaluate the effect of prohexadione-calcium as a plant growth regulator on growth and quality of Japanese lawn grass, Broadleaf carpet grass and Bermudagrass. The treatments and doses of the prohexadionecalcium tested with two three reapplications were 27.5, 55.0, 110.0, 165.0 and 165.0 g a.i. ha -1 , and a control without application of a growth regulator. Visual injury evaluations were performed using a scale of scores and plant height and chipping dry matter were determined. We have evaluated the total thickness of the sod grass, root length and dry matter of this material at the end of the experimental period. The study was arranged in a completely randomized design with four replications. The results were submitted to analysis of variance by F-test and the averages of the treatments were compared by t test at 5% probability. The prohexadione-calcium plant growth regulator was visually selective and reduced shoot growth of the three species of grass and can thus be used in the management of lawns in gardens and sports areas. As for the production of sod grass, the prohexadione-calcium can be recommended for Japanese lawn grass and Broadleaf sod grass, especially doses 165.0+165.0 and 55.0+55.0+55.0 respectively, because they have provided a better quality sod grass. For Bermudagrass, the effect of the treatments was harmful for the quality of sod grass and is not recommended for production purposes.Keywords: PGR, sequential application, turfgrasses, Zoysia japonica, Axonopus compressus, Cynodon dactylon. , foram: 27,5, 55,0, 110,0, 165,0 RESUMO -O presente trabalho teve por objetivo avaliar o uso do prohexadionecálcio como regulador vegetal sobre o desenvolvimento e a qualidade de tapetes de gramas das espécies Esmeralda, São Carlos e Bermuda. Os tratamentos e doses de prohexadione-cálcio testados, com duas e três reaplicações

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‘TifEagle’ Bermudagrass Response to Plant Growth Regulators and Mowing Height

Cited by 25 publications

References 31 publications

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

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

Effects of plant regulators on the growth and flowering of Saint Augustine grass plants

Use of Prohexadione Calcium on Grass Species Development

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