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

Marchi, Sidnei Roberto de; Martins, D.; Costa, N.V.; Silva, J. R. V.

doi:10.1590/s0100-83582013000300021

Cited by 8 publications

(10 citation statements)

References 20 publications

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“…One should stress out the greatest reduction of approximately 53%, in the treatment with the sequential application of the 452 + 452 g ha -1 dose of the growth regulator. Marchi et al (2013b) found in the field a reduction of approximately 73% at the height of the Japanese lawn grass at 28 DASA, confirming the results found in this study. Likewise, Ervin et al (2002) and Qian and Engelke (1999) verified that the application of trinexapac-ethyl in Zoysia japonica and Z. matrella reduced plant height, which improved lawn quality.…”

Section: Resultssupporting

confidence: 91%

“…These results corroborate those found by Marchi et al (2013b) and McCullough et al (2007). JHowever, Marchi et al (2015) observed high levels of phytotoxicity with the single applications of trinexapac-ethyl, at seven days after applications (AAD) in St. Augustine grass; at 56 DAA, when the 452, 678 e 904 g ha -1 doses of the growth regulator were applied, producing slight phytoxicity symptoms. )…”

Section: Resultssupporting

confidence: 84%

“…Table 3 shows that the trinexapac-ethyl growth regulator, regardless of the dose and number of applications, significantly reduced the number and height of flower stems of the Japanese lawn grass; these reductions were less accentuated by the application of the 113 + 113 g ha for the height of these stems. Some studies have shown that, with the application of trinexapac-ethyl, there may be a decrease or delay in the emission of inflorescences, maintaining the aesthetics of the lawn for a longer time (Johnson, 1990;Fry, 1991;Costa et al, 2009;Mittlesteadt et al, 2009;Marchi et al, 2013b). Type II growth regulators, which is the case of trinexapac-ethyl, are not efficient in suppressing the emission of floral stems because they interfere with the biosynthesis of gibberellins, thereby reducing cell elongation (Marchi et al, 2013a;Marchi et al, 2014); however, in this study, with Japanese lawn grass, significant effects resulting from its application were observed at high doses.…”

Section: Resultsmentioning

confidence: 99%

“…The use of two sequential doses in a 14 day interval aimed at optimizing the action of the growth regulator in the five species studied, as proposed by Marchi et al (2013b). Visual evaluations of phytotoxicity were performed using a scoring range, where '0' corresponded to no injuries shown by plants and '100' to plant death (SBCPD, 1995).…”

Section: Methodsmentioning

confidence: 99%

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Development of Different Grass Species with the Use of the Growth Regulator Trinexapac-Ethyl

2017

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-The use of synthetic compounds to retard the growth of lawns aims at reducing the number of operations for their maintenance. Thus, the main goal of the present study was to evaluate the effect of different doses of trinexapac-ethyl on the development and rooting of five different grass species. Bahiagrass, St. Augustine grass, Japanese lawn grass, Bermuda grass and, broadleaf carpetgrass were grown in pots of 20 L. The experimental design was completely randomized, with four replications. ) was applied at doses of 113+113, 226+113, 226+226, 452+113, 452+226, 452+452 in a sequential spraying, and also at single doses of 678 and 904. The second application was carried out 14 days after the first. On the day prior to applications all species were cut at 3 cm height. The phytotoxicity evaluations were performed weekly, and evaluations on plant height, number and height of inflorescences, biomass of aerial parts and roots were carried out 35 days after the second application. The trinexapac-ethyl application was effective in inhibiting the development of the Japanese lawn grass, Bermuda grass and broadleaf carpetgrass when applied in sequential doses higher than 226 g ha and, the visual appearance of lawns was not affected. In the case of St. Augustine grass and Bahiagrass species, the growth regulator did not promoted reduction in the growth of both grass species. Keywords: Paspalum notatum, Stenotaphrum secundatum, Zoysia japonica,Cynodon dactylon, Axonopus compressus, plant growth regulator. RESUMO -

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Development of Different Grass Species with the Use of the Growth Regulator Trinexapac-Ethyl

2017

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“…Applications of prohexadione-calcium have shown promise not only in the suppression of shoot growth but also in the emission of inflorescences of some grass species (Marchi et al, 2013a;Marchi et al, 2014;Rademacher, 2014;Marchi et al, 2016). However, studies on the effects of these regulators on the development of lawn roots have generated conflicting results (Maciel et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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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