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

Marchi, Sidnei Roberto de; Martins, D.; Costa, Nivan B. da

doi:10.14393/bj-v31n3a2015-26093

Cited by 4 publications

(11 citation statements)

References 18 publications

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“…In a similar study with trinexapac-ethyl application for the same species, Marchi et al (2015) observed a reduction of up to 61% at 28 DAA, which does not corroborate the results found by the present research; as for the accumulation of dry mass in the aerial part and in the roots of the St. Augustine grass, the application of the different doses of the growth regulator did not produce any effects. Regarding the aesthetics of the grass, the reduction in inflorescence populations or their absence improves the appearance of the landscape for a long period, besides also reducing the need for lawn mowing.…”

Section: Resultscontrasting

confidence: 97%

“…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. ) up to the 14 DASA (days after the second application), but no effects were observed from 21 DASA.…”

Section: Resultssupporting

confidence: 86%

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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: Resultscontrasting

confidence: 97%

Section: Resultssupporting

confidence: 86%

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

2017

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“…Likewise, Marchi et al (2015) have observed that prohexadione-Ca in doses of 100 and 200 g ha was efficient in reducing growth of St. Augustine grass (Stenotaphrum secundatum), suggesting that the number of mechanical cuts in the lawn may be avoided for a period of up to 119 DAA. As for the total sod grass thickness and without shoots, it was higher when applying the triple sequential dose of 55 g ha -1 of prohexadione-Ca (Table 3).…”

Section: Broadleaf Carpet Grass (Axonopus Compressus)mentioning

confidence: 96%

“…Some research studies have shown that when initial phytotoxicity symptoms by some growth regulators occur, they rapidly dissipate over time without causing greater damage, as observed by Marchi et al (2015) with the application of trinexapac-ethyl, bispyribac-sodium and prohexadione-Ca in the St. Augustine grass (Stenotaphrum secundatum).…”

Section: Broadleaf Carpet Grass (Axonopus Compressus)mentioning

confidence: 99%

“…In some studies it was also recorded that sequential applications of this growth regulator provided reductions in the total amount of dry matter of chippings produced by different species of grass (Cynodon dactylon versus C. transvaaliensis, Stenotaphrum secundatum, Axonopus compressus and Zoysia japonica), which can contribute to the management of lawns, reducing the need for several cuts during the summer (Costa et al, 2009;Marchi et al, 2014Marchi et al, , 2015. In another study, Beam and Askew (2005) have also noticed that prohexadione-Ca in doses between 140.0 and 670.0 g a.i.…”

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confidence: 99%

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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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Use of the imazapic herbicide applied alone or tank mix with imazapyr as growth regulator of lawns

2021

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Successive mowing are the major maintenance costs of lawns. Thus, both the expenditure with mowing and the visual and physiological aspect of the lawn have led to the search for alternatives to mechanical management. Thus, this work aimed to study the effects of different rates of imazapic herbicide applied alone or combined with imazapyr as a growth regulator of Bahiagrass (Paspalum notatum) and St. Augustine grass (Stenotaphrum secundatum). The experimental design was a randomized block with four replicates, and the treatments consisted of six rates of imazapic herbicide (35; 70; 105; 140; 175 and 210 g a.i. ha-1) for both species, three rates of imazapic + imazapyr in tank mix (15.57 + 5.25; 23.625 + 7.875; 32.5 + 10.5 g a.i. ha-1) for Bahiagrass and four rates of imazapic + imazapyr mixture (7.875 + 2.625; 15.57 + 5.25; 23.625 + 7.875; 32.5 + 10.5 g a.i. ha-1) for St. Augustine grass. The effect of the treatments was evaluated by observing visible injury symptoms, canopy height, height and number of inflorescences and total dry matter of clippings. Applications of imazapic alone or combined with imazapyr were effective in reducing plant height, number and height of inflorescences and total amount of dry matter of clippings produced by Bahiagrass plants. Imazapic provided satisfactory control of St. Augustine growth, but its utilization caused an increase in the number of inflorescences present in the lawns.

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

Cited by 4 publications

References 18 publications

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

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

Use of Prohexadione Calcium on Grass Species Development

Use of the imazapic herbicide applied alone or tank mix with imazapyr as growth regulator of lawns

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