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

Marchi, Sidnei Roberto de; Silva, Antonio Carlos da; Martins, D.

doi:10.1590/s0100-83582017350100071

Cited by 3 publications

(4 citation statements)

References 20 publications

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“…On the other hand, other growth regulators such as Trinexapac-ethyl in different doses had no effect on reducing dry mass for studied species (Marchi et al, 2017), as well as Prohexadione-calcium in split applications (Marchi et al ., 2016). When a product is used as a growth regulator, it is essential that it does not decrease leaf chlorophyll concentration (Gazola et al, 2016), as this will affect the turfgrass physiological processes, as well as green colour characteristic (Santos et al, 2019), and the relative chlorophyll index (RCI) results demonstrate this fact (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

“…Studies on Brazilian conditions for growth control in Bahiagrass have been published in recent years (Marchi et al, 2016;Marchi et al, 2017;Barbosa et al, 2017;Dias et al, 2019), however none of them use Paclobutrazol as a growth regulator. In this context, the objective of the present study was to evaluate the use of Paclobutrazol doses as growth regulators in Bahiagrass.…”

Section: Introductionmentioning

confidence: 99%

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Paclobutrazol as growth regulator in Bahiagrass

et al. 2020

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Bahiagrass (Paspalum notatum) is a native species widely found on highways margins, however, cutting practices are necessary, which increase the maintenance cost, being an alternative, the use of growth regulators, such as Paclobutrazol. Thus, the objective of the present study was to evaluate the use of Paclobutrazol doses as growth regulator in Bahiagrass. The turf was implanted in black plastic containers (8.46 L), previously prepared with the mixture of soil + sand + organic compost (1:1:1). The experimental design was completely randomized, composed of 3 doses of Paclobutrazol [1.1 and 2.2 kg a.i. (active ingredient) ha-1 + control (0 kg a.i. ha-1)], in four applications of 2 L of syrup per container, thus forming a factorial 3x4 (doses x response time) with 3 repetitions. The fresh and dry mass, relative chlorophyll index, leaf N and the visual aspect of the green cover rate were evaluated on four different dates. It was observed that the product controlled the growth of the lawn, with less production of fresh and dry mass, and increase of the relative index of chlorophyll and concentration of leaf nitrogen; however, it decreased turfgrass density of green mass, which influenced the visual lawn aspect. Thus, Paclobutrazol controlled Bahiagrass growth at a dose of 2.2 Kg a.i. ha-1 in regular applications of 30 to 45 days, however it affected the density and consequently the aesthetics of the turfgrass.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Paclobutrazol as growth regulator in Bahiagrass

et al. 2020

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“…However, according to Kreuser (2015), mowing may be difficult due to the embankment slope, and also, resulting in higher expenses (Santos and Castilho, 2018). Thus, an alternative to this management would be the use of plant growth regulators (Dinalli et al, 2015;Marchi et al, 2017;Dias et al, 2019;Gazola et al, 2019). It has the function slower the plant growth, without causing visible damage, such as necrotic spots of phytotoxicity, discoloration or thinning, but allowing the maintenance of its aesthetics and characteristic green colour (Gazola et al, 2016;Dias et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…It is a compound of triazole group and reduces plant growth by blocking the action of the enzyme ent-kaurene oxidase, which inhibits the conversion of ent-kaurene to ent-kaurenol, which prevents the formation of any type of gibberellin (Glab et al, 2020). On the other hand, for several products such as trinexapac-ethyl and prohexadione-calcium and the herbicides, imazethapyr, metsulfuron-methyl, imazaquin and glyphosate (Dinalli et al, 2015;Marchi et al, 2017;Queiroz et al, 2017;Dias et al, 2019;Gazola et al, 2019) there are reports as being used in lawns for growth control. However, for phenoxaprope-P-ethyl (post-emergent selective herbicide, which has phenoxaprope-P-ethyl as an active ingredient, which acts as an ACCase enzyme inhibitor) (Bayer, 2019) there is no use for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Paclobutrazol and phenoxaprope-P-ethyl potential as growth regulator in Carpet grass Plus®

et al. 2020

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Mowing is a fundamental management for turfgrass development. However, this operation has a higher cost, requiring alternatives to mechanical handling, such as growth regulators use. Thus, the objective was to evaluate the use of paclobutrazol and phenoxaprope-P-ethyl as growth regulators in Carpet grass Plus®. The experiment was performed in full sun, in the northwest region of São Paulo state, from January to March 2020. The grass used was planted in black plastic containers (50 x 17 cm, with a height of 15 cm, totalling 11 L of volume), previously prepared with a mixture of soil + sand (2:1). The experimental design was completely randomized, consisting of two doses of paclobutrazol (1.0 and 2.0 mL L-1) + control and two doses of phenoxaprope-P-ethyl (6.25 and 12.5 µL L-1) + control. Leaf chlorophyll index, digital image analysis and fresh leaf mass were evaluated. It was observed that for Carpet grass Plus®, there was paclobutrazol effect when used as a growth regulator, with the recommended dose of 2 ml L-1 due to its residual effect up to 35 days in reducing fresh mass, without changing the concentration of leaf chlorophyll and green colour. Phenoxaprope-P-ethyl, on the other hand, had an effect as a growth regulator for the studied species, when used in the dose of 6.25 µL L-1.

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Biostimulant in the production of lawn seedlings and plant growth regulators in the development of Carpet grass

Santos,

Tavares,

Prates

et al. 2024

Ornam. Hortic.

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Biostimulants such as seaweed extract can be strong allies in the formation of lawn plugs, as they assist in several physiological processes in the plant. At the same time, shoot mowing is the main factor in the maintenance cost of turfgrasses, and there is a search for alternatives to mechanical management without compromising aesthetic quality, such as the use of plant growth regulators (PGR). Thus, the objective of this experiment was to evaluate the use of Ascophyllum nodosum in the production of lawn seedlings, and growth regulators in the development of Carpet grass. The experiment was carried out between 2020 and 2021, and divided into two parts, the first being the production of seedlings (30 days) of Emerald grass, Bermudagrass DiscoveryTM, Carpet grass and Bahiagrass with the application of seaweed extract, in the second part the development of Carpet grass was evaluated after the application of PGRs (Trinexapac-ethy, Paclobutazol and Glyphosate) in 60 days. The evaluations performed were: green color index (GCI); normalized difference vegetation index (NDVI); root length and dry mass of seedlings. And for the second part: GCI; SPAD; NDVI; visual appearance; coverage rate; shoot height; growth rate and dry mass of clippings. It was observed that the use of the biostimulant increased the production of ornamental lawn plugs, where better values could be observed for Carpet grass. PGRs demonstrated efficient results for controlling the height of Carpet grass in up to 30 days, with emphasis on Trinexapac-ethyl, which reduced growth and maintained the aesthetics of the lawn.

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

Cited by 3 publications

References 20 publications

Paclobutrazol as growth regulator in Bahiagrass

Paclobutrazol as growth regulator in Bahiagrass

Paclobutrazol and phenoxaprope-P-ethyl potential as growth regulator in Carpet grass Plus®

Biostimulant in the production of lawn seedlings and plant growth regulators in the development of Carpet grass

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