Response of Kentucky Bluegrass Turfgrass to Plant Growth Regulators

Plant growth regulators (PGRs) are widely used in turfgrass management. This study aimed to find the influence of different rates of PGRs on Kentucky bluegrass visual quality. Six PGRs were applied, Trinexapac Ethyl, Paclobutrazol, Flurprimidol, Mefluidide, Ethephon, and Gibberellic Acid. The measur...

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Bibliographic Details
Published in:Agronomy (Basel) 2023-03, Vol.13 (3), p.799
Main Authors: Głąb, Tomasz, Szewczyk, Wojciech, Gondek, Krzysztof
Format: Article
Language:English
Subjects:
Acids
Aesthetics
Agricultural chemicals
Color
Cultivars
Gibberellic acid
Gibberellins
Grasses
Growth
Growth regulators
Kentucky bluegrass
Landscaping industry
Leaves
Personal appearance
Plant growth
plant growth regulator
Poa pratensis
Sports facilities
Sprinkler systems
turfgrass quality
Turfgrasses
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Summary:Plant growth regulators (PGRs) are widely used in turfgrass management. This study aimed to find the influence of different rates of PGRs on Kentucky bluegrass visual quality. Six PGRs were applied, Trinexapac Ethyl, Paclobutrazol, Flurprimidol, Mefluidide, Ethephon, and Gibberellic Acid. The measurement of the leaf color was performed using a spectrophotometer. The turfgrass visual quality was judged using a visual rating system. Trinexapac Ethyl and Flurprimidol applications improved the overall appearance of turfgrass. Paclobutrazol and Gibberellic Acid decreased the overall appearance of investigated Kentucky bluegrass cultivars. The leaf texture assessment was only improved by Gibberellic Acid. The color assessment was enhanced with Paclobutrazol but deteriorated with Gibberellic Acid. PGRs affected the wavelength in a range of 520 to 630 nm. Gibberellic Acid caused lighter leaves with higher green and yellow hues. Paclobutrazol caused darker leaves with a lower green and a reddish hue. Trinexapac Ethyl application resulted in a more reddish hue. PGR rates also affected the visual quality of Kentucky bluegrass turfgrass.
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy13030799