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English
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Authors : T.S. Aamlid and O. Niemelainen
Journal / Proceedings: 2nd ETS Confenrence Proceedings
Bibliographic record:
2010 Angers full Papers
Evaluation of the plant growth regulator trinexapac-ethyl (Primo MAXX®) for use on Scandinavian golf courses
Applied to turf, the plant growth regulator trinexapac-ethyl (TE; PrimoMAXX®,
Syngenta) offers prospects for reduced leaf elongation, enhanced tillering, darker green colour,and better resistance to drought and shade (Erwin and Zhang, 2008). These physiological changes may not only improve the aesthetic and functional quality of golf course playing surfaces, but
they have also been shown reduce CO2 emissions by 39-58% and maintenance costs by 4-21%
(Bartlett and James, 2009).
In Scandinavia, i.e. at latitudes ranging from 55 to 71 ºN, turfgrasses are exposed to
longer photoperiods with lower light intensities and lower red to farred (R/FR) ratios than in
countries further south. The turf responds to these light conditions by allocating more resources
to leaf elongation and less to tillering and carbohydrate storage. As these responses are partly
mediated by gibberellic acid (GA) (Heide, 1985), the application of TE, an inhibitor of the
conversion from inactive GA20 to bioactive GA1, may well be particularly advantageous at high
latitudes. Thus, our objective was to study turfgrass responses to TE on golf course greens and
fairways in Scandinavia.
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