TourTurf® GTP Green Turf Paint is a versatile colourant developed specifically for turfgrass to restore and maintain a natural, healthy appearance on discoloured or stressed turf. Depending on the mixing ratio, TourTurf® GTP delivers a natural colour with a slightly bluer tone than traditional green pigments. Applications of 1–3 l/ha help maintain visual quality during periods of heat, drought and high light intensity, while 1–2 l/ha effectively mask symptoms of disease and other stress-related discoloration. Formulated with phthalocyanine pigments, advanced stickers and proprietary dispersing agents, GTP provides excellent leaf coverage, long-lasting colour and good rainfastness. For creeping bentgrass, higher application rates provide the most uniform and natural-looking coverage. The following trials demonstrate the product's colour longevity and performance under practical field conditions.
We wanted to prove our claims through thorough experiments
To provide this material, two new trials were set up in April 2022
A grow room trial to investigate product longevity under intense light and possible protection from high light intensities
A field trial to investigate colour longevity in both wet and dry conditions
A strip of fairway turf was cut into small sections in preparation for treatment, giving at least three replicate turf patches per treatment
The following treatments were sprayed onto the turf surface to mimic real-world application methods:
Turf was placed under grow lights to mimic high light intensities
After 1 hour, a very small amount of paint came off the TourTurf® GTP treated turf and the competitor turf paint treated turf – results were very comparable
The small amount of paint that was removed, is likely to be due to over-spraying, rather than the product failing to dry
This is demonstrated by a second paper towel test slightly later, for which no colour was removed
On day 2 after being placed under grow lights, the turfs were moved closer to the light source to try and induce plant injury
We were unable to show significantly plant injury – with artificial lights
The aim was to test how TourTurf® GTP performed when exposed to heavy rainfall, compared to when applied to dry turf
A section of fairway turf was selected to spray with a range of treatments
The week commencing 04/04/22 brought a lot of wet weather at the trial site!
A small window of dry weather allowed trial plots to be sprayed
Half the trial plots were left exposed to the rain, and half were covered to compare longevity differences
TourTurf® GTP appears to have good rain fastness, with very little colour removed from leaf blades after heavy rain
The product also appears to have dried on the leaf quickly, with very little paint visible after dabbing the surface with a white paper towel
A comparable amount of paint was removed from the surface between TourTurf® GTP and the competitor green turf paint.
From experience with the product, we anticipate the longevity of colour to be up to 3 months when grass is dormant
Longevity will be affected in typical use scenarios, with factors such as cutting shortening the staying power
Typically, we can expect 4 – 8 weeks of colour in real-world conditions
TourTurf® GTP is very comparable in performance – to an industry market leader
Drying time within 1–2 hours, depending on conditions (it will be faster under high light intensity)
TourTurf® GTP appears to hold colour well after heavy rainfall, and is expected to maintain colour for 1 – 3 months depending on growing conditions