Navigation Links
Athletic field paint steals spotlight from the grass it covers
Date:8/27/2012

Aug. 27, 2012 Professional athletic field managers maintain trimmed turfgrass with great precision, carefully painting crisp lines and colorful logos on their grass before each game. While these fields appear to be in perfect health, some field managers have noted deteriorating turfgrass beneath repeated paint applications.

New research now suggests why. In a study that appears in the September-October issue of Crop Science, three North Carolina State University researchers found that grasses coated with latex paints show a notable reduction in photosynthesis.

In their study, which was funded by the Center for Turfgrass Research and Environmental Education at NC State University, the researchers prepared 60 pots with sand and peat substrate before seeding each with perennial ryegrass, a grass commonly used on professional football and baseball fields including most NFL and MLB fields. After the grass matured, two different dilutions (no-dilution, and 1:1 dilution with water) of red and white latex paints were applied to the turf samples weekly for six weeks.

To recognize how paint affects turfgrass health, it's important to first understand how paint itself functions. Latex paints consist of four different components: resins, solvents, additives, and pigments. Each has a unique role in the painting process.

Resins act like an adhesive, allowing paint to stick to surfaces. Solvents dilute the paint and help ensure a consistent application thickness. Additives help distribute the pigments, the fourth component, into the liquid paint. Of these ingredients, the scientists say pigments pose the biggest threat to turfgrass.

Pigments are used in paint to ensure a surface is completely coated, and give paint its color by absorbing specific wavelengths of light while reflecting others. This wavelength-selective absorption allows for the wide variety of paint colors that exist today.

However, the NC State researchers suspected the coating of pigment on turfgrass was also damaging the grass by shielding it from the sun and reducing photosynthetically active radiation (PAR). PAR consists of wavelengths of light in the 400 to 700 nm range that plants use in photosynthesis.

The researchers looked at the reflection, transmission, and absorption of PAR in the four different paints, determining that red paint absorbs the highest amounts of PAR. By observing the carbon exchange rates in the painted turfgrass samples, the team also found red paint was more damaging to total canopy photosynthesis (TCP) than white paint, although diluting each color with water reduces their negative effects.

Results from this study further suggest that white paint reflects more PAR in the turfgrass canopy, allowing it to be absorbed by plants for photosynthesis. Over the course of the six-week study, diluted white paint reduced TCP by only 19%. However, the absorption of PAR by red paint eliminates the benefits of PAR reflection by the white and reduces TCP more drastically, the effects worsening as paint applications increase. The no-dilution red paint produced a 75% reduction in TCP by the final application.

The results from this study confirmed pigment's crucial role in the availability of PAR for plant use underneath latex paint. But more research is needed to fully explore the impacts different types of athletic field paint have on turfgrass photosynthesis and growth, say the scientists.

In a global sports market where field paint application plays a crucial role in the industry, understanding the delicate relationship between latex paints and grass will not only help improve turfgrass health but may also change the properties of paint products themselves.


'/>"/>

Contact: Madeline Fisher
mfisher@sciencesocieties.org
608-268-3973
American Society of Agronomy
Source:Eurekalert

Related biology news :

1. Athletic frogs have faster-changing genomes
2. Tale of 2 scientific fields -- ecology and phylogenetics -- offers new views of Earths biodiversity
3. Navigating the Patent Minefield of Embryonic Stem Cell Product Development; Free Kindle Fire Tablet and Research Database with Purchase
4. Navigating the IP Minefield of Human Embryonic Stem Cell Development
5. Computer scientists develop an interactive field guide app for birders
6. Scientists advance field of research with publication of newly validated method for analyzing flavanols in cocoa
7. Slug ecology and management in no-till field crops
8. Fielding questions about climate change
9. The laser beam as a 3-D painter
10. Paints and coatings containing bactericidal agent nanoparticles combat marine fouling
11. Rice researchers develop paintable battery
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/31/2016)... , March 31, 2016   ... ("LegacyXChange" or the "Company") LegacyXChange is excited ... of its soon to be launched online site for ... https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide potential shareholders a ... DNA technology to an industry that is notorious for ...
(Date:3/29/2016)... 29, 2016 LegacyXChange, Inc. (OTC: ... and SelectaDNA/CSI Protect are pleased to announce our successful ... a variety of writing instruments, ensuring athletes signatures against ... collectibles from athletes on LegacyXChange will be assured of ... DNA. Bill Bollander , CEO states, ...
(Date:3/22/2016)... PUNE, India , March 22, 2016 ... new market research report "Electronic Sensors Market for ... Fingerprint, Proximity, & Others), Application (Communication & ... and Geography - Global Forecast to 2022", ... consumer industry is expected to reach USD ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
(Date:6/23/2016)... ... 2016 , ... Charm Sciences, Inc. is pleased to announce ... Research Institute approval 061601. , “This is another AOAC-RI approval of the Peel ... President of Regulatory and Industrial Affairs. “The Peel Plate methods perform comparably to ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the Industry Network for ... Design Lab . Located in Pasadena, Calif., the Design Lab’s mission is to ... are designed, built and brought to market. , The Design Lab is Supplyframe’s ...
(Date:6/23/2016)... , June 23, 2016  Blueprint Bio, a company ... to the medical community, has closed its Series A ... Nunez . "We have received a commitment ... capital we need to meet our current goals," stated ... us the runway to complete validation on the current ...
Breaking Biology Technology: