Researchers Bradley Park, T.J. Lawson, Hiranthi Samaranayake, and James A. Murphy, from Rutgers University Center for Turfgrass Science, reported their findings in the July/August 2010 edition of Crop Science, published by the Crop Science Society of America.
The researchers attributed the better spring performance of Kentucky bluegrass to greater shoot biomass production during spring, an annual growth cycle phenomenon of cool-season turfgrass.
Twenty-two Kentucky bluegrass varieties were tested using a paddling device developed at Rutgers University during six week periods in spring, summer, and fall.
A variety called ‘Julia’ had the greatest wear tolerance and recovery throughout the study and has previously exhibited a high level of performance in traffic stress trials at Rutgers and other universities. Unfortunately, its susceptibility to various turfgrass diseases caused by fungal pathogens limit its use on sports fields.
Several varieties frequently used in blends established for sod production, classified as Compact-Midnight Types, including ‘Midnight’, ‘Midnight II’, and ‘Liberator’, were tested. While these exhibited good wear tolerance during fall, their recovery in the following spring was slow. Slow spring recovery of these cultivars is due to long winter dormancy and late spring green-up.
‘Cabernet’, ‘Lakeshore’, ‘Moon Shadow’, ‘Limousine’, and ‘Jefferson’ varieties exhibited better recovery from fall wear during the next spring. Better winter performance and early spring green-up likely aided in the spring recovery of these cultivars after wear during the previous fall. These cultivars would be useful on sports fields needing recovery from fall use and should probably be included in blends with Compact-Midnight Type cultivars.
The ‘Langara’, ‘Bedazzled’, and ‘Touchdown’ varieties had poor wear tolerance and recovery during all seasons. The researchers concluded that these cultivars are better suited to sports fields that see low use intensities.
The research team at Rutgers University continues to investigate the effects of seasonal wear on Kentucky bluegrass. Results provide sod growers, sports field managers, and other turf professionals valuable information to aid in cultivar selection for use on sports and recreational surfaces. For example, the authors concluded that screening varieties for tolerance to wear should be done in the spring.
The full article is available for no charge for 30 days following the date of this summary. View the abstract at https://www.agronomy.org/publications/cs/abstracts/50/4/1526.
Crop Science is the flagship journal of the Crop Science Society of America. Original research is peer-reviewed and published in this highly cited journal. It also contains invited review and interpretation articles and perspectives that offer insight and commentary on recent advances in crop science. For more information, visit www.crops.org/publications/cs
The Crop Science Society of America (CSSA), founded in 1955, is an international scientific society comprised of 6,000+ members with its headquarters in Madison, WI. Members advance the discipline of crop science by acquiring and disseminating information about crop breeding and genetics; crop physiology; crop ecology, management, and quality; seed physiology, production, and technology; turfgrass science; forage and grazinglands; genomics, molecular genetics, and biotechnology; and biomedical and enhanced plants.
CSSA fosters the transfer of knowledge through an array of programs and services, including publications, meetings, career services, and science policy initiatives. For more information, visit www.crops.org
Filling intercropping info gap
16.11.2017 | American Society of Agronomy
Climate change, population growth may lead to open ocean aquaculture
05.10.2017 | Oregon State University
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses