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
Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University
New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
17.01.2017 | Earth Sciences
17.01.2017 | Materials Sciences
17.01.2017 | Architecture and Construction