Perennial ryegrass reestablished in 6 weeks after diesel, hydraulic fluid spills
Petroleum-based spills on turfgrass can occur during lawn care and maintenance, primarily as a result of equipment failure or improper refueling. When these spills happen, hazardous hydrocarbons can contaminate soil and compromise the chemical balance of the grass and soil.
The authors of a study in the June 2016 issue of HortTechnology found that application of mulching materials after soil remediation and reseeding was effective in reestablishing perennial ryegrass in 6 weeks after diesel and hydraulic fluid spills.
"Damage caused by hydrocarbons to turfgrass can be long lasting and difficult to correct due to slow degradation of most hydrocarbons by microbes in soils," explained Longyi Yuan, Yang Gao, and Deying Li, authors of the research report.
They said that the most effective methods currently used to reclaim soils after petroleum-based spills involve leaching contaminants with detergent water and applying absorbents such as a humic substance and activated charcoal. The scientists investigated how mulching and reseeding could be effective in speeding the reestablishment of turfgrass after petroleum-based spills.
In a 2-year study in field plots established with 'Kenblue' Kentucky bluegrass, the researchers applied diesel and hydraulic fluids at a rate of 15 L·m-2. They then applied two liquid humic amendments and an activated flowable charcoal, with tap water/dishwashing detergent used as a control.
Nitrate nitrogen was added to each remediation treatment to facilitate remediation. Next, the spilled areas were seeded with perennial ryegrass and then three mulching treatments (biochar, peat pellets, and paper pellets) were applied at a thickness of 0.375 inch.
Analyses showed that all remediation methods resulted in better green density of newly seeded perennial ryegrass than the untreated control. "The combination of peat pellets, mulching, and remediation with humic amendment 1 resulted in the best turfgrass green density in the reestablished perennial ryegrass," the authors said.
While previous remediation experiments using organic amendments alone found that turfgrass reestablishment took more than 4 months, the combination of remediation and mulching treatments in this study allowed for reestablishment of perennial ryegrass in just 6 weeks.
"This study tested perennial ryegrass only," the authors noted. "However, in a region where cool-season grasses predominate, overseeding with perennial ryegrass immediately after petroleum-based spills to create a grass cover is a practical option. Reseeding with a cool-season grass species conforming to the original lawn in a later stage can then be done if needed."
The complete study and abstract are available on the ASHS HortTechnology electronic journal web site: http://horttech.
Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education, and application. More information at ashs.org
Michael W. Neff | EurekAlert!
Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli
26.04.2017 | University of the Basque Country
New data unearths pesticide peril in beehives
21.04.2017 | Cornell University
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
28.04.2017 | Event News
20.04.2017 | Event News
18.04.2017 | Event News
28.04.2017 | Life Sciences
28.04.2017 | Life Sciences
28.04.2017 | Life Sciences