Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Photoselective film proves effective for controlling height in potted gardenia plants

05.05.2009
Nonchemical alternative reduces production costs and pollution

To grow the high-quality potted plants preferred by consumers, many growers use chemical "regulators" designed to affect plant growth and development.

The use of chemical growth retardants is standard practice in the production of compact gardenia plants; the chemicals are used to reduce plants' internode length, and encourage the production of lateral shoots that create aesthetically pleasing, spherical plants with plentiful flower buds.

Chemical sprays are effective at reducing gardenia plant height, but need to be applied regularly—a practice that increases the cost of production and contributes to environmental pollution.

Dr. Constantinos Kittas and his colleagues from the University of Thessaly School of Agricultural Sciences and the Agricultural University of Athens (Greece) published a study in HortScience in which they report on experiments with the use of a photoselective polyethylene greenhouse covering film±a less expensive and more environmentally friendly alternative to chemical treatment—for production of compact potted gardenia (Gardenia jasminoides Ellis) plants.

Two types of experiments were performed on gardenia cuttings rooted in rooting benches and on young potted plants grown under low tunnels. In both experiments, two types of cover materials were used: a photoselective polyethylene (P-PE), filtering light within the wavelength range 600 to 750 nm and a common polyethylene film (C-PE) routinely used in greenhouse practice. The experiments were carried out in a commercial plastic-covered greenhouse located on the coastal area of eastern Greece.

The researchers recorded photosynthetically active radiation, cover materials' spectral properties, air temperature, and relative humidity inside the rooting benches and under the low tunnels. Plant growth indicators (including main shoot length and leaf area and lateral shoot number, leaf area, and fresh and dry weight) were determined along the growth cycle.

According to Kittas, "The research revealed that photoselective plastic films with high values and high B:R ratios are able to reduce the height of gardenia plants. However, continued development of gardenia plants under a P-PE film results in unmarketable, low-quality plants without lateral shoots and a resulting low number of flowers."

Although the study determined that the use of photoselective plastic films for the production of potted compact gardenia plants can contribute to the reduction of chemical use, Kittas added that more information about the effect of light quality and quantity as well as the necessary period of treatment on gardenia cuttings and transplanted plants is needed before this technology is used in commercial greenhouses for compact potted gardenia plant production.

The complete study and abstract are available on the ASHS HortScience electronic journal web site: http://hortsci.ashspublications.org/cgi/content/abstract/43/7/2027

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.

Michael W. Neff | EurekAlert!
Further information:
http://www.ashs.org

More articles from Agricultural and Forestry Science:

nachricht New study shows producers where and how to grow cellulosic biofuel crops
17.01.2018 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

nachricht Robotic weeders: to a farm near you?
10.01.2018 | American Society of Agronomy

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Artificial agent designs quantum experiments

On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.

We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Let the good tubes roll

19.01.2018 | Materials Sciences

How cancer metastasis happens: Researchers reveal a key mechanism

19.01.2018 | Health and Medicine

Meteoritic stardust unlocks timing of supernova dust formation

19.01.2018 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>