Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

String blossom thinner proves effective across stages of bloom development

04.03.2011
Research provides good news for stone fruit growers

Blossom or fruitlet thinning is a labor-intensive part of commercial peach and nectarine production. The use of mechanical string blossom thinners has been shown to reduce labor requirements and improve fruit size in peach crops, but stone fruit producers have needed more information about the range of thinning times.

New research from Tara Auxt Baugher and colleagues from The Pennsylvania State University and Penn State Cooperative Extension gives producers sought-after data about optimum thinning times.

Baugher said that, prior to this study on bloom stage, peach producers interested in the cost-effectiveness of string blossom thinning had unanswered questions about the range of thinning timings. "Some were concerned about spring freezes and wanted to thin as late as possible, and some wanted to obtain as many hours of use from the mechanical thinner as possible. Based on this study, we have determined that the thinning timeframe is from pink to petal fall, which is good news for both commercial situations."

The research, conducted over 2 years on 'Sugar Giant' peach and 'Arctic Sweet' nectarine, was designed to assess the effects of mechanical thinning at various bloom stages compared with conventional green fruit hand-thinning on blossom removal and follow-up hand-thinning requirement, and on crop load, fruit size, and net economic impact. Results showed that blossom removal with the string thinner was significant across years, cultivars, and canopy regions for bloom stages in which there were open flowers.

The best treatments reduced follow-up hand-thinning time compared with green fruit hand-thinning alone by 51% and 41% for 'Sugar Giant' and by 42% and 22% for 'Arctic Sweet' in years one and two, respectively. The savings in hand-thinning time and increases in fruit size associated with the bloom stage treatments increased the value of the peach and nectarine crops, resulting in a net positive impact of $123/ha to 1368/ha compared with hand-thinning alone.

"This study demonstrated that it is more difficult to remove blossoms at pink compared with other bloom stages, which indicates that producers will need to thin more aggressively at earlier bloom stages; e.g., by increasing spindle rpm.", Baugher said. "A benefit of using the string thinner at earlier stages of bloom development is that there can be an increased effect on fruit size and market value."

The complete study and abstract are available on the ASHS HortScience electronic journal web site: http://hortsci.ashspublications.org/cgi/content/abstract/45/9/1327

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!
Further information:
http://www.ashs.org

More articles from Agricultural and Forestry Science:

nachricht New technique reveals details of forest fire recovery
17.05.2018 | DOE/Brookhaven National Laboratory

nachricht Mixed forests: ecologically and economically superior
09.05.2018 | Technische Universität München

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: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

Im Focus: Computer-Designed Customized Regenerative Heart Valves

Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.

Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...

Im Focus: Light-induced superconductivity under high pressure

A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.

Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

Supersonic waves may help electronics beat the heat

18.05.2018 | Power and Electrical Engineering

Keeping a Close Eye on Ice Loss

18.05.2018 | Information Technology

CrowdWater: An App for Flood Research

18.05.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>