Navigation Links
New research contains solutions to common pear disease
Date:12/28/2010

CORVALLIS, OR Diseases caused by a species of fungus called Phytophthora syringae are responsible for significant economic losses on a wide range of plants, including pear. In the Pacific Northwest region of the United States, disease occurs during the winter in nursery stock, especially on trees that are harvested and stored in coolers or in outdoor sawdust beds. Recent field observations by growers suggest that increased nitrogen content in nursery trees resulting from foliar sprays with urea in the autumn increases tree susceptibility to infection by Phytophthora syringae. The results of new research suggest the relationship between tree susceptibility to P. syringae and tree nitrogen concentration may be specific to the form of nitrogen, delivery method, or timing of nitrogen applications.

Researchers from Oregon State University's Department of Horticulture and the USDA-Agricultural Research Service published a study in HortTechnology that contains new answers for nursery operators. The experiments investigated the effects of soil nitrogen (N) availability and spraying pear trees with combinations of urea, chelated copper ethylenediaminetetraacetic acid (CuEDTA), and phosphonate-containing fungicides on stem N concentration and susceptibility to infection by P. syringae.

Experimental results showed that spraying trees with urea in the autumn increased concentrations of nitrogen and amino acids in stems and had no significant effect on tree susceptibility when stems were inoculated with P. syringae before or after urea sprays. Spraying with CuEDTA decreased stem nitrogen concentrations and had no significant influence on tree susceptibility to P. syringae when stems were inoculated before or after CuEDTA sprays, while spraying with fungicides containing fosetyl-aluminum in October or November decreased tree susceptibility to P. syringae. The effects of fungicides containing fosetyl-a
'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. Standardized protocols would greatly enhance clinical and research potential of BTMs
2. UK researchers contribute to sequencing strawberry genome
3. Scripps Research scientist uncovers switch controlling protein production
4. An important breakthrough by IRCM researchers in hematopoiesis and the development of B cells
5. Carnegie Mellon researchers discover mechanism for signaling receptor recycling
6. Research shows positive results with high pressure technology for certain dairy products
7. Researchers discover genetic predisposition for breast, kidney cancers
8. Polar bears no longer on thin ice: researchers say polar bears could face brighter future
9. ONR-funded researchers among Popular Science magazines Brilliant 10
10. BUSM researchers uncover cellular mechanism responsible for chronic inflammation, Type 2 diabetes
11. Research shows that environmental factors limit species diversity
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... 2014  The second annual Biometrics UnPlugged Executive ... Tampa, Florida on September 15, 2014, ... Technology and Strategy at Samsung, and Philippe de ... of this year,s event is Mobility at the ... "Biometrics UnPlugged: Mobility at the Crossroads of Commerce ...
(Date:8/19/2014)... . Wind ... large amount of electricity is to be produced with renewable ... be stored during productive periods so that these fluctuations can ... adequate for the purpose. Science and industry are therefore working ... systems that used to be too expensive or unsophisticated to ...
(Date:8/19/2014)... purchased at retail seafood counters in 10 different ... expose consumers to unexpectedly high levels of mercury, ... present a fish of the same species, but ... mislabeling offense, according to new research by University ... of seafood is essential to allow consumers to ...
Breaking Biology News(10 mins):Biometrics UnPlugged: Mobility at the Crossroads of Commerce & Privacy to Feature Interactive Sessions with Samsung and Experian 2Asian inventions dominate energy storage systems 2Asian inventions dominate energy storage systems 3Seafood substitutions can expose consumers to unexpectedly high mercury 2Seafood substitutions can expose consumers to unexpectedly high mercury 3
... Infection control experts at The Johns Hopkins Hospital have ... a bleaching agent into the air and then detoxify ... preventing the spread of multiple-drug-resistant bacteria, or so-called hospital ... hydrogen peroxide vaporizers -- first deployed in several Singapore ...
... West China, Myanmar and Northern Vietnam contain one of the ... area are thousands of caves and gorges. It is only ... plants. This exploration is yielding many new species new to ... study was published in the open access journal ...
... Geosphere articles include additions to several special issues ... Change Offshore New Jersey"; "The ANDRILL McMurdo Ice Shelf (MIS) ... Sea and Beyond: Contributions to Marine Geology in Honor of ... the Colorado River System II." Topics include, 1. ...
Cached Biology News:Hydrogen peroxide vapor enhances hospital disinfection of superbugs 2Hydrogen peroxide vapor enhances hospital disinfection of superbugs 3Hydrogen peroxide vapor enhances hospital disinfection of superbugs 4Cave dwelling nettle discovered in China 2Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 2Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 3Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 4Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 5Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 6Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 7Geosphere covers Grand Canyon, deep drill coring, Death Valley, and more 8
(Date:8/21/2014)... August 21, 2014 SoundConnect ... been recognized as one of the nation’s Fastest ... magazine for the 2nd consecutive year. Inc. magazine ... annual Inc. 500|5000, an exclusive ranking of the ... most comprehensive look at the most important segment ...
(Date:8/20/2014)... inventions licensed to biotechnology firms has revealed early ... these roadblocks, the researchers suggest that better communication ... could lead to faster commercialization down the road. ... made in university laboratories and licensed to biotechnology ... which have a high failure rate. But a ...
(Date:8/20/2014)... , Aug. 20, 2014 Neurotrope, ... host a conference call to provide an update ... p.m. Eastern daylight timeDial-in numbers:(888) 505-4369 (U.S. and ... Live web cast: www.neurotropebioscience.com , under "Investor Relations"The ... after completion through September 2, 2014 at (888) ...
(Date:8/20/2014)... , Aug. 20, 2014  PAREXEL International Corporation (NASDAQ: ... be presenting at the Baird Healthcare Conference in New ... Chief Financial Officer, will be making a presentation on ... on Wednesday, Sept. 3, 2014. A live ... "Investors" section of PAREXEL,s website at www.PAREXEL.com ...
Breaking Biology Technology:SoundConnect Returns on Inc. 5000 List of Fastest Growing Companies 2SoundConnect Returns on Inc. 5000 List of Fastest Growing Companies 3Early bottlenecks in developing biopharmaceutical products delay commercialization 2Early bottlenecks in developing biopharmaceutical products delay commercialization 3Neurotrope To Host Conference Call 2PAREXEL International To Present At Baird Healthcare Conference 2
... work 25 hours a day. So several speakers at the ... drive home the point that "work smarter, not harder" is ... of the University of Wisconsin-Madison School of Business, summed it ... Knetter said. To him, producing more by working more hours ...
... the possibility - make that probability - of data breaches are ... the CEO's top technologist doesn't mind consulting with the legal team, ... the message of attorney Erik Phelps, a partner in the law ... 2007 gathering that since e-mail is now discoverable in court, and ...
... sort - from the globally familiar to the local ... and venerated with a speed never seen before. The ... for brand commentary, both positive and negative, and these ... political brand managers. They now must proactively protect brand ...
Cached Biology Technology:Fusion 2007: Innovation drives productivity in post 24x7 world 2Fusion 2007: In e-legalities, CIOs and lawyers combine to provide business value 2Fusion 2007: In e-legalities, CIOs and lawyers combine to provide business value 3Brand protection in the age of customer engagement 2Brand protection in the age of customer engagement 3Brand protection in the age of customer engagement 4Brand protection in the age of customer engagement 5Brand protection in the age of customer engagement 6
Assay Diluent, 10 L...
Assay Diluent Trial Pack, 4 x 100 mL...
HRP Monoclonal-Goat Diluent - 5X Concentrate, 25 mL...
SpectroQuest single beam 1.8nm UV/Vis spectrophotometer; stand-alone unit...
Biology Products: