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:7/31/2015)... 2015 La 10e Conférence internationale sur ... par le BGI du 22 au 25 octobre ... Chine. La conférence célèbre son 10e ... l,ICG est devenue l,une des réunions annuelles mondiales ... et c,est aussi la plus dynamique, la plus ...
(Date:7/31/2015)... , Jul. 31, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market and ... has filed provisional patent 62/198989 for ELECTRONIC ... highlights a method to advance crypto-currencies such as Bitcoin ... a common, uniform way to manage all payments.  ...
(Date:7/27/2015)... 27, 2015  Synaptics Inc. (NASDAQ: SYNA ... today announced that Huawei has selected the Synaptics ... its stylish smartwatch. Huawei chose the state-of-the-art ClearPad ... power and highly responsive human interface qualities such ... also required a classic round watch face and ...
Breaking Biology News(10 mins):La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 2La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 3NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3
... livelihoods and ecotourism industries can benefit from having a ... reefs, marine researchers say. Despite their small size, ... get more attention, herbivorous fish play a vital role ... the livelihoods of 500 million people worldwide, say researchers ...
... German . The Rubicon was crossed, ... (CFN) and at the Institute of Applied Physics (AP) in ... acoustics ideas, for example inaudibility cloaks, acoustic prisms or new ... So far, pentamodes, proposed in 1995 by ...
... Calif.) Since 2009, a free Web-based marine mapping ... scientists has proved to be an essential tool for ... the next-generation tool is going global. Thanks to ... founder of Esri, the world,s largest geographic information systems ...
Cached Biology News:Weed-eating fish 'help protect jobs, livelihoods' 2Weed-eating fish 'help protect jobs, livelihoods' 3KIT researchers succeed in realizing a new material class 2SeaSketch, the next generation of UCSB's MarineMap program, will aid marine spatial planning 2SeaSketch, the next generation of UCSB's MarineMap program, will aid marine spatial planning 3
(Date:8/27/2015)... /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") today ... 30, 2015. Biorem,s complete second quarter financial statements and MD&A have ... ,000,s except earnings per shareThree-months ended , Six -months endedJune 30 ... 2015 , 2014 Revenue , 4,709 , ... profit , 1,656 , 56 , ...
(Date:8/27/2015)... , August 27, 2015 GlassesOff (OTCBB: ... processing functions in the human vision system, announced today a ... point guard Chris Paul to develop a new ... want to improve their real-life on-court performance. Vision ... whether it is shooting a ball or blocking a pass. ...
(Date:8/27/2015)... ... 2015 , ... METTLER TOLEDO's web-based EasyFinder™ tool ... to a manageable shortlist of bench and floor scales and terminals. Specifying a ... with the customer’s industry and application. , Side-by-side product comparisons and an ...
(Date:8/27/2015)... ... August 27, 2015 , ... ... recently presented new data on the relationship of genetics and hypertension at the ... on Heart Disease in Vancouver, British Columbia, Canada. The event, which boasts an ...
Breaking Biology Technology:BIOREM Reports $718,000 Net Earnings for the Second Quarter 2BIOREM Reports $718,000 Net Earnings for the Second Quarter 3Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 2Eight-Time All-Star Chris Paul and GlassesOff Partner to Develop Innovative Mobile App Designed to Improve On-Court Performance 3METTLER TOLEDO Updates Online Scale Selection Tool 2Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 2Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 3
... I am familiar with bad jobs. , ,My youngest brother ... involved wandering through unfamiliar neighborhoods, worrying about making a daily ... a shared apartment. After a few weeks of this, my ... brother once found a job selling environmentally friendly household products, ...
... the seed capital he needs to fuel his rapidly growing ... are legally allowed to make angel investments. , ,This is ... Wisconsins tech community, Peter M. Skanavis is doing everything he ... angel investments to actually take the plunge and put their ...
... stories coming out of California, but the failure of flight ... one of the weirdest. , ,The radio system used by ... a snit when its regular monthly maintenance wasnt performed and ... but couldnt talk to them, even as the planes converged ...
Cached Biology Technology:Beware the cold-call job interview 2Beware the cold-call job interview 3Beware the cold-call job interview 4Beware the cold-call job interview 5Investor profile: Peter M. Skanavis, tech angel, sees investing as civic duty 2Investor profile: Peter M. Skanavis, tech angel, sees investing as civic duty 3Investor profile: Peter M. Skanavis, tech angel, sees investing as civic duty 4Proactive nightmares 2
... Satellite Thermal Cycler (MBS) is ... for medium to high throughput ... the latest in satellite block ... PC control, resulting in a ...
45° Fixed Angle Rotor for use in the IEC Centra CL2, Centra CL3/CL3R, HN-SII, and the Centra-MP4/MP4R....
Glycerokinase; from Bacillus stearothermophilus...
...
Biology Products: