Hello Colleagues,
The Dec. 31 deadline for submission of abstracts for presentations at the
Congress is approaching. If you would like to present (either oral or
poster) at the Congress, you should submit an abstract by visiting
http://www.iufro2010.com
then click on ?online abstract submission on the right?. You will be
prompted to establish a login ID and password prior to submitting an
abstract.
If you would like to submit an abstract for one of the sessions in our
Congress Theme ?Frontiers in forest and tree health? listed below, we
suggest that you contact the listed session coordinator to make sure that
there is still room in the session, before submitting an abstract with
that session designated.
It is also possible to submit an abstract without designating any of the
existing sessions. To do this, you should still select ?Frontiers in
Forest Health? as the Congress theme but select ?other? as the session.
The Congress Organizing Committee will organize these ?other?
presentations into sessions with similar content.
Finally, plans are being made for a special 2-day post-conference forest
health tour. As part of the tour, we would visit various forest stands
for first-hand view of some of the important insect and disease problems
in Korea. For more information, see
http://www.iufro2010.com/?code=iu06&subp=0201
-Sandy
Theme: ?Frontiers in Forest and Tree Health? (full descriptions can be
found at http://www.iufro2010.com/upload/Congress_Themes_And_Sessions.pdf)
G-01 Forest health in a changing environment
coordinators: Elena Paoletti (e.paoletti(a)ipp.cnr.it) & Mike Wingfield
G-02 New insights into roles of ophiostomatoid fungi in bark
beetle-fungus symbioses
coordinators: Diana Six (diana.six(a)cfc.umt.edu) & Mike Wingfield
G-03 Effect of multiple ecosystem stressors on tree and forest
ecosystem health
coordinator: Nancy Grulke (ngrulke(a)fs.fed.us)
G-04 The growing threat of Australian insect pests to world
eucalyptus plantation forestry coordinator: Simon Lawson
(simon.lawson(a)dpi.qld.gov.au)
G-05 Synergy in forest threats: symbiotic interactions and
invasives
coordinator: Kier Klepzig (Kklepzig(a)fs.fed.us)
G-06 Alien invasive pathogens: threats to forest ecosystem
integrity and services
coordinators: Steve Woodward & Ned Klopfenstein (nklopfenstein(a)fs.fed.us )
G-07 Impacts of interacting disturbances on forest health in the
boreal zone
coordinator: Douglas McRae (DMcRae(a)NRCan.gc.ca )
G-08 Invasive alien species: economic and environmental impacts on
forest ecosystems
coordinator: David Langor (David.Langor(a)NRCan-RNCan.gc.ca )
G-09 Semiochemical based monitoring of forest health
coordinator: Zhang Zhen (zhangzhen(a)caf.ac.cn)
G-10 Trends in wood and bark borer invasions and effects of policy
coordinators: Eckehard Brockerhoff
(Eckehard.Brockerhoff(a)scionresearch.com) & Robert Haack
G-11 Molecular ecological and evolutionary perspectives on changing
populations of forest insects and their symbionts
Session coordinator: Bernard Slippers (bernard.slippers(a)fabi.up.ac.za)
G-12 Oak decline in the world
Session coordinator: Naoto Kamata (kamatan(a)uf.a.u-tokyo.ac.jp) & Kazuyoshi
Futai
G-13 Advances in exotic forest pest surveillance and monitoring
Session coordinator: Jon Sweeney (jsweeney(a)nrcan.gc.ca)
G-14 Ecology and management of pine wood nematode in the face of
climate change
Session coordinators: Yeong-jin (yjchung(a)foa.go.kr) Chung & Han Hyerim
G-15 Cork Oak forest degradation causes and sustainable development
in western Mediterranean countries
Session coordinators: Mohammed Nejib Rejeb (Rejeb.nejib(a)iresa.agrinet.tn)
Abdelhamid Khaldi & Woo Su-Young
G-16 Climate factors and tree susceptibility/resistance to insects
and pathogens
Session coordinators: François Lieutier
(francois.lieutier(a)univ-orleans.fr) & Dan Herms
G-17 Managing cone and seed insects to preserve the regeneration of
future forests
Session coordinator: Jean-Noël Candau (Jean-Noel.Candau(a)NRCan-RNCan.gc.ca
)
G-18 Diseases and insects in pines threatening global forest health
in the 21st century
Session coordinators: Lee Kyung Joon (fraxinus(a)snu.ac.kr ) & Kang Ho Duck
G-19 Forest dieback caused by novel ambrosia beetle/Raffaelea pest
complexes
Session coordinators: Kazuyoshi Futai (futai(a)kais.kyoto-u.ac.jp ) & Naoto
Kamata
-------------------------------------------------------------------------
Andrew Liebhold 304-285-1512
Northern Research Station 304-285-1505 FAX
USDA Forest Service 724-317-8668 mobile
180 Canfield St. aliebhold(a)fs.fed.us
Morgantown, WV26505 USA http://sandyliebhold.com
-------------------------------------------------------------------------------
Please forward this on to any interested parties:
Now available....
Kliejunas, John T.; Geils, Brian W.; Glaeser, Jessie Micales; Goheen,
Ellen Michaels; Hennon, Paul; Kim, Mee-Sook; Kope, Harry; Stone, Jeff;
Sturrock, Rona; Frankel, Susan J. 2009. Review of literature on climate
change and forest diseases of western North America. Gen. Tech. Rep.
PSW-GTR-225. Albany, CA: U.S. Department of Agriculture, Forest Service,
Pacific Southwest Research Station. 54 p.
Online at: http://www.fs.fed.us/psw/publications/documents/psw_gtr225/
Hardcopy. There is NO charge for this publication and to order a free
copy:
Email: rschneider(a)fs.fed.us (include your full mailing address and the
publication name or number)
FAX: (970) 498-1122
Phone: (970) 498-1392
By US Mail: Send your name and address in block format (as if you are
addressing an envelope) to:
Publishing Services
Rocky Mountain Research Station
240 West Prospect Road
Fort Collins, CO 80526-2098 USA
ALSO... we have updated the Annotated Bibliography of Climate and Forest
Diseases of Western North America
http://www.fs.fed.us/psw/topics/climate_change/forest_disease/fdbib/
to add the following publications:
Allen, C.D. 2009. Climate-induced forest dieback: An escalating global
phenomenon?. Unasylva. 231/232 60(1-2): 43-49.
Allen, Craig D.; Breshears, David D. 1998. Drought-induced shift of a
forest?woodland ecotone: rapid landscape response to climate variation.
Proc. Natl. Acad. Sci. USA Vol. 95(25): 14839-14842.
Beier, Colin M.; Sink, Scot E.; Hennon, Paul E.; D'amore, David V.; Juday,
Glenn P. 2008. Twentieth-century warming and the dendroclimatology of
declining yellow-cedar forests in southeastern Alaska. Can. J. For. Res.
38(6): 1319-1334.
Blennow, Kristina; Andersson, Mikael; Sallnäs, Ola; Olofsson, Erika 2009.
Climate change and the probability of wind damage in two Swedish forests.
Forest Ecol. Manage. (2009), doi:10.1016/j.foreco.2009.07.004.
Brenes-Arguedas, Tania; Coley, Phyllis D.; Kursar, Thomas A. 2009. Pests
vs. drought as determinants of plant distribution along a tropical
rainfall gradient. Ecology. 90(7): 1751-1761.
Adams, Henry D.; Guardiola-Claramonte, Maite; Barron-Gafford, Greg A.;
Camilo Villegas, Juan; Breshears, David D.; Zou, Chris B.; Troch, Peter
A.; Huxman, Travis E. 2009. Temperature sensitivity of drought-induced
tree mortality portends increased regional die-off under
global-change-type drought. Proceedings of the National Academy of
Sciences. 106(17): 7063-7066.
Breshears, David D.; Myers, Orrin B.; Meyer, Clifton W.; Barnes, Fairley
J.; Zou, Chris B.; Allen, Craig D.; McDowell, Nathan G.; Pockman, William
T. 2009. Tree die-off in response to global change-type drought: mortality
insights from a decade of plant water potential measurements. Frontiers in
Ecology and the Environment. 7(4): 185-189.
Brodribb, Tim J.; Cochard, Hervé 2009. Hydraulic failure defines the
recovery and point of death in water-stressed conifers. Plant Physiology
149(1): 575-584.
Dukes, Jeffrey S.; Pontius, Jennifer; Orwig, David; Garnas, Jeffrey R.;
Rodgers, Vikki L.; Brazee, Nicholas; Cooke, Barry; Theoharides, Kathleen
A.; Stange, Erik E.; Harrington, Robin; Ehrenfeld, Joan; Gurevitch,
Jessica; Lerdau, Manuel; Stinson, Kristina; Wick, Robert; Ayres, Matthew
2009. Responses of insect pests, pathogens, and invasive plant species to
climate change in the forests of northeastern North America: What can we
predict? . Canadian Journal of Forest Research, Volume 39( 2): 231-248.
Gregory, Peter J.; Johnson, Scott N.; Newton, Adrian C.; Ingram, John S.
I. 2009. Integrating pests and pathogens into the climate change/food
security debate. Journal of Experimental Botany. 60 (10): p. 2827-2838.
Harsch, Melanie A.; Hulme, Philip E.; McGlone, Matt S.; Duncan, Richard P.
2009. Are treelines advancing? A global meta-analysis of treeline response
to climate warming. Ecology Letters. 12(10): 1040-1049.
Klopfenstein, Ned B.; Kim, Mee-Sook; Hanna, John W.; Richardson, Bryce A.;
Lundquist, John E. 2009. Approaches to predicting potential impacts of
climate change on forest disease: an example with Armillaria root disease.
Res. Pap. RMRS-RP-76. Fort Collins, CO: U.S. Department of Agriculture,
Forest Service, Rocky Mountain Research Station. 10 p.
Lake, Janice Ann; Wade, Ruth Nicola 2009. Plant-pathogen interactions and
elevated CO2: morphological changes in favour of pathogens. Journal of
Experimental Botany. 60(11): 3123-3131.
Linton, M. J.; Sperry, J. S.; Williams, D. G. 1998. Limits to Water
Transport in Juniperus osteosperma and Pinus edulis: Implications for
drought tolerance and regulation of transpiration . Functional Ecology.
12(6): 906-911.
Lutz, J.A.; van Wagtendonk, J.W.; Franklin, J.F. 2009. Twentieth-century
decline of large-diameter trees in Yosemite National Park, California,
USA. Forest Ecology and Management. 257(11): p. 2296-2307.
McDowell, Nate; Pockman, William T.; Allen, Craig D.; Breshears, David D.;
Cobb, Neil; Kolb, Thomas; Plaut, Jennifer; Sperry, John; West, Adam;
Williams, David G.; Yepez, Enrico A. 2008. Mechanisms of plant survival
and mortality during drought: why do some plants survive while others
succumb to drought?. New Phytologist. 178(4): 719 - 739.
Millar, C.I.; Westfall, R.D.; Delany, D.L. 2007. Response of
high-elevation limber pine (Pinus flexilis) to multiyear droughts and
20th-century warming, Sierra Nevada, California, USA. Canadian Journal of
Forest Research, Volume 37(12): 2508-2520.
Mueller, Rebecca C.; Scudder, Crescent M.; Porter, Marianne E.; Trotter,
R. Talbot III; Gehring, Catherine A.; Whitham, Thomas G. 2005.
Differential tree mortality in response to severe drought: evidence for
long-term vegetation shifts. Journal of Ecology. 93(6): 1085-1093
Niinemets, Ülo; Valladares, Fernando 2006. Tolerance to shade, drought,
and waterlogging of temperate northern hemisphere trees and shrubs.
Ecological Monographs. 76(4): 521?547.
Six, D.L.; Bentz, B.J. 2007. Temperature determines symbiont abundance in
a multipartite bark beetle-fungus ectosymbiosis. Microbial Ecology. 54(1):
112-118.
van Mantgem, Phillip J.; Stephenson, Nathan L.; Byrne, John C.; Daniels,
Lori D.; Franklin, Jerry F.; Fulé, Peter Z.; Harmon, Mark E.; Larson,
Andrew J.; Smith, Jeremy M.; Taylor, Alan H.; Veblen, Thomas T. 2009.
Widespread Increase of Tree Mortality Rates in the Western United States.
Science. Vol. 323(5913): 521-524.
Walther, Gian-Reto; Roques, Alain; Hulme, Philip E.; Sykes, Martin T.;
Py?ek, Petr; Kühn, Ingolf; Zobel, Martin; Bacher, Sven; Botta-Dukát,
Zoltán; Bugmann, Harald; Czúcz, Bálint; Dauber, Jens; Hickler, Thomas;
Jaroík, Vojtech; Kenis, Marc; Klotz, Stefan; Minchin, Dan; Moora, Mari;
Nentwig, Wolfgang; Ott, Jürgen; Panov,Vadim E.; Reineking, Björn;
Robinet,Christelle; Semenchenko, Vitaliy; Solarz, Wojciech; Thuiller,
Wilfried; Vilà, Montserrat; Vohland, Katrin; Settele, Josef 2009. Alien
species in a warmer world: risks and opportunities. Trends in Ecology &
Evolution - 26 August 2009.
Watt, Michael S.; Kriticos, Darren J.; Alcaraz, Samantha; Brown, Anna V.;
Leriche, Agathe 2009. The hosts and potential geographic range of
Dothistroma needle blight. Forest Ecology and Management Volume 257( 6):
1505-1519 .
West, A. G.; Hultine, K. R.; Sperry, J. S.; Bush, S. E.; Ehleringer, J. R.
2008. Transpiration and hydraulic strategies in a piñon?juniper woodland.
Ecological Applications. 18(4): 911?927.
Zeng, Hongcheng; Chambers, Jeffrey Q.; Negrón-Juárez, Robinson I.; Hurtt,
George C.; Baker, David B.; Powell, Mark D. 2009. Impacts of tropical
cyclones on U.S. forest tree mortality and carbon flux from 1851 to 2000.
Proceedings of the National Academy of Sciences USA. 106(19): 7888-7892.
Please email me if you have suggested publications to add.
- Susan
PS - I apologize to those of you that received several copies of this
message.
Susan J. Frankel
Sudden Oak Death Research Program Manager
USDA-Forest Service, Pacific Southwest Research Station
Mailing address:
PO Box 245
Berkeley, CA 94701
Street address:
800 Buchanan Street, West Annex Building,
Albany, CA 94710-0011
Phone: 510-559-6472 FAX :510-559-6440
sfrankel(a)fs.fed.us
_________________
Dear Colleagues:
Please find enclosed some new dates and new information regarding our
upcoming meeting, including cost of registration and accommodation
suggestions as well as abstract formats. You are kindly invited to
circulate this message among colleagues you think might be interested
in the meeting. Please also visit the web site for more information.
Don't hesitate to contact the organizers for more information.
Apologies for those who received this message twice.
Hope to see you in Florence!
Salvatore Moricca
Richard Hamelin
http://www.iufro.org/science/divisions/division-7/70000/70200/70205/
Hi Mike, and others who have responded,
Kevin Smith's review "An organismal view of dendrochronology" in
Dendrochronologia mentions examples of white rings that develop in poplar
and birch in response to insect defoliation or crown loss in winter
storms.
I am not sure what would cause dark rings in oak, but agree that it is
something that is activating a compartmentalization response and/or
creating a barrier zone. Because these occurrences are a complete, single
growth ring that encompasses the whole tree, I suspect an environmental
factor.
Mike, you might check for a correlation between the year of the ring and
winter injury, late or early frost, an extreme winter or summer
temperature event, or maybe even flooding or insect defoliation.
In response to Ed Barnard, I don't think these rings indicate oak wilt, as
infections in white oaks that survive the first year generally show up as
incomplete and spotty dark rings, with additional partial dark rings in
the same affected areas the following year in surviving white oaks. Among
oaks, red oaks die very quickly of oak wilt, so you wouldn't see this long
term survival.
On a different dendrochronology note:
If anyone is familiar with "islands" of enclosed phloem in red or live
oaks that apparently generate a new layer of xylem-generating cambium
after cambium injury please let me know. I have found this response in
several oak species after attack by the cambium-feeding gold-spotted oak
borer (GSOB), Agrilus coxalis, which is now a problem pest in Southern
California.
I am developing methods of back-dating such enclosed phloem to reconstruct
the history of the pest's residence and spread within and among stands,
and determine onset of tree mortality after attacks. So I need to know
other factors -- biotic or environmental -- that may generate similar new
layers of xylem external to patches of enclosed phloem. I have enclosed
pictures of the enclosed phloem and response wood that develops after GSOB
attack if inner phloem has not been killed by very heavy attacks and/or
pathogens associated with this decline.
Thanks!
Paul Zambino
><><><><><><><><><><><><><><><><><><><><><
Paul Zambino, Ph.D.
Plant Pathologist, Forest Health Protection
Southern California Shared Service Area
San Bernardino NF - SO
602 S. Tippecanoe
San Bernardino, CA 92408-3430
Ph: (909)382-2727 FAX: (909)383-5586
Cell: (909)215-0394
Email: pzambino(a)fs.fed.us
><><><><><><><><><><><><><><><><><><><><><
"Barnard, Ed" <barnare(a)doacs.state.fl.us>
Sent by: rg70300-forent-bounces(a)lists.iufro.org
11/21/2009 11:09 AM
Please respond to
"IUFRO RG 7.03.00" <rg70300-forent(a)lists.iufro.org>
To
"IUFRO RG 7.03.00" <rg70300-forent(a)lists.iufro.org>
cc
Subject
Re: [IUFRO RG 7.03 FORENT] Fwd: Dark rings in red oak logs
Folks (and particularly Mike Albers),
Very interesting! I really have no idea, being for the most
part a Pathologist in Florida dealing primarily with pines. As a
pathologist, a thought comes to mind, but you should try to verify even
the possibility of this with someone who deals with oak wilt (caused by
Ceratocystis fagacearum). You are (as I understand it) in an area where
this disease occurs, and red oaks are susceptible hosts, often displaying
vascular staining or streaking. Most of the time infected red oaks die,
but I do know that if infections of some vascular wilts are not lethal,
recovery can occur, sometimes ?compartmentalizing? the pathogen in
interior vascular tissues ? together with its associated vascular
staining. Any chance that these trees might be oak wilt survivors? This
could possibly be evaluated in a laboratory.
Ed
From: rg70300-forent-bounces(a)lists.iufro.org
[mailto:rg70300-forent-bounces@lists.iufro.org] On Behalf Of Mike Albers
Sent: Thursday, November 19, 2009 11:44 AM
To: rg70300-forent(a)lists.iufro.org
Subject: [IUFRO RG 7.03 FORENT] Fwd: Dark rings in red oak logs
Any idea what would cause dark rings in red oak logs as in the attached
pictures?
The dark rings run the length of the logs. So far this has been seen on a
number of sites in 3 or 4 counties in Minnesota. Not all red oak trees on
a site have the dark rings.
My first guess is that it is a barrier zone resulting from a wound or
injury of some type. However it seems strange that it forms a complete
cylinder that reaches the ends of the logs. I didn't see any logs where
the dark ring only went part way around a log. Also there were some logs
that had obvious injuries with decay and discoloration but these logs did
not form rings or even have distinct barrier zones going even part way
around the log.
I've only looked at logs like this while in the mill, not on the site
where they were harvested. At first, the thought was that these rings were
the result of something happening 16 to 17 years ago. This will take more
investigation, but it looks to me like the time period varies anywhere
from 6 to 35 years. Also at this time I can't say if the time period
varies ibetween sites, or if the time period varies from log to log on the
same site.
Any suggestions would be appreciated.
Mike Albers
Forest Health Specialist
MN DNR-Forestry
1201 E. Hwy. # 2
Grand Rapids, MN 55744
(218)-327-4115_______________________________________________
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To post a message to all list members, send email to:
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Any idea what would cause dark rings in red oak logs as in the attached pictures?
The dark rings run the length of the logs. So far this has been seen on a number of sites in 3 or 4 counties in Minnesota. Not all red oak trees on a site have the dark rings.
My first guess is that it is a barrier zone resulting from a wound or injury of some type. However it seems strange that it forms a complete cylinder that reaches the ends of the logs. I didn't see any logs where the dark ring only went part way around a log. Also there were some logs that had obvious injuries with decay and discoloration but these logs did not form rings or even have distinct barrier zones going even part way around the log.
I've only looked at logs like this while in the mill, not on the site where they were harvested. At first, the thought was that these rings were the result of something happening 16 to 17 years ago. This will take more investigation, but it looks to me like the time period varies anywhere from 6 to 35 years. Also at this time I can't say if the time period varies ibetween sites, or if the time period varies from log to log on the same site.
Any suggestions would be appreciated.
Mike Albers
Forest Health Specialist
MN DNR-Forestry
1201 E. Hwy. # 2
Grand Rapids, MN 55744
(218)-327-4115
Mike Albers
Forest Health Specialist
MN DNR-Forestry
1201 E. Hwy. # 2
Grand Rapids, MN 55744
(218)-327-4115
Mike Albers
Forest Health Specialist
MN DNR-Forestry
1201 E. Hwy. # 2
Grand Rapids, MN 55744
(218)-327-4115
Mike Albers
Forest Health Specialist
MN DNR-Forestry
1201 E. Hwy. # 2
Grand Rapids, MN 55744
(218)-327-4115
Mike Albers
Forest Health Specialist
MN DNR-Forestry
1201 E. Hwy. # 2
Grand Rapids, MN 55744
(218)-327-4115
A graduate research assistantship is available to support a student pursuing
an MS or PhD degree with my program through the Department of Forest and
Wildlife Ecology at the University of Wisconsin-Madison. A generous
stipend, medical benefits, and tuition waiver are included. Only candidates
with a strong background in plant and forest sciences, as well as plant
pathology and mycology, are encouraged to apply. Excellent abilities in
spoken and written English are required. Support can begin in fall semester
2010.
Please see the web page of the Department of Forest and Wildlife Ecology
(http://forestandwildlifeecology.wisc.edu/) and the link there for
application instructions. Information regarding recent activities in my
program can easily be obtained by searching the web for publications.
Glen R. Stanosz, Ph. D.
Professor of Forest Pathology
Department of Plant Pathology
Department of Forest and Wildlife Ecology
University of Wisconsin-Madison
1630 Linden Drive
Madison, WI 53706 USA
telephone: 608-265-2863
fax: 608-263-2626
email: grs(a)plantpath.wisc.edu
FOREST PATHOLOGY: research, teaching, and outreach to keep trees and forests
green and growing!
Colleagues - Please circulate to all interested persons:
The Missouri Department of Conservation is seeking candidates for the Forest Pathologist (Resource Scientist) position located in Columbia, Missouri, USA. The Pathologist partners with the Forest Entomologist to monitor forest health and provide forest health information to resource managers, landowners and the general public in Missouri. The Pathologist provides leadership in Department responses to emerging forest disease issues and conducts forest pathology research relating to forest health monitoring and resource management. The job description and information for applying online are available at this site:
http://mdc.mo.gov/about/jobs/<http://webmail/owa/redir.aspx?C=8fde18d6b1514768b1dbe8ad86318409&URL=http%3…>
Deadline for applications is January 15, 2010.
--------------------------------------------------------------
Robert Lawrence, Ph.D.
Resource Scientist - Forest Entomologist
Missouri Department of Conservation
1110 South College Ave.
Columbia, MO 65201
Tel: 573-882-9909, ext. 3303
Fax: 573-882-4517
E-mail: Robert.Lawrence(a)mdc.mo.gov<http://webmail/owa/redir.aspx?C=8fde18d6b1514768b1dbe8ad86318409&URL=mailto…>
---------------------------------------------------------------
Dear Forest Pathologists:
Mark your calendars! The Fourth International Rusts of Forest Trees
Conference will be held in beautiful Florence, Italy, May 3-7 2010.
Stay tuned for further details or visit the web site at
http://www.iufro.org/science/divisions/division-7/70000/70200/70205/activit…
Hope to see you in Florence!
Salvatore Moricca
Richard Hamelin
Nancy,
The problem is that it takes several years to produce a broom of a size
that results in culling, and hence the current culls are almost
certainly a legacy from before the time of chick weed control. The
broom in your picture is at least five years old.
So, even if chickweed control is effective, it will take several more
years before the damage disappears.
Infection by basidiospores occurs in the spring from telia on dead
foliage of the previous year, and the first symptom is a slight swelling
of the infected twig a year or more later. Two years after infection
the first systemically infected shoots appear. Assuming that chickweed
control became effective in 2007, then 2007 was the last possible year
of infection (from telia on 2006 chickweed foliage). The first
systemically infected shoots on these infections would have been
produced in 2009. They would be nearly impossible to find this late in
the year, but they should be visible early summer 2010 when the aecia on
their new shoots are in their full glory.
But there is a further consideration. Rusts of this sort typically have
wave years of infection. I would expect that the large majority of
brooms in a single plantation belong to a single or at most a few age
cohorts. This means that you may have to wait several years before you
can begin to be confident that the chickweed control has worked (or that
other hosts are involved).
Bart van der Kamp
UBC
Dear Forest Phytophthorologists,
This is a reminder that earlybird registration and abstract submission for
the 5th IUFRO Phytophthora diseases in forests and natural ecosystems
meeting close 31 October 2009. The meeting will begin in Auckland, New
Zealand on 7 March 2010 and we will travel together to Rotorua for the
remainder of the meeting, which will finish on 12 March 2010.
Further information is available at the conference homepage:
http://www.phyto2010.com/index.html
Regards, Tod Ramsfield
Tod Ramsfield, Ph.D.
Molecular Forest Pathologist
Forest Biosecurity and Protection
Scion*
Private Bag 3020
Rotorua
3046
New Zealand
Phone: 64-7-343-5534
Mobile: 64-27-366-1422
Fax: 64-7-348-0952
e-mail: tod.ramsfield(a)scionresearch.com
*Scion is the trading name of the New Zealand Forest Research Institute,
Ltd.
