Cornell Cooperative Extension of the
~~~Commercial Horticulture Electronic Newsletter~~~
Volume 8, Issue 6-7
June/July 2008
Participating Counties: Orange * Dutchess * Putnam *
Editor: Rosemarie S. Baglia
http://www.cce.cornell.edu
· Viburnum Leaf Beetle Found In
· 2008 Cornell Floriculture Field Day Registration NOW
Open!
· Register Online 2008 Cornell University Landscape
Horticulture Short Course!
· Twilight Meeting for Christmas Tree Farmers to Focus
on Weed Management
· New York Steps up Action to Halt the Spread of
Tree-Killing Beetles & Other Threats to Forests
· Mustard, Canola Cultivars Able to Enhance Weed
Management
· CleanSweepNY is Coming Back to the Hudson Valley this Fall
· Regional Updates
o Orange
o Putnam
· 2007-2008 Regional Horticulture Calendar of Events
· Other Professional Horticulture Programs of Interest
Viburnum Leaf Beetle found in Westchester
County!!!
Cornell Cooperative Extension (CCE)
Viburnums vary in their susceptibility to the viburnum leaf beetle, from those that are categorized as
"highly susceptible" to those that are nearly immune. European cranberrybush viburnum (Viburnum opulus),
American cranberrybush viburnum
(Viburnum opulus
var.
Weston’s research group has developed a number of management strategies for viburnum leaf beetle, which are detailed on the Viburnum Leaf Beetle Citizen Science website at www.hort.cornell.edu/vlb/ .
Although a variety of effective control measures have been identified, Weston
is hoping to develop non-pesticidal control measures
using biological control. Gaylord Desurmont, a
graduate student in Dr. Weston’s lab, is beginning preliminary research using
tiny wasps from
Follow-up of the discovery of viburnum leaf beetle in
Written by Jerry Giordano, Cornell Cooperative Extension of Westchester County
2008 Cornell Floriculture Field Day Registration NOW Open!
On Tuesday, July 22, 2008,
(3.25 HSW for the morning session, 2 credits EA & HSW for the
afternoon).
Discover creative uses of plant material while viewing entries in the 5th
Annual Kathy Pufahl Memorial Container Design
Competition, or even better submit a container of your own! Mixed
containers will be displayed and judged with all proceeds benefiting Crohn’s Disease research. To enter the container
contest; contact Karen Hall,
You may also be interested in attending a hands-on workshop “IPM In-Depth” for
ornamental producers July 21, 2008 from 1:00-5:00 PM on the Cornell
Campus. This workshop has been submitted for NYSDEC pesticide applicator
recertification credits.
To register for these educational opportunities check out the Cornell website: http://www.greenhouse.cornell.edu/
Registration forms have been posted. For questions and additional
information, please call Dolores Higareda at
607-255-1789 or email at dh29@cornell.edu.
Submitted by Neil Mattson, Assistant Professor and Floriculture Extension
Specialist,
Register Online 2008 Cornell
University Landscape Horticulture Short Course!
Wednesday, July 23 Thursday July 24, 2008
Cornell University Campus,
The program is for Arborists, Landscape Maintenance Professionals/Designers,
and Nursery Operators who wish to receive the latest research information about
topics that pertain to the design, establishment, and care of landscapes.
It will consist of classroom instruction and on-site visitations in the
Professional Continuing Education Credits will be Awarded.
To Register and Book Accommodations Visit:
www.register123.com/event/profile/form/index.cfm?PKformID=0x5928965001
Registration Deadline is July 11, 2008!!!
Written by Paul A. Weston,
Twilight Meeting for Christmas Tree Farmers to Focus on Weed Management
The Hudson Valley Commercial Horticulture Education Program of Cornell
Cooperative Extension presents Weed Control in Christmas Tree Plantations. This
twilight meeting will be on Wednesday, August 6 at Hurd’s
Orchard and Christmas Tree Farm located at 2187 Route 32 in Modena,
NY from 6:00pm to 8:30pm. The fee is $35 per person if pre-registered by
Monday, August 4, and $45 per person after registration deadline. Fee includes
light refreshments. Eligible participants will receive 2.5 NYSDEC Pesticide
Re-certification Credits Categories 3A, 10 and 25.
This hands-on workshop in the field will help growers identify weeds and best
management options for their Christmas tree farms. Participants will learn
about herbicides, weed barriers, and weed management for new plantings. The
guest speaker is Dr. John Ahrens of the Connecticut Agricultural Experiment
Station. Dr. Ahrens is well known to many Christmas tree farmers and has served
as the Director of the National Christmas Tree Growers Association.
For more information or to pre-register contact Teresa Rusinek at 845-340-3990 or Stephanie Mallozzi
at 845-677-8223 ex. 104.
New York Steps up Action to Halt the Spread of Tree-Killing Beetles & Other
Threats to Forests
90 Day Emergency Regulation on Movement of Firewood in NYS
Transportation of Untreated Wood Restricted; Campers Help Needed
New York has taken new efforts to stop the influx and spread of
tree-killing pests such as the Emerald Ash Borer, Asian Longhorned
Beetle and Sirex Wood Wasp by restricting the
importation, transportation and sale of untreated firewood.
No person shall move Untreated Firewood produced, from trees that are grown
in
The action closely follows measures imposed by
Many exotic pests can be transported long distances unintentionally via human
activity especially the hauling of firewood. To limit this possibility,
effective immediately
Notably, the regulations do not affect homeowners cutting wood on their own
property for use on that same property. They also do not affect firewood being
transported through
The action to step up protections of forests across
The purpose of this emergency rule is to reduce the risk of introduction and spread
of invasive insects and diseases of trees by preventing untreated firewood from
entering
This emergency regulation is in effect for 90 days beginning June 3, 2008.
For more information, please see the frequently asked questions at: www.dec.ny.gov/animals/44008.htmlpage.
The complete emergency regulation can be viewed at www.dec.ny.gov/regulations/2359.html.
Submitted by Stephanie D. Mallozzi, Cornell
Cooperative Extension Dutchess County
Mustard, Canola Cultivars Able to Enhance Weed Management
A new study has found that cultivars can contribute
significantly to enhanced integrated weed management with reduced herbicide use
in oilseed-based cropping systems. The study is published in the latest issue
of Weed Technology.
Weeds are perceived by many farmers as being the greatest cause of yield loss
in agricultural crops. The increasing cost of herbicides in intensive crop
production systems and herbicide resistance in weeds has renewed interest in
exploiting crop competitiveness to manage weeds. Variation in competitive
ability against weeds exists not only among crop species but also among
cultivars within species. Researchers attribute increased competitive ability
among cultivars to early seedling emergence, seedling vigor, rapid root growth
and rate of leaf expansion, early root and shoot biomass accumulation and
canopy closure, and plant height.
The present study was conducted from 2003 to 2006 at four sites across semiarid
prairie ecoregions in western
The results of this study highlight the wide range in weed suppressive ability
of canola and mustard cultivars. Differences in weed-competitive ability among
crop types, such as yellow mustard and canola-quality mustard, tended to be
greater than differences among cultivars within a crop type. Cultivars
introduced in the future that emerge quickly after germination, are tall, and
have rapid early-season biomass accumulation might best be able to suppress
weed growth and interference.
To read the entire study, visit www.allenpress.com/pdf/i0890-037X-22-1-182.pdf
[Weed Suppression by Canola and Mustard Cultivars;
Weed Technology], 2008; Vol. 22 (1):182-185
Submitted by Lucy Joyce, Cornell Cooperative Extension Orange County
CleanSweepNY is Coming Back to the
Hudson Valley this Fall
CleanSweepNY is a term used by state and
local governments to describe in one word any effort to remove cancelled,
unwanted, unusable, or otherwise obsolete pesticides from holders who may have
originally purchased these products during the course of agricultural or
non-agricultural business activities. CleanSweepNY
has also included the removal of mercury manometers and triple rinsed metal or
rigid plastic drums, pails, jugs, or bottles that formerly held crop protection
and other pesticide products. School chemicals are also accepted at CleanSweepNY collection events and are safely and properly
disposed of.
Preregistration is necessary and registration form
packets will be mailed to those wishing to participate.
CleanSweepNY collection events do not target the
general public since home and garden pesticides are accepted in Household
Hazardous Waste (HHW) collections. Commercially applied or larger quantities of
pesticides are usually excluded from local HHW collections. In
CleanSweepNY will be held the week of November 2nd in
three locations in the
For specific dates and more detailed information visit www.cleansweepny.org/index.cfm
Submitted by Stephanie D. Mallozzi, Cornell
Cooperative Extension Dutchess County
2008 Regional
Updates
Orange County
This past month we have been seeing a
variety of pests and diseases here in Orange County. INSV (Impatiens
Necrotic Spot Virus) has been identified in some greenhouse plants, Anthracnose
is prevalent on Sycamore, Oak, and Maple trees, and widespread damage on
Forsythia due to Pseudomonas Blight (Pseudomonas syringae)
associated with ice nucleation injury.
In our county diagnostic lab we have also seen Four Lined Plant Bug, Leaf Spot
on Rudbeckia, numerous Japanese Beetle
adults, and Lace bug, and have had many calls on Gypsy Moth.
Submitted by Rose Baglia,
Spruce Spider Mites, Oligonychus ununguis
Spruces, including dwarf
If damaging populations are present, refer to the 2008 Pest Management Guide
for Commercial Production and Maintenance of Trees and Pests (found electronically
at http://ipmguidelines.org/treesandshrubs/content/CH02/default5.asp)
Note that we have missed the earlier windows
for control, and are now looking at a late-August through Mid-September control
window.
The following two fact sheets are
provided for insect and symptom identification as well as insight into the
mite's life cycle. However, pesticides mentioned in these fact sheets may
not be registered for use in
www.entomology.umn.edu/cues/Web/204SpruceSpiderMite.pdf
www.ppath.cornell.edu/trees/SprSpMite.html
www.nysipm.cornell.edu/ornamentals/Spruce_spider_mite.asp
Submitted by Jennifer Stengle,
Cornell Cooperative Extension
2007-2008 Horticulture Programs for Professionals
Cornell Cooperative Extension of the
*Christmas Tree Twilight Meeting
August 6 2008, 1-5 PM Herds Orchard and Christmas Tree Farm, Modena, NY
Contact: Stephanie Mallozzi (845) 677-8223 x104,
Teresa Rusinek (845) 340-3990
This is a hands-on, in the field program focusing on professional Christmas
tree weed management issues.
Other Professional Horticulture Programs of Interest
IPM In-Depth*
July 21, 1-5 PM, Cornell Campus,
This hands-on program will focus on pest management.
Register by contacting Elizabeth Lamb at 607-254-8800 or eml38@cornell.edu.
Floriculture Field Day*
July 22, 2008, Cornell Campus, Ithaca, NY
5th Annual Kathy Pufahl Memorial Container Design
Competition
To register for the program or for other program information contact Dolores Higareda at 607-255-1789 or at dh29@cornell.edu. To enter the
container contest; contact Karen Hall,
Landscape Horticulture 2008 Short Course*
Cornell campus on July 23-24, 2008
(starting at 10:00 a.m. on Wednesday, 7/23 and concluding at noon on Thursday,
7/24 The cost of the full course is $125; Day 1 only is $95 and Day 2 only is
$60. Recertification credits will be offered for NYS DEC Pesticide
recertification credits; ISA, CNLP, and ASLA Professional Continuing Education
Credits will also be awarded. For more information contact Paul Westin at
607-255-0165 (Voice) or email paw23@cornell.edu
or Nina Bassuk at 607-255-4586 or nlb2@cornell.edu. To register online,
please go to the following website: www.register123.com/event/profile/form/index.cfm?PKformID=0x5928965001
).
NYS Releaf
Conference
July 25-26, 2008 at the Cornell
Campus,
Certified Landscape Technician Training
Contact: NYSTLA at (914) 993-9455 or visit www.nystla.com.
An optional national testing program to recognize proficiency
of qualified landscape professionals.
Certified Nursery Professional Training Program
Contact: In Dutchess, Putnam & Westchester:
Scott Olivieri, (914) 682-4224; In Orange, Rockland
& Ulster: Mark Masseo (845) 658-9148
By passing this exam you can earn the title Certified
Nursery Professional (CNP). Contact your New York State Nursery and
Landscape Association, listed above, for more details.
Cornell
Cooperative Extension County Commercial Horticulture Educators
Dutchess: Stephanie Mallozzi, sdm10@cornell.edu, 845-677-8223 x 104
Orange:
Rosemarie Baglia, rsb22@cornell.edu, 845-344-1234
Putnam: Diane
Olsen, dko3@cornell.edu, or Jennifer Stengle,
jjs95@cornell.edu, 845-278-6738
Rockland:
Donna Cooke, dmc72@cornell.edu, or Paul Trader, pwt2@cornell.edu, 845-429-7085
Ulster: Teresa Rusinek, tr28@cornell.edu, 845-340-3990
Westchester:
Rick Harper, rwh26@cornell.edu, 914-946-3005
Sullivan:
Marianna Quartararo, mdq2@cornell.edu, 845-292-6180 x
112
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