Weber River Cooperative Weed Management Area
2005 USDA Grant Report
The CWMA conducted six general
planning meetings through the year, with 134 total attendance. Other meetings and
activities included;
Mapping
GPS Training Seminar 9 (January 5)
Twelve people attended and learned how to use a GPS instrument to map
weed locations. Lunch was provided.
Biological Control
"Biological Control of Invasive Plants in the United States"
Seven copies of the new book, "Biological Control of Invasive
Plants in the United States" were purchased and distributed to members of the CWMA.
These texts were very useful in the biological control tours and releases made through the
summer.
Dalmatian Toadflax Tour (May 17)
Thirteen people participated and learned to find and recognize the
Mecinus janthinus biological control insects and see the damage they do to the stems of
dalmatian toadflax. The establishment of these insects in three locations was verified.
Biological Weed Control Tour (June 30)
Fifteen people spent a day traveling to various biological control
release sites, identifying control organisms and seeing their effects. Lunch was served
Bio-control Releases:
Seven biological weed control insect species were purchased and released on various
infestations through the five counties of the CWMA.
Leafy Spurge
- June 21, Oberea erythrocephala,, eight releases, 840 total insects.
- June 21, Spurgia esulae, six releases, 300 galls.
Canada Thistle;
- June 30, Urophora cardui, four releases, 420 insects.
- June 30, Cassida rubiginosa, 840 insects were received, but after reviewing their
release status with the UDAF and APHIS, it was decided to not release them and they were
destroyed.
- Aug. 3, Ceutorhynchus litura, four releases, 420 insects.
Musk Thistle;
- July 12, Trichosirocalus horridus, 20 releases, 2,100 insects.
Dalmatian Toadflax;
- Aug. 3, Brachypterolus pulicarius, four releases, 420 insects.
- Aug. 3, Gymnetron antirrhini, four releases, 420 insects.
Collection Days:
- July 19, Aphthona lacertosa, Three people participated in collecting insects from a
previous release site in on Pineview Reservoir and released on a leafy spurge infestation
at the Browning Ranch.
- July 28, Diorhabda elongata, Three people participated in collecting 3,000 of these
insects from a release site nursery in Delta and releasing them on Tamarix infestations on
Antelope Island.
- July, At various times Cache County hosted collection days for leafy spurge insects.
- Aug 16, Eustenopus villosus and Bangasternus orientalis, one person collected these
insects from the Ben Lomond golf course site and released them on an infestation at the
Ogden Nature Center
Work Days:
Morgan Count;
- On June 8th, five spray trucks and thirteen people met at the Morgan County Road Shop
and sprayed 80 miles county road. They used 2,4-D, Banvel and Telar herbicides. The County
Council was very appreciative and sent a letter of thanks. They didn't have a Weed
Supervisor in their county at the time.
Causey Estates
- On August 14th, one ATV sprayer and two volunteers sprayed approximately two miles of
estate roads for diffuse knapweed. Five individuals removed five large bags of musk
thistle seed heads and pulled many rosettes.
Ogden Nature Center
- Met with the Director of the Ogden Nature Center and helped her develop a weed
management plan.
Antelope Island
- Volunteers spent 340 working on hand pulling weeds on the island. Additionally a large
sum of money was spent on herbicides and aerial application. Biocontrol insects were
released on musk thistle, Canada thistle and tamarisk.
Education
Utah's Noxious Weeds
- A tri-fold brochure was developed and published entitled, "Utah's Noxious
Weeds". Five thousand copies were printed on May 27th. They were distributed to the
Utah Department of Agriculture, the Natural Resources Conservation Service, Utah State
University Extension, the US Forest Service, Utah State Parks, several Soil Conservation
Districts and the County Weed Departments. The Forest Service utilized the brochure to
make signs for some of their trail heads and the Washington County Weed Department handed
them out at their County Fair.
Weed Mapping Seminar
- August 26, A weed mapping seminar was organized, with Dr. Steve Dewey as the instructor.
Twelve people attended and learned the basics of how to survey weeds over large areas
using GPS instruments. Those who attended represented Extension, Weed Boards, State Parks
and the Forest Service. Lunch was provided.
State Noxious Weed Awareness Meeting
- Three CWMA members attended the State Noxious Weed Awareness Meeting in Salt Lake City
and participated in determining state priorities.
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