Workshops, Presentations, and Papers
Publications:
Produced 6 newsletters called “Maggot
Mania News” for growers highlighting pesticide resistance, degree-day
modeling, trap cropping spatial rotation and mapping, sampling techniques, and
other alternative management methods. 2003-2006.
Bruck, D.J., Snelling, J., Dreves A. J. , Jaronski, S. 2005. Laboratory
bioassays of entomopathogenic fungi for control of Delia radicum (L.)
larvae. Journal of Invertebrate Pathology. 89:179-183.
Dreves, A. J., D. Dalthorp, A. G. Stone, and G. Fisher. Spring emergence
and seasonal flight activity of adult cabbage maggots, Delia radicum
(L.) (Diptera: Anthomyiidae) in western Oregon. Environmental Entomology.
Accepted Dec. 2005.
Dreves, A. J. and D. Dalthorp. Monitoring flight activity, oviposition,
and damage of the cabbage maggot, Delia radicum (L.) (Diptera: Anthomyiidae),
in Brassica root crops. (currently in progress, but not submitted yet;
2006).
Herring, P. 2005. Urban Farmer. Oregon's Agricultural Progress Summer 2005.
Dalthorp, D, and A. J. Dreves. Temporal and spatial management of cabbage
maggots, Delia radicum (L.) (Diptera: Anthomyiidae). (currently
in progress, but not submitted yet; 2006).
Oregon State University Extension Bulletins titled, “Take a Closer
Look: life cycle and biology of the cabbage maggot in Oregon.”
(Writing currently in progress, expected completion Mar 2006).
Oregon State University Extension bulletin titled, “Take a Closer
Look: Monitoring and Management of cabbage maggots.” (Writing currently
in progress, expected completion Mar 2006).
Created laminated educational 3” x 4" cards contained on a ring outlining
monitoring and IPM practices in bulleted format for easy grower use.
Nov 20, 02; Fort Lauderdale FL; Annual Entomological Society of America Meeting
Presentation & titled: MagNet: Insights into the Management of Root Maggots (Delia
radicum) in Brassicaceae Crops.
Dec 13, 02; OSU Corvallis OR; OSU-IPPC Round Table Discussion on IPM in Oregon:
15 minute talk on Cabbage Root Fly (Delia radicum) Management on a Regional
Scale. Included approaches, limitations, and outcomes.
Mar 1, 03; OSU; Horticulture Dept; Maggot Mania Newsletter #1 released to growers-Spring
Issue 03 (introduce project and objectives).
Mar 15, 03; NWREC Station-Aurora OR; GIS Regional Mapping Computer Demonstration-
"Why and Why not Use Field Mapping?" Hands-on Workshop: Grower Input, Computer
Use.
Apr 8, 03; Indianapolis IN; Fourth National Integrated Pest Management Symposium-Poster
MagNet: Maggot Management- IPM and GIS mapping.
June 15, 03; Wash DC; Invited Organic Transitions Grant Review Panel Member.
June 23, 03; Vancouver WA; EPA work planning meeting: Special Guest Talk titled,
Building an IPM Program and Ways to Measure Success.
June 26, 03; Aurora OR; MagNet: IPM strategies including monitoring, mapping and
treating for maggots; A 3-Hour Hands-on field day, which included: Monitoring
adult flight with yellow water traps; Assessing egg levels in a field to target
high infestation levels; Understanding life cycle & identification of fly; Mapping
damage using GIS techniques to more effectively time plantings; Application techniques
to increase effectiveness & timing of treatments.
July 1, 03; Corvallis OR; six additional laminated educational information cards
released for grower use.
Sept 18, 03; Aurora OR; Oregon Fresh Market Growers Association Meeting- Cabbage
Maggot IPM Program- Canada and US Vegetable Production Talk and Proceedings.
Feb 18-9, 04; Abbotsford BC Canada; Invited speaker to 46th Annual Horticulture
Growers' Short Course-Pacific Agriculture Show. Topic Presented, Maggot IPM and
presented a Mini-Workshop demonstrating use of laminated education cards as a
valuable guidance tool (see evaluation forms).
Feb 16, 04; Corvallis OR; Presented, How to Measure IPM Adoption-the PEST Plan."
A follow-up discussion involved: 1. Development of IPM Guidelines for Oregon;
2. Measurement of IPM adoption; 3. Measurement of IPM impact and risk reduction;
4. Maximizing benefits to other agencies and partners (commodity groups, ODA,
NRCS etc.).
Mar 7, 04; OSU; Horticulture Dept; MagNet Mania Newsletter -Spring 04 issue 3
(fungus use for maggot control).
Mar 16, 04; Corvallis OR; Presented, GPS-GIS IPM tool for Growers, a mini-workshop
demonstrating mapping and use of laminated educational IPM cards at Field Day
Events
Mar 31, 04 NWREC, Canby OR ?" A Round Table Grower Discussion titled, Where are
we headed in the Maggot World. Presented 2000-2003 data on: 1) phenology and CM
life cycle on how this relates to planting dates, damage levels, and harvest period;
2) 12 trials explaining best application techniques, chemicals with increased
efficacy, and new potential chemistries based on results; 3) spring cultivation
trials.
Nov 2, 04; Canby OR; Monitoring Training titled, Transfer of Technology to Scouts
and a Vegetable Grower Workshop titled, "Why monitor on the farm?"
Nov 16,04; Salt Lake City Utah; Entomological Society of America Meetings. Presented,
Know thy Enemy: Strategies for managing the cabbage maggot, Delia radicum
L.
Nov17, 04; Salt Lake City UT; Co-Moderator for Root Maggot Symposium titled, Insights
into Biology and Management of Root Maggot Pests.
Jan 19-22, 05; Pacific Grove CA; 25th Anniversary Ecological Farming Conference.
Presented, Lifestyles of the Top 10 Beasts on the Farm. Highlighted cabbage maggot
IPM.
Apr 19-20, 05; Portland OR; WCC-69 IPM Systems Tour- Highlighted Montecucco Farm
and the MagNet Project. Discussed their pest management system; synthesized IPM
practice use, system components and IPM behavior and limitations. IPPC Systems
Workshop Proceedings.
May 19, 05; Corvallis OR; OSU Horticulture Seminar Series. Presented, Are IPM
tools making it to the field?
June 22, 05; Aurora OR; Oregon Fresh Market Growers Association Spring Meeting-Vegetable
Production and Insect Management. Presented MagNet IPM project update.
July 29, 05; Corvallis OR; OSU Mini-College Master Gardener Workshop titled, Cabbage
Maggots and other pests in Action.
Aug 30, 05; Portland OR; IPM Indicators Workshop (USDA, CREES, IPM Regions, EPA):
Invited speaker presented, MagNet project and grantee's perspective on grant reporting.
Nov 3, 05; Canby OR; Discussion on recommending IPM practices to MagNet growers.
Jan 6, 06; Designing Field Spatial Rotation of Brassica Fields with Growers. NWREC
Station
Jan 11, 06; First draft Management Plan for Maggots in Brassica Production. Oregon
Horticulture Society. Portland OR
Monitoring Kit
We are offering our grower group a resin-coated 'artifact' of mounted eggs,
larvae, pupae, and adults as a reference piece and souvenir. In addition to
our "MagNet kit" we are including: a hand lens, emergent cage, a laminated
card booklet containing pest ID, life cycle, natural enemy id, monitoring
techniques, DD model, wild host sources, list of IPM tools, pertinent papers
on cabbage maggot management research, and a factsheet about cabbage
maggots.
IPM
Grower Rating = the PEST PLAN
IPM rating system = “Pest Plan”: All aspects of the project are designed to inspire grower interest in and adoption of IPM practices- from learning about cabbage maggot phenology and monitoring, to providing a supportive, collaborative, and information-rich environment of IPM techniques and systems thinking, and providing support to test out grower and researcher ideas in the field. We will encourage growers to sign up for the “Pest Plan” that is being evaluated by staff and growers. Growers will evaluate their progress in IPM currently through the use of a rating or point system based on their choices of best management practices and attitudes. This type of IPM continuum rating will be modeled after a similar program developed by the Wisconsin Potato and Vegetable Growers Association/World Wildlife Fund/University of WI collaboration for bio-intensive IPM potato production.
