Trace Organic Contaminants (PAHS, PCBs, and Pesticides) in Oysters
Organic Pesticides - Oregon State...
Transcript of Organic Pesticides - Oregon State...
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Organic Pesticides
January 11, 2011
Joe DeFrancesco
Oregon State University
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Organic Pesticides
I.! IR-4 BioPesticide Program
II. Search function for organic products
III. Organic Herbicide Efficacy
IV.! Acetic acid registration
V.! SWD Management
VI. Resource Guide
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What is IR-4?
IR-4 Mission and Structure
Commodity Liaison Committee (CLC)
Specialty Crops
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IR-4 Searchable
Products Database
http://ir4.rutgers.edu/Biopesticides/LabelDatabase/
index.cfm
or
http://ir4.rutgers.edu (home page)
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Check
box for
organic
products
only
Choose state
Click to search by a.i. or product
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http://www.omri.org/omri-lists
Check website for organic status
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Organic Herbicides
Post-emerge (contact)
–!Racer (sodium nonanoate; salt of fatty acid)
–!Natures Avenger (citrus oil)
–!Oregano oil (OSU-liverwort trials)
–!Acetic Acid (20%)
Pre-emerge (prevents seed germination)
–!Corn gluten meal
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Broadleaf Weed Control (shepherds purse, purslane, hairy nightshade)
•! Racer –! CA: 88%
–! ND: 11%
•! Acetic Acid (20%) –! ND: 6% –! OR: 90+%
•! Natures Avenger –! CA: 84%
–! OR: 80%-98%
•! Oregano Oil (2%)
–! OR: 80% (liverwort)
•! Corn Gluten Meal –! ND: 0%
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Weed Pharm Acetic Acid Herbicide
•! 20% concentration
•! Food-grade acetic acid
•! Only acetic acid product approved as an
herbicide for use in food crops
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SWD Management
•! When to take action? –! SWD appear in traps and the presence of vulnerable
fruits (color)
–! Follow up applications based on subsequent trap captures, product persistence, environmental conditions and irrigation practices.
•! How to take action? –! Complete coverage of the canopy is important –! SWD most active in early AM and at dusk
–! Rotate chemical classes to delay resistance development
–! The label is the law
–! Be cognizant of REI, PHI, MRL!s for your target markets
–! Protect pollinators http://extension.oregonstate.edu/catalog/pdf/pnw/pnw591.pdf
–! Materials to consider!.
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Pesticides
•! Organic Products –! Spinosyns (Entrust) ~5-7 days residual control
•! GF-120 is not effective against SWD
–! Pyrethrum (Pyganic) active against adults but has no residual activity
–! Oils are generally effective against adults but have no residual control – Often removes waxy bloom on fruit & causes spotting
–! Aza-Direct is not an effective adulticide
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Cultural Tools
1.! Timely Harvest •! Harvest fruit when ripe to limit exposure to SWD
•! Shorten harvest interval
2.! Field Border Management •! Unmanaged field edges and adjacent host crops
•! Mixed small fruit plantings are more susceptible
•! Wild blackberries may be a confounding factor
3.! Mass Trapping* •! Removing adults may minimize damage
4.! Sanitation* •! Disposal of infested fruit
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5!"#)-$+6$"#-#)"(&$(,""#7%28$4#*79$
#:.2+"#/$
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Potential for Mass Trapping? ;)7$<#$().%,"#$#7+,9&$=*#-$<*%&$)7$)4,7/)7(#$+6$
)>")(?3#$4)*%#/$%").-0$$
•! Successfully used in China at 60-100 traps/acre (Wu et al.
2007)
•! Traps must be more attractive than fruit to be successful •! Trap before SWD lay eggs or overwinter
•! Research being performed in Willamette Valley in no-spray U-pick Blueberries with history of SWD
@%#A-$4#*79$"#-#)"(&#/$6+"$%&#*"$.+%#7?)2$%+$(+7%"+2$B1C$*7$*7%#9")%#/$-8-%#A-$
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Sanitation D+<$()7$)$9"+<#"$."+.#"28$/*-.+-#$+6$B1C$*76#-%#/$6",*%0$
•! E+-%F&)"3#-%$•! G#H#(%#/$2+)/-$
•! B#)-+7)2$*76#-%#/$6",*%$
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!"/&%,%'0*1#23'%4-#,$
•!B+2)"*I*79$
•!J)99*79$
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•!;+7%"+2$
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How about biological control?
–! Lab studies showed 12-68% suppression of SWD
–! Affect egg/larval stage of
SWD •! ;87*.*/$.)")-*%+*/-$6"+A$*76#-%#/$
42,#4#""*#-$*7$LMMN$)7/$LMOM$
•! E%#"+A)2*/$.)")-*%+*/-$6"+A$*76#-%#/$
(&#""*#-$*7$LMOM$
•! P+"#*97$#:.2+")?+7$.2)77#/$$
•! Q+79F%#"A$9+)2$%+$@C$7)%,")2$#7#A*#-$%+$"#/,(#$B1C$
.+.,2)?+7-$
•! R*7,%#$.*")%#$4,9-$6+,7/$*7$*76#-%#/$42,#4#""*#-$)7/$
()7#4#""*#-$
@%#A-$4#*79$"#-#)"(&#/$6+"$%&#*"$.+%#7?)2$%+$(+7%"+2$B1C$*7$*7%#9")%#/$-8-%#A-$
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Where to go for Information?
•! OSU SWD Website -
http://swd.hort.oregonstate.edu/
•! Northwest Berry and Grape Information Network - http://berrygrape.org/
•! Peerbolt Crop Management -
http://www.peerbolt.com/swd/
•! UC IPM Website - http://www.ipm.ucdavis.edu/IPMPROJECT/workshop-spottedwing_drosophila.html
•! WSU SWD Website - http://www.mountvernon.wsu.edu/ENTOMOLOGY/pests/SWD.html
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Resource Guide for Organic Insect
and Disease Management
Published by Cornell University
Cultural information and management
practices
Organic materials fact sheets
Appendices: plant resistance, trap cropping,
habitats for beneficials, other resources
Web site: http://www.nysaes.cornell.edu
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Thank You