integrated pest management in arboriculture
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Integrated Pest Management in Arboriculture
Igor Laćan
Neonic slides courtesy of
Dr. Andrew Sutherland,
Herbicide info. from
Dr. Cheryl Wilen,
UCIPM
CISR, UC Riverside
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Outline
Pest developmentsof 2015…
please tell me what I am missing…!
Neonic situations by Dr. Andrew Sutherland
Glyphosate fun Roundup round-ups…
Discussion (rotten fruit throwing, etc.)
MENTION OF ANY PESTICIDE NAMES IS
NOT AN ENDORSEMENT NOR A RECOMMENDATION
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four elements of
a pest problem
Plant
pathology
Host
Pest Environment
Time
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Integrated Pest Management (IPM)
IPM is a decision-making process
that uses all available pest management strategies,
including cultural, physical, biological & chemical control
to prevent economically damaging pest outbreaks
& reduce risks to human health & the environment
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Drought and pests: Eucalyptus longhornedborer
(or: watering can be a part of IPM!)
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Integrated Pest Management (IPM)
IPM is a decision-making process
that uses all available pest management strategies,
including cultural, physical, biological & chemical control
to prevent economically damaging pest outbreaks
& reduce risks to human health & the environment
Environmentally Friendly or Less-Toxic Pest Management
• is an ecological strategy
• for preventing and reducing pest problems
• with minimum adverse impact on human health,
non-target organisms, and the environment.
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Outline
Pest developmentsof 2015…
please tell me what I am missing…!
Neonic situations by Dr. Andrew Sutherland
Glyphosate fun Roundup round-ups…
Discussion (rotten fruit throwing, etc.)
MENTION OF ANY PESTICIDE NAMES IS
NOT AN ENDORSEMENT NOR A RECOMMENDATION
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Prevention example: Goldspotted oak borerAgrilus auroguttatus
Host: Live oaks (Coast,
Canyon); California black oak
Range: Riverside and San
Diego Counties
CISR, UC Riverside
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Polyphagous shothole borer and Fusarium dieback
Range: Los Angeles, Orange, Riverside and San Bernardino Counties
Akif Eskalen,Eskalenlab.ucr.edu
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How did these
pests get here….?
Poster by Ed Lum
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Prevention example:Thousand cankers diseaseGeosmithia morbida
Host: Walnuts (rarely the
edible one)
Vector: Walnut Twig Beetle
Pityophthorus juglandis
Range: state-wide
A.D. Graves
J.K. Hasey
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Drought and pests:Foamy bark cankeron stressed oaks
Eskalenlab.ucr.edu
Management: (1) reduce stress (water!); (2) prevent construction damage;
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Indirect stress:Pitch cankeron Monterey pine
Individual infections,
may progress
down the branches
Management: (1) prevent stress (water!); (2) prune out in initial stage(3) Suppress beetles, if present
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Recurring problem:
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Reminder:
Thresholds
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“…If you observe more than 8 to 10
oakworms more than 1/4 inch long,
defoliation may occur if oaks are not
sprayed.
Alternatively, a density of 25
oakworms per 100 shoot terminals has
been suggested as a treatment
threshold.”
Oakworm as an example of thresholds-setting
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fear…
vs.
reality…
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Other strange things…
(1) Cankers on ‘Marina’ strawberry tree
(2) Bacterial leaf scorch on…? (oleander, liquidambar)
(3) Your turn!
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Tree species selection
is a critical component
of pest management
Photos: USDA
& should consider both
the individual tree AND
the other urban trees
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Elsewhere 1: Emerald Ash BorerAgrilus planipennis
www.emeraldashborer.info
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Pest Vulnerability Matrix
Construction
1 Obtain pest-host
information
2 Arrange in table,
indicate severity
3 Verify local importance
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Reminder of neonicotinoid names/uses
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Neonic challenges: secondary pest outbreaks
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Neonic challenges: nontarget damage
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Different neonics = different toxicity to bees
FoE, 2013
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Alternative chemistries (C. Sadoff, 2015)
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• 510 670 5624 office
• 510 499 2930 cell
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Outline
Pest developments of 2015…
please tell me what I am missing…!
Neonic situations by Dr. Andrew Sutherland
Glyphosate fun Roundup round-ups…
Discussion (rotten fruit throwing, etc.)
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Glyphosate
Glyphosate (Roundup®)
October 2015: IARC Report
November 2015-now: pandemonium…
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Glyphosate: What did IARC actually say…
https://www.youtube.com/watch?v=CbBkB81ySxQ
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Glyphosate: some details behind the IARC rating…
~ based on the strength of evidence; NOT on the degree of risk
(no info on how carcinogenic, how many, what cancers etc.…)
~ in other words: how certain we are that it might be dangerous;
NOT “how dangerous” it is
~ Example: banana peel accidents vs. car accidents
but all this probably will not matter much…
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Weed management in the new era…
1: Get communicatin’…! (emphasize IPM context, process)
2: Follow developments in your County and around the Bay
(e.g., San Francisco)
3: Look for resources – UC, for example
4: Continue communicating!
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Weed management in the new era: alternatives
(1) hand weeding, edging, mulch, and mowing...
(2) The closest thing : glufosinate (Finale, Cheetah, others);
a non-selective herbicide, limited translocation.
but has a Warning label (vs. Caution for glyphosate)
(3)For smaller weeds: contact non-selective
Suppress, or Avenger (org).or lower risk, e.g. Scythe.
(4) Could try a combo: a grass- selective translocated -
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Weed management in the new era: alternatives 2
(1) hand weeding, edging, mulch, and mowing...
(2) glufosinate (Finale, Cheetah, others);
(3)For smaller weeds: contact non-selective organics
(4) Or a combination of:
a grass-selective transl. (fluazifop, sethoxydim, clethodim)
+
a broadfelaf-selective herbcide e.g., Turflon, Lontrel.
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