INSECT MANAGEMENT SNAPSHOT 2014

Always read the
product label!
INSECT MANAGEMENT SNAPSHOT 2014
UMaine Extension (with help from the UMass Cranberry Chart Book)
Pest Management Office || 491 College Ave || Orono, ME 04473
Insecticide
Group
28
PRACTICE / PRODUCT
Altacor (chlorantraniliprole)
4-A
4-A
4-A
4-A
Actara (thiamethoxam)
2 to 4 oz
#Assail 30 SG (acetamiprid)
4 to 6.9 oz
#Belay (clothianidin)
4 oz
#Scorpion 3.5-7 fl oz || #Venom 2 to 4 oz
(examples: Dipel DF,
Biobit, and Xentari)
1-B
1-B
1-B
21 
23 
6 oz
fall flood 
late-water flood 
spring flood (24 hours) 
spring flood (48 hours) 
Targets caterpillars; Do not exceed 9 oz/season; Good system required for efficacy;
No acute mammalian toxicity; safe on bees!
Do not exceed 12 oz per season; low rate works well; high bee toxicity.
Timing and coverage are critical, as target insects must ingest the material.
Post-bloom only! (neonicotinoid; high bee toxicity; long soil half life) Labeled for Tipworm.
For flea beetles & leafhoppers; ‘Suppression only’ of tipworm, fireworm, fruitworm, weevil,
& spanworms; Toxic to bees on direct exposure or to residue on blooming crops and weeds.
For blackheaded fireworm and spring-only cranberry weevils; Hold water 1 day.
For immature insects only; Products must be consumed by the larvae (thus, thorough
coverage is essential). Rimon kills tipworm larvae but not tipworm flies, as it must
be ingested; It’s non-toxic to adult bees & can be used up to 3x per season.
For all diazinon formulations: Toxic to bees; highly toxic to birds & aquatic
organisms; hold water for at least 3 days; 7-day PHI; 5 day REI; no more than
three apps per season & 14-day spray interval except AG500 which is 7 days.
Sept. 27th-Oct. 7th for 3 to 4 weeks (for cranberry fruitworm control).
April 21st-26th, hold for 30 days (for cranberry fruitworm and southern red mite control).
Late May for cutworms (for example: false armyworm, blossomworm);
Mid to Late May for 1st-generation blackheaded fireworm.
#Imidan 70W (phosmet)
1.33 to 4 lbs For fireworm and fruitworm; if heavily infested, go with the 4 lb-rate.
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
#Lorsban 4E & Advanced || Nufos 4E 3 pt
Extremely toxic to fish; Hold water at least 5 days; use only 2 times per
Hatchet || Chlorpyrifos 4E AG
3 pt
Lorsban 75 WG
2 lbs
Nexter (pyramite)
3.5 to 7.0 oz
#Oberon (spiromefesin)
12 to 16 fl oz
#Orthene 97 || Acephate 97UP
1 lb
Acephate 90WSP and 90 WDG
1.1 lb
Acephate 90 Prill
1.1 lb
3 and 27A  Pyronyl crop spray
up to 12 oz
1-A #Sevin XLR Plus & 4F, Carbaryl 4L 1½ to 2 qt
Sevin 80S (Solupak)
1.88 to 2.5 lb
1-B
5
NOTES (PHI = pre-harvest interval; REI = restricted entry interval)
Rate depends on the product; works only on caterpillars; allow time for control, as product must be
consumed by larvae (so thorough coverage essential); best in low gallonage, against young larvae,
in well-timed systems; Combination with other insect control products may control larger caterpillars.
Confirm 2F (IGR ecdysone mimic)
16 fl oz
Intrepid 2F (IGR ecdysone mimic) 10 to 16 fl oz
Rimon 0.83EC (IGR chitin inhibitor)
12 fl oz

Diazinon 50 W
4 to 6 lb
Diazinon AG500
4 to 6 pt
Diazinon AG600
51 to 76.5 oz
Floods
1-B
1-B
1-B
1-B
3 to 4.5 oz
(dinotefuran)
22
Avaunt (indoxacarb)
11-B2 Bt (Bacillus thuringiensis)
18-A
18-A
15
RATE/A

Delegate WG (spinetoram)
Entrust (spinosad) (organic)
3 to 6 oz
4 to 10 fl oz
season; rates of 2 pt (chemigation) give control; 60-day PHI and 24-hr REI;
Miticides (for southern red mite); Nexter  2 apps/season & success with low rates;
Only one app per season; 90-day PHI (but some 75); DO NOT apply from 10 days
prior to bloom until completion of pollination due to bee toxicity; 24-hr REI.
For spanworm control.
Avoid application within 10 days of bloom onset; 7-day PHI; no more than
five applications per season; 7-day application interval.
Up to 6 apps per year for both of these; Delegate better vs. Entrust (more active
and greater residual); efficacy improved with shorter rinse times; highly toxic to
bees until they are dry (3+ hours) so if in bloom, spray at night.
Blackheaded Fireworm & other fireworms
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Altacor
#Assail 30 SG
#Scorpion or #Venom
Avaunt
Confirm 2F
Intrepid 2F
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Rimon 0.83 EC
Diazinon 50 W, AG500
and AG600
Imidan 70W
Orthene 97, Acephate 97UP
Acephate 90 Prill
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Acephate 90WSP &
90WDG
Chlorpyrifos 4E AG
Lorsban 4E & 75 WG
Lorsban Advanced
Nufos 4E
Hatchet
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#Sevin XLR Plus
Sevin 80S or Sevin 4F
Carbaryl 4L
Delegate WG
Bt or Entrust
10-hour flood (last resort)
Cranberry Fruitworm
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Altacor
#Assail 30 SG
#Scorpion or #Venom
#Belay
Intrepid 2F
√
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

Rimon 0.83 EC
Diazinon 50 W,
AG500
Imidan 70W
Lorsban 4E & 75 WG
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Lorsban Advanced
Nufos 4E
Chlorpyrifos 4E AG
Hatchet
Carbaryl 4L
Bolded products (under the pest sections) are being touted as the best (or better) choices for management.
# = possible handler restrictions; check with your handler before using!
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√
Sevin 80S or Sevin 4F
#Sevin XLR Plus
Delegate WG
Bt or Entrust
fall flood & late-water flood
more
= Restricted use product (need pesticide license)
Bolded products are being touted as the best (or better) choices for management.
Cranberry Weevil
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The threshold is 9 for the summer (July) generation of weevils (per 25 sweeps).
#Belay (summer applications only, i.e. post-bloom; very high bee toxicity)
 Hatchet
Lorsban 4E or 75 WG


Lorsban Advanced & Nufos 4E  Avaunt (Registered for spring populations only—no summer applications)
Chlorpyrifos 4E AG
 Actara, #Scorpion or #Venom
cutworms & Humped Green Fruitworm
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Altacor
Bt
Confirm 2F
Intrepid 2F
Rimon 0.83 EC
(blossomworm only)
Diazinon 50 W
False armyworm and blossomworm are the cutworm
members most often found on Maine cranberry beds.
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Diazinon AG500
Diazinon AG600
Lorsban 4E
Lorsban 75 WG
Lorsban Advanced
Nufos 4E
Chlorpyrifos 4E AG
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Hatchet
Orthene 97, Acephate 97UP
Acephate 90 Prill
Acephate 90WSP &
90WDG
#Sevin XLR Plus
Sevin 4F or 80S
Carbaryl 4L
Delegate WG
Bt or Entrust
10-hour flood (last
resort)
Gypsy Moth caterpillars
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#Assail 30 SG
Bt
Confirm 2F
Intrepid 2F
Rimon 0.83 EC
Orthene 97, Acephate 97UP
Acephate 90 Prill
Acephate 90WSP & 90 WDG
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Altacor, Diazinon, Lorsban, or
Delegate applied for cutworms
or spanworms may also provide
some gypsy moth control
#Sevin XLR Plus
Sevin 80S or 4F
Carbaryl 4L
spanworms (inchworms) – such as Winter Moth
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Altacor
Confirm 2F
Intrepid 2F
Rimon 0.83 EC
#Scorpion / #Venom
Cranberry Tipworm
Movento delayed by EPA
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Lorsban 4E
Lorsban 75 WG
Lorsban Advanced
Nufos 4E
Chlorpyrifos 4E AG
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Hatchet
Orthene 97, Acephate 97UP
Acephate 90 Prill
Acephate 90WSP & 90
WDG
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Pyronyl, Pyganic EC 1.4 & 5.0
Delegate WG
Bt
Entrust
10-hour flood
Careful! Belay is a neonicotinoid with high bee toxicity & a long half life! Use only after bloom.
Rimon: If history of heavy, season-long tipworm, spray 1st application when brand
new shoots (arising from the runners) are abundant at start of season; consider saving
the 3rd application for later in the season (~early August), if needed. Important
Reminder: Rimon is translaminar (not fully systemic); thus, it does not protect new
growth!
Rimon 0.83EC
#Assail 30 SG
#Belay (post-bloom only)
#Scorpion or #Venom
Diazinon AG500 Diazinon AG600
Diazinon 50 W (max of 3 apps per season regardless of target pest)
Cranberry
Girdler
This soil-dwelling (root-feeding) larva generally goes unnoticed unless a large area of brown,
damaged vines is discovered, and larvae have not been noticed or detected / confirmed (when
checking) in Maine cranberries since at least 1996.
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FALL FLOOD: Sept. 27th-Oct. 7th and hold for six days, starting no later than Oct 2nd (Best if weather is cool & cloudy in order to
help minimize potential damage to the vines)
SANDING: (minimum of 1”) suppresses populations by reducing habitat favorability, but eventually populations can rebound.
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NEMATODES (parasitic worms) (also will control black vine & strawberry root weevil – but rarely a problem in Maine)

leafhoppers
[Major outbreak of Blunt-nosed leafhoppers at one site in 2009.]
√ Sevin 80S (Solupak) √ #Sevin XLR Plus
 Actara
√ Sevin 4F
 #Assail 30 SG, #Scorpion or #Venom
I suspect leafhopper and flea beetle populations may be rising with declining use of OP
products. ~Charlie
flea beetles
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#Belay ( 12 oz/A soil drench; summer)
Actara (suppression only)
Delegate WG (suppression only)
Diazinon and Sevin products
#Assail 30 SG, #Scorpion or #Venom
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