UNIVERSITY OF MASSSACHUSETTS/Amherst
CRANBERRY STATION
EAST WAREHAM, MA 02538
2009
A.L. Averill and M.M. Sylvia
RATE
INTREPID
methoxyfenozide
10-16 oz/A
64 oz/A/season
Use
spreader/binder
CONFIRM
tebufenozide
16 oz/A
64 oz/A/season
Use
spreader/binder
ASSAIL 30SG
acetamiprid
neonicotinoid
PRIMARY
TARGET INSECTS ACTIVITY
MODE OF
ACTION
Sparganothis fruitworm
blackheaded fireworm
false armyworm
brown/green spanworm
cranberry blossomworm
gypsy moth, winter moth
Ingestion
Insect growth
regulator
Sparganothis fruitworm
blackheaded fireworm
false armyworm
brown/green spanworm
blossomworm
gypsy moth, winter moth
Ingestion
Insect growth
regulator
Ingestion
Neurotoxic
Systemic (taken
up by plant and
transported to
growing portions)
Nicotinic
acetylcholine
receptor
agonist/
antagonist
4.0-6.9 oz/app
blackheaded fireworm
13.8 oz/A/season cranberry fruitworm
Sparganothis fruitworm
gypsy moth
REDUCED-RISK
AND ORGANOPHOSPHATE
REPLACEMENT INSECTICIDES
IN CRANBERRY
RULES & METHODS
TO MAXIMIZE FIELD EFFICACY
Reduced Risk/Organophosphate replacement
--No Zone II area applications allowed
--Must target small caterpillars, sweep in spring, treat ASAP
Ecdysone
--Multiple applications are essential, especially in years of extended flight
agonists/molting --Wait several days to assess control; long residual
disruptor
--In June/July, when using pheromone traps to time treatment of summer
generation, use different rules (compared to Diazinon, e.g.)
(fireworm hatches faster than Sparganothis) (see below):
--For blackheaded fireworm, set pheromone traps to determine ONSET of
flight, i.e. capture of several moths/trap/night and treat 2 weeks later
to hit larvae as they are hatching; treat again 10 days later.
--For Sparganothis, set pheromone traps to determine ONSET of flight, i.e.
capture of several moths/trap/night and treat ca 3 weeks later to hit
larvae as they are hatching; treat again 10-14 days later.
Reduced risk
--Confirm can be used in Zone II areas
--Confirm is less active than Intrepid; choose Intrepid if possible
Ecdysone
--Rinse time under 6 minutes, even less if possible
agonists/molting --Wait several days to assess control; follow Intrepid notes for timing
disruptor
Reduced Risk/Organophosphate replacement
--Rinse time under 8 minutes
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NAME
active ingredient
ACTARA
thiamethoxam
RATE
2-4 oz/A
12 oz/A/season
neonicotinoid
PRIMARY
TARGET INSECTS ACTIVITY
cranberry weevil;
both spring (May/June)
and summer (July/Aug)
populations
flea beetle suppression
AVAUNT
indoxacarb
6 oz/app
24 oz/season
cranberry weevil:
spring population only
(May/June)
Systemic (taken Neurotoxic
up by plant and
transported to
Nicotinic
growing portions) acetylcholine
receptor
Ingestion
agonist/
antagonist
Translaminar
Ingestion
3-6 oz
19.5 oz/A/season Sparganothis fruitworm,
blackheaded fireworm,
6-10 oz/A
false armyworm,
SPINTOR
29 oz/A/season
brown/green spanworm,
spinosad
blossomworm,
1.25-3 oz/A
gypsy moth, winter moth
ENTRUST
9 oz/A/season
spinosad
cranberry fruitworm +
(organic option)
flea beetle suppression
(Delegate only)
ADMIRE Pro
ADMIRE 2F
ALIAS 2F
imidacloprid
neonicotinoid
7-14 oz/A
14 oz/A/season
16-32 oz/A
32 oz/A/season
Soil insects: striped
colaspis, oriental beetle
RULES & METHODS
TO MAXIMIZE FIELD EFFICACY
Organophosphate replacement
--Must report usage in Zone II, cannot use in Zone II in spring
--Hold water 5 days
--Not broad spectrum – will not hit caterpillars! such as blackheaded
fireworm, Sparganothis, etc.
-- Rinse time under 8 minutes best; lower rates work well
Limited
Contact
Reduced risk/Organophosphate replacement
--Rinse time under 8 minutes
Voltage--Hold water 1 day, no flow through bogs
dependent
--Only 2 applications allowed targeting spring weevil,
sodium channel
but 4 applications are allowed for other insects
blocker
Contact
Neurotoxic
Ingestion
Nicotinic
acetylcholine
receptor
agonists
blackheaded fireworm
Spanworm
DELEGATE
spinetoram
MODE OF
ACTION
Translaminar
Neurotoxic
Systemic (taken Neurotoxic
up by plant and
transported to
Nicotinic
growing portions) acetylcholine
receptor
Ingestion
agonist/
antagonist
Limited
Contact and
Translaminar
Reduced risk
--Delegate is more active and has greater residual than SpinTor
--Rinse time under 6 minutes, less if possible; good coverage is essential
--Wait 2-3 days to assess control
--If caterpillar pests have reached a larger size, Delegate is better choice
than Intrepid/Confirm
Organophosphate replacement
--Apply as drench; irrigate (0.1-0.3”) right after application
--Very long residual in soil
--Target eggs as they hatch; best control against very small larvae
--better to go on early instead of late
-- Identify pest and target in specific manner:
Striped colaspis: June--monitor adult beetles in day sweeps and treat soil
(target hatching larvae in soil) about a week after peak captures
Oriental beetle: June/July--monitor adult beetles with pheromone traps
and treat soil 2.5-3 weeks after peak captures
--Do not use on saturated soil
--Avoid sprays immediately pre-bloom or while bees are foraging
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