Insecticides
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Safety - page 25 • First aid - page 33 • Resistance management - page 41
When Used
Aphids
:
Use the higher rate when conditions favour rapidly increasing aphid populations. Repeat sprays at 7 day
intervals depending on the presence of significant populations as determined by local monitoring.
Cabbage seedpod weevil
:
Apply at the bud to early flowering stage of crop development. Timing of applications
should also be based on the presence of significant populations of adults, as determined by local monitoring.
Application prior to adult migration into the field will not be effective.
Colorado potato beetle
:
Apply when insects or damage appears. Use the high rate once larvae are past the second
instar. Timing of applications should be based on the presence of vulnerable pest developmental stages and
significant populations as determined by local monitoring. Colorado potato beetle susceptibility to pyrethroid
insecticides should be confirmed using an appropriate assay.
Crucifer flea beetle
:
To prevent migration of overwintering flea beetle adults throughout the field, ground spray a 15
m strip around the field at the first sign of flea beetle feeding.
Cutworm
:
Applications should be made under moist conditions in the evening or night when cutworm activity is
highest. Do not disturb the soil surface for 5 days after treatment.
Grasshoppers
:
Best results on young, non-flying grasshoppers (up to 3rd nymphal stage, up to 1 cm in length) or
when insect numbers are low. Use higher rate when grasshopper are larger, up to but not including winged adults (up
to 2.5 cm in length) or when insect numbers are high. If insect migration into a field is severe, apply spray to a 15 m
strip around the field.
Application Information
How to Apply
:
Ground and aerial application. See above table for details.
Water Volume
:
Ground: 40 – 80 L/acre. Aerial: 4 - 16 L/acre.
Application Tips
Control of some insects species with synthetic pyrethroid insecticides decreases as temperature rises. For best results,
apply Matador 120EC or Silencer 120EC during early morning before temperature rise and during the evening, past
the heat of the day. Temperature must be warm enough for insects to be active.
How it Works
Cyhalothrin-lambda is a photostable, synthetic pyrethroid insecticide. It is a fast acting stomach and contact
insecticide. It has no fumigant or systemic activity. Best results will be obtained when applied during early
developmental stages of pests as determined by regular monitoring.
Restrictions
Rainfall
:
Avoid application when heavy rain is forecast.
Grazing
:
Do not graze or feed livestock treated forage or cut green crop for hay or silage.
Pre-harvest Intervals
:
See above table.
Re-entry
:
Do not re-enter treated areas until 24 hours after treatment. If early re-entry into treated areas is required,
workers must wear long pants, long-sleeved shirts, chemical resistant gloves, boots and a hat.
Environmental Precautions
Toxic to aquatic organisms and fish. Do not apply within 15 m of environmentally sensitive areas using ground
equipment and 100 m of environmentally sensitive areas when applying by air.
Runoff
:
To reduce runoff from treated areas into aquatic habitats, avoid application to areas with a moderate to steep
slope, compacted soil or clay.
Toxicity
High acute mammalian toxicity. Acute oral LD
50
(
female rats) Matador 120/Silencer 120 = 278 mg/kg; technical = 56
mg/kg. Skin and eye irritant. Toxic to bees.
Storage
Heated storage not required. Storage below 0°C will not impair the effectiveness of Matador 120 EC or
Silencer 120 EC; however, following such storage, agitate well before use. Store in a cool, well ventilated area
away from food or feed.
Matador 120EC/Silencer 120EC (cont’d)