Insecticides
400
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Environmental Precautions
Chlorpyrifos is toxic to birds and wildlife and extremely toxic to fish and aquatic organisms. Do not apply directly to
water. Drift and runoff from treated areas may be hazardous to aquatic organisms in adjacent aquatic sites.
Runoff
:
To reduce runoff from treated areas into aquatic habitats, consider the characteristics and conditions of the
site before treatment.
Leaching
:
Binds to organic matter in soil. As a result it is less likely to leach in soils with adequate organic matter
levels.
Toxicity
High acute mammalian toxicity. Acute oral LD
50
(
rats) formulation = 440 - 900 mg/kg. Toxic to bees exposed to
direct applications, drift, or residue on blooming plants.
Storage
Keep away from heat, sparks and open flame. Do not store above 38
°
C for extended periods of time.
Malathion
Group 1B
Formulation
Product
Company
Active
ingredient
Formulation
Container size
Malathion 500 E (PCP# 4709)
UAP Canada
Malathion: 500
g/L
Emulsifiable
concentrate
10
L jug
Malathion 500 EC (PCP# 5821)
IPCO
10
L jug
Malathion 85 E (PCP# 8372)
UAP Canada
Malathion: 85 %
10
L jug
Malathion grain protector dust
(
PCP# 15896)
UAP Canada
Malathion: 2 % Dust
20
kg bag
Malathion grain protector dust
(
PCP# 17222)
IPCO
Malathion: 2% Dust
20
kg bag
Crops, Insects Controlled and Rates
Crops
Insects controlled
Rates per acre
Malathion 500 Malathion 85 E
Alfalfa
Alfalfa weevil larvae, aphids, grasshoppers, leafhoppers, lygus bugs,
spider mites, spittlebugs (adult)
0.91 - 1.1
L
0.45 - 0.54
L
Alfalfa blotch leafminer
1.1
L
0.54
L
Flax
Grasshoppers
0.45 - 0.71
L
0.22 - 0.34
L
Barley, oats, rye, wheat
Armyworms, English grain aphids, grasshoppers, greenbugs, winter
grain mites
0.44 -1.01
L
0.45 - 0.54
L
Cereal leaf beetle
0.89
L
Beans
Aphids, leafhoppers, Mexican bean beetle, spider mites
0.61 - 1.11
L
0.3 - 0.44
L
Canary grass (seed
production)
Aphids
0.56
L
0.27
L
Canola, mustard
Flea beetles, grasshoppers
0.45 - 0.71
L
0.22 - 0.34
L
Diamondback moth (larvae)
0.22 - 0.34
L
0.11 - 0.17
L
Clover (500 E only)
Aphids, grasshoppers, leafhoppers, spider mites, spittle bug
0.45 - 0.54
L
Clover (sweet)
Sweet clover weevil
0.61 - 1.01
L
0.44 - 0.54
L
Lorsban/Pyrinex/Nufos/Citadel (cont’d)