Herbicides
201
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Application Information
With
:
Ground equipment.
Water volume
:
Cereals: 40 L/acre minimum. Potatoes: 120 L/acre. 90 - 135 L/acre Corn: pre-emergent:
90 - 135
L/acre; post-emergent 70 - 140 L/acre.
Application Tips
Do not use on sandy or coarse-textured soils, low in organic matter, as crop injury may result. Do not use when crops
are under drought stress. Fruit trees: avoid contact with fruit, foliage and green bark with spray or drift as injury may
result.
How it Works
A systemic herbicide absorbed by leaves and roots. Yellowing (chlorosis), stunting and finally death occurs 10 - 14
days after treatment.
Expected Results
Weeds
:
Yellowing starts 7 - 10 days after application. Effect greatest under excellent growing conditions. Weed
control will vary depending on species, time of application and growing conditions.
Crop
:
A slight yellowing of crop, leaf tip and leaf margin burn may be seen 7 - 10 days after application. Crop
recovers within 14 - 18 days. Crop injury can occur if applied during period of high heat.
Restrictions
Rainfall
:
Heavy rainfall within 2 hours may decrease activity. Pre-emergent treatment requires rainfall or irrigation
for activation. Carrots, corn or potatoes may be severely injured if unusually heavy rains follow application.
Grazing
:
Do not graze or cut for hay; there are not sufficient data available to support such use.
Re-cropping
:
Do not apply post-emergent corn treatment within 60 days of harvest. 25% carryover into next
growing season if rates are 1.8 L/acre or higher
Environmental Precautions
Linuron is toxic to fish and aquatic invertebrates. Do not apply directly to water or to areas where surface water is
present.
Runoff
:
Avoid contamination of surface water through spray drift or surface runoff.
Leaching
:
Use of this material where soils are permeable, particularly where the water table is shallow, may result in
groundwater contamination.
Toxicity
Low acute toxicity. Acute oral LD
50
(
rats) = 3,600 mg/kg. Very toxic to fish. Non-toxic to bees.
Storage
Lorox L/Linuron
:
Store in a heated area. Do not freeze as settling may occur. If frozen, thoroughly mix to
resuspend.
MCPA
Group 4
Formulation
Product
Company
Active ingredient Formulation Container size
MCPA 500 amine (PCP# 20308)
IPCO
500
g/L
Solution
2
x 10 L jugs
MCPA 500 amine (PCP# 9516)
Loveland Products Canada
500
g/L
Solution
2
x 10 L jugs
MCPA 600 amine (PCP# 28384)
Nufarm
600
g/L
Solution
2
x 10 L jugs
MCPA 500 amine (PCP# 29244)
Viterra
500
g/L
Solution
2
x 10 L jugs
Lorox/Linuron (cont’d)