Herbicides
199
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Forage grasses
:
For control of the weeds listed on the label plus alsike clover, apply Lontrel at the rate of 170 - 336
mL/acre in 45 - 90 L/acre of water. Make one application per season by ground sprayer. For seedling grasses, apply
at the 3 leaf stage and beyond. For established grasses, apply in the fall after harvest or early spring.
How it Works
Clopyralid is a systemic, hormone-type herbicide. It is absorbed by leaf and stem surfaces and is readily translocated.
Maximum efficacy results from foliar application to young actively growing plants.
Expected Results
Herbicide symptoms on affected plants include swollen growing points and roots, cupping of leaves, twisted and
distorted stems and leaves. Plants will gradually stop growing and change colour, first to dark green and then to
yellow before turning brown as they die. Maximum effectiveness results from foliar applications to young actively
growing plants. Death of weeds may not occur until 14 - 21 days after application. With the lowest rate of Lontrel on
Canada thistle, some regrowth may occur by the end of the season, but this will not interfere with harvesting of the
crop.
Restrictions
Rainfall
:
A rain-free period of 4 - 6 hours after application is required.
Grazing
:
There are no restrictions on the grazing of crops or forages treated with Lontrel 360. If necessary, treated
areas may be grazed immediately following application.
Pre-harvest Interval
:
Sugar beets - Do not apply within 90 days of harvest. Strawberry - P.H.I. = 200 days.
Re-cropping
:
Fields treated with Lontrel can be seeded to barley, canola, forage grasses, flax, mustard, oats, rye,
wheat or summerfallowed. Do not seed to crops other than those listed above for at least one year after treatment.
Use of straw and manure from treated crops
:
Lontrel residues in straw may be harmful to susceptible plants. Do
not use straw from treated crops for composting or mulching on susceptible broadleaf crops. Manure can be spread
on fields that will be seeded to barley, flax, oats, canola (rapeseed), rye or wheat. Do not grow susceptible crops
such as peas, beans, lentils, potatoes, sunflowers or other sensitive crops on land that has been mulched with straw
containing Lontrel 360 residues within the last 12 months.
Environmental Precautions
Small amounts of drift may damage sensitive plants such as legumes.
Toxicity
Cloypralid is practically non-toxic to aquatic organisms, including fish on an acute basis. Cloypralid has a very low
acute mammalian toxicity. Acute oral LC
50
(
rats) = >2,000 mg/kg. It is practically non-toxic to bees.
Storage
Store in heated storage away from open flames or sparks. If frozen, warm slowly to room temperature and mix
thoroughly before use.
Lorox/Linuron
Group 7
Formulation
Product
Company
Active ingredient
Formulation
Container size
Lorox L (PCP# 16279)
Tessenderlo Kerley Inc.
Linuron: 480 g/L
Liquid
10
L
Lorox DF (PCP# 20193)
Linuron: 50%
Dry flowable
5, 10,
kg jug
Linuron 400 (PCP# 15544)
Loveland Products
Canada
Linuron:400 g/L
Liquid
10
L
Lontrel 360 (cont’d)