Herbicides
113
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Application Information
Casoron can be spread on the soil surface by hand, using small hand-held or backpack equipment, or by larger and
tractor-mounted spreaders. Do not apply by air.
Application Tips
Do not apply until 4 weeks after transplanting any crop. Casoron should be applied when the soil temperature is
cool. Air temperatures should be less than 15°C. Applying at higher temperatures may reduce its herbicidal activity.
Casoron will stay in the upper 10 cm of soil and will not harm established plants with a well developed root system
below this herbicide barrier. Do not use in seedbeds, transplant, or cutting beds or in greenhouses. Do not apply until
6
months after rooting of cuttings in the field.
How it Works
Casoron inhibits cell growth at the growing points or meristematic tissues of the plant. Weed germination and growth
initiation are strongly affected. Water is necessary to move the compound into the soil. Snowmelt or rain after the
application moves Casoron into the soil. Casoron inhibits germination but acts primarily on growing points and root
tips.
Expected Results
Growth of emerging shoots of some perennials controlled. Tolerant crops are unaffected if roots do not come in
contact with Casoron in the upper layers of the soil.
Restrictions:
Grazing
:
Do not graze livestock in treated areas or use treated crops for forage or fodder; sufficient data are not
available to support such use.
Horticultural/Nursery Use
:
Do not enter or allow worker entry into treated areas within 24 hours of application.
Re-cropping
:
Do not plant vegetables or other sensitive crops the year following soil treatment.
Environmental Precautions
Casaron is toxic to aquatic organisms and slightly toxic to fish. Avoid contamination of aquatic systems during
application.
Runoff
:
Use a buffer strip of untreated vegetation between the treated area and the edge of water bodies to reduce
risk of contamination.
Leaching
:
Warning. The use of this chemical may result in contamination of groundwater, particularly in areas where
soils are permeable and/or the water table is shallow.
Toxicity
Low oral toxicity. Acute oral LD
50
(
rat) = 2,000 mg/kg.
Storage
Dry storage - not affected by frost.
CleanStart
Group 9, 14
Formulation
Product
Company
Active ingredient
Formulation
Container size
Aim EC (PCP# 28573)
Nufarm Agriculture
Carfentrazone-ethyl: 240 g/L Emulsifiable concentrate
1
x 600 mL or
4
x 3.38 L
Casoron G-4 (cont’d)