Herbicides
193
• 
Safety - page 25 • First aid - page 33 • Resistance management - page 41
Krovar 1
Group 5, 7
Formulation
Product
Company
Active ingredient
Formulation
Container size
Krovar 1 (PCP# 22964)
E.I. duPont Canada
Bromacil: 40% + diuron: 40% Dry flowable
2
kg, 25 kg
Crops
Non-cropland areas - railroad, pipeline, utility and highway rights-of-way, storage areas, and industrial plant sites.
Weeds, Rates and Staging
Most annual and perennial grasses and broadleaved weeds.
Crop
Rate
Timing and specific comments
Non-crop areas
Initial Treatment
Sandy or sandy loam: 5.5 kg/acre
Clay or high organic soils: 7.3 kg/acre
Re-treatment: 2.75 - 3.6 kg/acre
Apply just before or during the period of active
growth of weeds.
Observe a minimum interval of 90 days between
the first application and re-treatment.
A maximum of 2 applications per season is
permitted to a maximum seasonal use rate of
13.5
kg/acre per year.
Small areas
180
g per 100 m
-2
or 7.3 kg/acre. Apply in a minimum water
volume of 2 L per 100 g
Registered Tank Mixes
Tank-mix partner
Krovar I plus tank mix partner rate
Additional weeds controlled and comments
Telar
Krovar I: 5.5 - 7.3 kg/acre +
Telar: 48 g/acre +
Non-ionic surfactant: 1% v/v
Weeds controlled by Telar
Application Information
With
:
Boom spray, handgun, backpack or sprinkling can. Do not apply by air.
Water volume
:
Minimum of 20 L/ kg of Krovar 1. Use enough water to uniformly cover area to be treated.
Application Tips
During spraying, Krovar 1 must be kept in suspension at all times by continuous agitation. Sufficient moisture from
rainfall or artificial means is necessary after treatment to carry the chemical into the root zone of the weeds. If dense
growth is present, results will be improved if vegetation is removed before treatment. Do not apply when ground is
frozen. Do not treat ditches, wellheads, bridge approaches. Do not treat sites that are adjacent to and surrounding
water supply reservoirs, supply streams, lakes and ponds.
How it Works
Krovar 1 is readily absorbed through the roots, leaves and stems.
Expected Results
Plants become chlorotic and then die. The degree of control and duration of effect will vary with the amount of
chemical applied, soil type, rainfall and other factors. Poor results occur if weeds are too mature or if insufficient
rainfall.
Restrictions
Rainfall
:
Rainfall needed to move the chemical to the root zone.
Grazing
:
Do not graze the treated crops or cut for hay; sufficient data are not available to support such use.