Introduction

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• Spring (In the year of seeding): Apply granules and incorporate immediately, in the same operation if possible.
DO NOT delay the first incorporation longer than 24 hours after application. The second incorporation must be
delayed a minimum of 3 days following the first incorporation. When applied to cold soils, wait 14 days before making
second incorporation.
º The second incorporation should be done at an angle to the first incorporation, and at the same depth. If a discer
or air seeder is used for seeding, the seeding operation can be used as the second incorporation.
Green and Yellow Foxtail control in Cereals:
• Liquid formulations: Apply and incorporate in spring just after seeding. Incorporate to a depth of 1 to 1.5 inches (2
to 4 cm) into a bare soil free of crop residues (80 percent black when viewed from above) using diamond or tine type
harrows operated at a speed of 6 mph (9 km/h). Incorporate twice, with the second incorporation at right angles
to the first. The first incorporation should be performed immediately in the same direction of application. Both
incorporations should be done within 24 hours of application. When tank mixing liquid formulations with Avadex BW,
follow the same incorporation procedure.
• Granular formulations: May be applied to standing or pre-worked stubble. Very heavy trash fields should be worked
prior to application to allow product penetration to the soil surface. Incorporate with cultivators or disc implements
only. Perform the first tillage operation within 24 hours of application. Incorporate at a working speed of 5 to 8 mph
(8 to 13 km/hr) and to a depth of 2 to 3 inches (5 to 8 cm). Wait a minimum of 5 days, then incorporate a second time
at right angles to the first. This second incorporation may be delayed until the following spring. Subsequent working
should be no deeper than 2 to 3 inches (5 to 8 cm).
Broadleaf and Grassy Weed Control in other crops:
• Granular formulations are recommended for use in fall or spring as a pre-plant incorporated treatment on broadleaf
crops listed on the product label. The liquid formulations should be used only on soils free of lumps and relatively
free of crop residues (75% black) and are recommended only for spring use. Granular formulations may be applied
to standing or pre-worked stubble. Very heavy crop residues should be worked prior to application to allow product
penetration to the soil surface. DO NOT use liquid or formulations of trifluralin as a pre-plant incorporated treatment
in barley, as severe injury will result. Only the fall applications of Rival 10G, and Bonanza 10G are registered for use as
pre-plant incorporated treatments in barley. For fall application of granular formulations, work the chemical into the
soil between September 1 and freeze-up. Use a discer or field cultivator (vibrating shank-type). Disc implements are
preferred on stubble. Set equipment to cut at 3 to 4 inches (8 to 10 cm) depth. The initial incorporation should be
done within 24 hours of application.
º The second incorporation should be done at right angles to the first. The second incorporation may be delayed
until spring, except when planting barley, flax or lentils; for these crops both incorporations must be done in fall.
Delay the second incorporation 5 days for better weed control. This will allow greater release of the chemical onto
soil particles and assure more even distribution. Fall application of granular trifluralin on flax, lentils or barley is
not recommended on soils prone to erosion, as the 2 fall incorporations necessary in these crops may leave soils
vulnerable to wind or water erosion.
• For spring application of liquid and granular formulations, work the chemical into the soil prior to seeding by setting
the implement at 3 to 4 inches (8 to 10 cm) cutting depth. The first incorporation must be done within 24 hours of
application. The second incorporation must be done at right angles to the first. If incorporating granular trifluralin,
delay the second incorporation for 3 days after the first to achieve better weed control.
Weed Control
Seeding:
Fallow use in the brown soil zone of Saskatchewan:
• Allow soil to warm before seeding to reduce risk of injury to crop. Place seed 1.25 to 2.5 inches (3 to 6 cm) deep. If
spring seedbed preparation is required, set cultivator 2 inches (5 cm) deep. To reduce the risk of wheat injury, use
good quality seed and agronomic practices that will promote good growing conditions. Avoid deep seeding, loose
seedbeds and seeding into cold soils. If extended dry periods were present after a fallow application, a 10 percent
increase in seeding rate is recommended.
How it Works:
Refer to Table 9 on page 48.