Introduction

364
Effects of Growing Conditions:
Application to crops stressed by extreme weather conditions such as frost, hail, saturated soils or drought as well as low
fertility, insect damage or disease pressure may result in crop injury and/or reduce weed control.
Crop and weeds that are growing rapidly produce optimum activity. The optimum temperature range for the best activity is
between 12 to 24 o C. Activity will be reduced below 8 o C and above 27 o C.
Tank Mixes:
Herbicides:
• In wheat (spring and durum) only:
º 2,4-D Ester (up to 226 g ae per acre)
º MCPA Ester (up to 452 mL of a 500 g/L form or 377 mL of a 600 g/L form per acre)
Fungicides: None registered.
Fertilizers: None registered.
Insecticides: None registered.
Note: The above mixes are those listed on the Signal F and Boost labels only.
Adding ingredients in the correct order is critical for optimum performance. Check labels of both products to be mixed for
directions. General guidelines can be found on page 8.
Restrictions:
• Rainfall: Within 4 hours will reduce control.
• Re-entry Interval: DO NOT enter treated fields for 12 hours.
• Pre-harvest Interval: Leave 60 days between application and harvest.
• Grazing Restrictions: DO NOT graze or feed treated crop to livestock within 3 days of application.
• Re-cropping Interval: Barley, canola, field peas, flax, forage grasses, lentils, mustard, oats, rye and registered crops
may be seeded the season after application.
• Aerial Application: DO NOT apply by aircraft.
• Storage: Store in a cool, dry place in original container. Shake well before using. If frozen, warm liquid component
gradually to 10 degrees C and shake well to reconstitute component before use.
• Buffer Zones:
Crop
Buffer Zones (metres † ) Required for the Protection of:
Aquatic Habitats
Terrestrial habitat
Ground only 15 15
See the key to product pages on page 35 for an explanation of the different habitats.
* Buffer zones can be reduced by 70% when using shrouds and by 30% when using cones mounted less than
12 inches from the crop canopy.
†
Distance measured as metres from the downwind edge of the spray boom to sensitive habitat.
Tank Cleaning:
Thifensulfuron/tribenuron can cause severe injury to sensitive crops at very low concentrations. Sprayers used to spray
Thifensulfuron/tribenuron should be drained and flushed out immediately after use.
Refer to ‘Method A’ in the general section on sprayer cleaning on page 9 and 10. The addition of detergent will enhance
cleanout.
Hazard Rating:
Signal F:
Danger – Skin irritant
Caution Eye irritant