Dextra 500 EC

Manufacturer
UPL
Category
Herbicides
Registered until
2024-06-30
Registration number
69583
Active materials
Links

For the control of Wild oats in Wheat, Triticale, Chickpeas, Barley, Peas, Linseed, Lupins, Canola (Rapeseed), Faba beans and Safflower as per the Directions for Use

GENERAL INSTRUCTIONS
WEED CONTROL
Dextra 500 EC Herbicide normally provides 6 to 8 weeks control of wild oats when the seedbed is moist during the emergence of wild oats. Under very dry soil surface (top 2 cm) conditions, wild oats may not be controlled. Wild oats may emerge between application and complete incorporation by sowing particularly if harrows provide initial incorporation. Dextra 500 EC Herbicide may not control wild oats which have germinated at the time of application and incorporation if the top 2 cm of soil is dry. Dextra 500 EC Herbicide will not control emerged wild oats.

CROP SAFETY
Reduced emergence of cereals and linseed may occur if seed is placed in treated soil layer. Do not plant cereal crops at greater than 5 to 7 cm. Over spraying of headlands or corners may result in crop damage. On heavy clay soils, crop thinning may occur in wheel tracks. Environmental conditions which adversely affect emergence or early crop growth, may predispose crops to injury, particularly where tank mixes with other pre-emergence herbicides are used.
Read and follow label directions, restraints, plantback periods and safety directions for tank mix products.

SOIL PERSISTENCE AND FOLLOWING CROPS
Under prolonged and extremely dry conditions Dextra 500 EC Herbicide may persist for several months. Damage to field oats and sorghum may occur.

MIXING
Dextra 500 EC Herbicide is an oily concentrate that mixes readily with water. Add the required amount of Dextra 500 EC Herbicide to half the required amount of water in the spray tank. Mix thoroughly and add the remaining water.

APPLICATION
Apply to soil in friable condition so that uniform incorporation of the product can be achieved to a depth of 2 to 4 cm. The soil should be free of large clods (>75 mm) and should not have crop or weed residue at a level which will interfere with the free flow of soil through planting equipment providing full soil disturbance. Emerged wild oats should be controlled either by prior cultivation/application of a knockdown herbicide or by the tank mixing of a knockdown herbicide with Dextra 500 EC Herbicide.
Apply Dextra 500 EC Herbicide by ground sprayer in 30 to 100 litres of water per hectare using a boom spray fitted with flat fan nozzles. Use spraying pressure of approximately 200240kPa. Avoid application under strong and/or gusty wind conditions. DO NOT apply by aircraft.

INCORPORATION
Two-pass incorporation provides superior weed control to single pass incorporation on heavier textured soils.
(i) Dextra 500 EC Herbicide may be incorporated initially in a suitable cultivated seedbed with either heavy 5 row harrows e.g. Phoenix harrow, or tyned cultivator. Final incorporation with a combine or airseeder/cultivator is essential to provide for maximum weed control.
Heavy tyned harrows or a rotary harrow should trail the planter or follow as a separate operation at an angle to the planter to complete incorporation. Ensure that the soil surface is left free of pronounced ridging.
(ii)On soils in friable condition, Dextra 500 EC Herbicide may be incorporated with the planting operation only up to 24 hours following application onto a dry soil surface or up to 6 hours on moist surface soil. If Dextra 500 EC Herbicide has been sprayed on dry soil, and it rains before incorporation is planned, the product must be incorporated within 6 hours to retain its herbicide effectiveness. Planting should be carried out with a combine or airseeder/cultivator that provides full soil disturbance. Heavy tyned harrows or a rotary harrow should trail the planter or follow as a separate operation to complete incorporation. Ensure that the soil surface is free of pronounced ridging.
DO NOT operate incorporation equipment at greater than 5 to 7 cm depth.
Where soil is wet at planting, poor incorporation may result. For shallow-sown legume and oil-seed crops, complete incorporation by cultivation to a depth of 5 cm must be undertaken before planting.
Note that point size should be matched to tyne spacing to avoid uneven incorporation. For example, a wideline seeder with 15 cm tyne spacing should be fitted with unworn 15 cm points. A combine with 9 cm spacing should be fitted with an evenly worn sent of 10 cm points. Sweeps or other low profile points may not provide satisfactory incorporation.

COMPATIBILITY
Dextra 500 EC Herbicide is compatible with: Chlorsulfuron, Triasulfuron, Trifluralin and Glyphosate.

Registered for culturesRate
Winter wheat1.6 l
Spring wheat1.6 l
Winter barley1.6 l
Spring barley1.6 l
Winter triticale1.6 l
Spring triticale1.6 l
Chickpeas1.6 l
Beans1.6 l
Lupines1.6 l
Peas1.6 l
Winter flax1.6 l
Spring flax1.6 l
Canola1.6 l
Safflowers1.6 l