Introduction

248
Grazon XC
Company:
Dow AgroSciences
Herbicide Group
4 - picloram & 2,4-D
(Refer to page 44)
Formulation:
97.5 g/L picloram and 360 g/L 2,4-D formulated as a solution.
• Container size - 2 x 10 L and 110 L
Note: Available only through selected retail outlets.
Crops and Staging:
Permanent grass pasture and rangeland. Apply in spring or early summer.
Note: The use of this chemical may result in contamination of groundwater particularly in areas where soils are permeable (e.g.
sandy soil) and/or the depth to the water table is shallow (less than 1.8 metres - See “How it Works” below).
Weeds, Rates and Staging:
Apply at 1.0 L per acre for season long control ONLY:
º Canada thistle
º Common yarrow º Dandelion
Apply at 1.9 L per acre: for control of the above weeds and the following weeds:
º Burdock
º Clovers (red, sweet)
º Dock
º Fleabane
º Goldenrod
º Leafy spurge* † º Plantain
º Ragweed (common)
º Prickly lettuce
º Toadflax* †
º Vetch
º Wild carrot
* For control of leafy spurge and toadflax, use a recommended surfactant (such as Intake Adjuvant or any
non-ion surfactant) at the rate of 250 mL per 100 L of water). If maximum rainfastness is desired increase the rate
to 375 mL per 100 L of water.
†
Research has shown that annual applications may be required for up to 4 years to achieve a high level of
sustained control of leafy spurge.
Apply at 2.5 L per acre for control of the following woody species:
º Aspen
º Birch
º Wild rose
º Balsam poplar Δ º Western snowberry Δ º Willow
Δ
Suppression
Note: Maximum one application per year.
Application Information:
• Water volume*:
º Ground application: 40 to 80 L per acre.
* Use higher water volumes for when foliage is dense. Higher water volumes provide more reliable control.
• Nozzles and Pressure: Use nozzles that will deliver coarse droplets in a uniform pattern. Maximum 30 psi (207kPa)
by ground or air when using conventional flat fan nozzles. Low drift nozzles may require higher pressures for proper
performance. Use nozzles and pressure designed to deliver thorough, even coverage with ASABE coarse droplets.
• Drift of even small amounts of Grazon XC into sensitive plants or areas where sensitive crops may be grown can cause
injury. DO NOT apply under conditions prone to drift (i.e. high winds, dead calm and temperature inversions).
How it Works:
Refer to Table 9 on page 48.
IMPORTANT: Picloram is a very persistent and water-soluble herbicide. Treated soil should not be moved from the