For early post-emergent control of crabgrass and preemergent control of over 40 grassy and broadleaf weeds in established lawns, golf courses, field-grown nurseries, landscape ornamentals and more.
For control of listed annual grasses and broadleaf weeds in the following sites:
Quali-Pro Dithiopyr 40 WSB only controls crabgrass up to initiation of tillering, that is, when seedlings are first visible in established turfgrasses. Quali- Pro Dithiopyr 40 WSB will not control emerged weeds. For optimum effectiveness, apply Quali-Pro Dithiopyr 40 WSB prior to initiation of tillering, and make all other applications before germination of target weeds.
Quali-Pro Dithiopyr 40 WSB must be activated to be effective. Activation is achieved by watering-in from rainfall or irrigation (1/2 inch or more). Time applications to ensure that activation occurs before the tillering stage of crabgrass development or prior to germination of all other weeds.
Restrictions: New York without a commercial applicator license.
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Apply Quali-Pro Dithiopyr 40 WSB in early spring or summer for best results.
•Long grasses should have 7.5oz of Dithiopyr per acre applied for total pre-emergent weed control.
Short length grasses need applications of 15oz of Dithiopyr per acre for pre-emergent control of weeds
Mix needed rate of Dithiopyr with sufficient water to get even coverage. After application it is necessary to irrigate 1/2 inch of water for best results.