Herbicide label
Willowood Thio UltraMax
Willowood Thio UltraMax (EPA 87290-73) is a Group 15 thiobencarb herbicide labeled for 1 crops. The label lists 2 controlled weeds, plus partial-control, suppression, and partner-control categories.
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Willowood Thio UltraMax label facts
- Product Willowood Thio UltraMax
- EPA Reg. No. 87290-73
- Active ingredient thiobencarb
- MOA group 15
Crops on the Willowood Thio UltraMax label
Willowood Thio UltraMax is labeled for these 1 crops and uses, per the EPA label.
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Willowood Thio UltraMax label
The Willowood Thio UltraMax label names 3 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control2- sprangletop
- umbrella plant, smallflower
Suppression
suppression1- barnyardgrass, common
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Willowood Thio UltraMax rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop.
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Willowood Thio UltraMax FAQ
What weeds does Willowood Thio UltraMax control?
The Willowood Thio UltraMax label names 3 weeds, including sprangletop and smallflower umbrella plant. Control varies by crop, rate, and timing.
What crops is Willowood Thio UltraMax labeled for?
Willowood Thio UltraMax is labeled for 1 crops and uses, including rice.
What is the active ingredient in Willowood Thio UltraMax? Is it a generic?
Willowood Thio UltraMax's active ingredient is thiobencarb (MOA Group 15). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Can I tank-mix Willowood Thio UltraMax?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
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Sources
Last updated 2026-07-14.