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Questions and Answers
What is the main function of adjuvants in herbicide formulations?
What is the main function of adjuvants in herbicide formulations?
- Control the target weed
- Improve ease of application and mixing (correct)
- Enhance herbicide phytotoxicity
- Increase inert ingredient concentration
Which is NOT a type of dry herbicide formulation?
Which is NOT a type of dry herbicide formulation?
- Granule
- Wettable powder
- Water-Dispersible Granules (WDG)
- Soluble concentrate (correct)
What is the main role of activator adjuvants in herbicide formulations?
What is the main role of activator adjuvants in herbicide formulations?
- Increase inert ingredient concentration
- Enhance product efficacy (correct)
- Extend the shelf life of the herbicide
- Act as a diluent for the active ingredient
What defines an inert ingredient in herbicide formulations?
What defines an inert ingredient in herbicide formulations?
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Which is a type of liquid herbicide formulation?
Which is a type of liquid herbicide formulation?
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Study Notes
- Herbicides Formulation: a mixture of active ingredient (a.i.) and inert ingredient
- Active ingredient: chemical causing phytotoxicity and controlling target weeds
- Inert ingredient: additives, diluents, extenders, or adjuvants with no herbicidal activity
- Herbicide formulation: available in dry (granule, pallet, etc.) and liquid (concentrates, emulsifiable, oil soluble, ready-to-use) forms
- AGR 3102: Principles of Weed Science, Week 9 topic: Herbicides - Adjuvants
- Adjuvants: compounds added to herbicide formulations or tank mixes to enhance application, effectiveness, or stability
- Two main functions: 1) improve ease of application, mixing, and handling 2) enhance product efficacy
- Two basic groups: 1) Activator adjuvants: increase herbicide deposition, adhesion, retention, penetration, and absorption into weeds.
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