Orondis Ultra (Premix)

What is the mechanism of action for Orondis Ultra?

• It inhibits an oxysterol-binding protein (OSBP) homologue to disrupt cell wall biosynthesis. ✓
• It disrupts cellular respiration by targeting the mitochondrial membrane.
• It prevents the formation of ergosterol in the cell membrane.
• It inhibits the synthesis of chitin in the fungal cell wall.

Answer: The product works by inhibiting an oxysterol-binding protein (OSBP) homologue, which disrupts cell wall biosynthesis.

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Which statement regarding application timing and environmental protection is correct?

• Avoid application if significant rainfall is forecast within 48 hours. ✓
• Avoid application if significant rainfall is forecast within 24 hours.
• Only apply during high wind conditions to increase coverage.
• Apply only when surface water is present to ensure dilution.

Answer: Avoid application if significant rainfall is forecast to occur within 48 hours to reduce runoff risk.

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According to the label, how should Orondis Ultra be used to manage resistance?

• Apply at maximum rates to ensure complete eradication.
• Incorporate it into a regularly scheduled protective spray program and rotate it with fungicides having different modes of action. ✓
• Apply only when disease pressure is at its highest level.
• Use only via chemigation to ensure systemic coverage.

Answer: For effective resistance management, users should incorporate it into a regularly scheduled protective spray program and rotate it with fungicides having different modes of action.

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Which of the following is an acceptable glove material for handling this product according to the label?

• Latex rubber
• Natural rubber
• Nitrile rubber (≥ 14 mils) ✓
• Polyethylene

Answer: Handling requires specific PPE, including... chemical-resistant gloves (butyl rubber ≥ 14 mils, nitrile rubber ≥ 14 mils, neoprene rubber ≥ 14 mils, or polyvinyl chloride [PVC], or Viton® ≥ 14 mils).

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Which of the following is a restriction regarding water protection for this product?

• Do not apply to crops near any water source.
• Do not contaminate water when disposing of equipment washwater or rinsate. ✓
• Do not use irrigation systems (chemigation) near water bodies.
• Only apply to crops if they are at least 50 feet from water.

Answer: Do not contaminate water when disposing of equipment washwater or rinsate.

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Based on the label, which application method is NOT listed for Orondis Ultra?

• Foliar spray
• Aerial application
• Chemigation
• Soil drenching ✓

Answer: It is applied via foliar spray (including aerial application) or through irrigation systems (chemigation).

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When mixing Orondis Ultra alone, what is the correct order of operations?

• Add Orondis Ultra to a full tank of water and shake thoroughly.
• Add Orondis Ultra to 10-20% of the required water, then add the remaining water. ✓
• Mix Orondis Ultra with water in a separate container before adding it to the tank.
• Add the required amount of water, then add Orondis Ultra, then add more water.

Answer: When using alone, add 10-20% of the required amount of water to the tank, add Orondis Ultra, continue adding remaining water, then begin application once thoroughly mixed.

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What is the required Re-entry Interval (REI) for this product?

• 24 hours
• 48 hours
• 4 hours ✓
• 12 hours

Answer: REI: 4

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