Spike 20P Herbicide

When are herbicidal symptoms most likely to appear most rapidly?

• When applied during a period of heavy frost
• When applied just before seasonal rainfall ✓
• When applied during peak summer heat
• When applied immediately following a flood

Answer: The label states herbicidal symptoms appear most rapidly when applied just before seasonal rainfall.

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Which of the following is a restriction regarding groundwater protection?

• Do not apply within areas identified by state or local authorities as protected groundwater recharge zones ✓
• Do not apply within 50 feet of any well
• Do not apply if the water table is within 10 feet of the surface
• Do not apply if the soil is saturated with water

Answer: The label states: Do not apply Spike 20P within areas identified by state or local authorities as protected groundwater recharge zones.

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Under what weather condition do treatments with Spike 20P become effective?

• Immediately upon application regardless of weather
• After sufficient rainfall has occurred to move the active ingredient into the root zone ✓
• Only during periods of high humidity and no rain
• Only after a period of extreme drought

Answer: Treatments become effective after sufficient rainfall has occurred to move the active ingredient into the root zone.

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What types of target pests is Spike 20P Herbicide designed to control?

• Woody plants (trees, shrubs, and vines) ✓
• Grassy weeds and annual broadleaf plants
• Invasive insects and fungal pathogens
• Moss and algae in shaded areas

Answer: The label states the target pests are woody plants including trees, shrubs, and vines.

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Based on the provided label facts, which information is NOT specified?

• Target pests
• Application method
• Personal Protective Equipment (PPE) requirements ✓
• Weather-related effectiveness

Answer: The provided label facts do not list any specific PPE requirements.

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In which of the following soil types is it prohibited to apply Spike 20P?

• Sandy loam soils
• Clay-heavy soils
• High shrink/swell soils (vertisols) ✓
• Silt loam soils

Answer: The label explicitly states: Do not apply Spike 20P to high shrink/swell soils (vertisols) which develop deep cracks upon drying.

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Where is it restricted to NOT apply Spike 20P regarding local geography?

• Areas adjacent to sinkholes or depressions lacking external drainage in karst topography ✓
• Areas with high wind speeds exceeding 10 mph
• Areas with heavy shade and low sunlight
• Areas with high salt content in the soil

Answer: The label prohibits application in areas adjacent to sinkholes or depressions lacking external drainage within karst topography.

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According to the label, how should Spike 20P be applied to the site?

• As a foliar spray to leaves
• As a surface applied soil-active product ✓
• As a deep root injection
• As a soil drench via irrigation systems

Answer: The label notes that Spike 20P is a surface applied soil-active product.

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