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Sample questions
What type of herbicide application is Keystone LA NXT designed for?
- Preemergence
- Postemergence
- Soil sterilization
- Foliar fungicide
Show answer
The product description identifies Keystone LA NXT as a preemergence herbicide.🔗 Source
Which of the following is a target pest controlled by Keystone LA NXT?
- Pigweed
- Termites
- Aphids
- Ants
Show answer
The label states the product is effective against broadleaf species like pigweed and ragweed.🔗 Source
In which of the following locations is the use of Keystone LA NXT prohibited?
- Nassau and Suffolk Counties of New York
- All corn production sites
- Only in indoor environments
- Only in areas with high organic matter
Show answer
The restrictions state: 'Do not use in Nassau and Suffolk Counties of New York.'🔗 Source
According to the label, what is the maximum weed height allowed at the time of application?
- 1.5 inches
- 2.0 inches
- 3.0 inches
- 0.5 inches
Show answer
The restrictions state: 'Do not apply if weeds are greater than 1.5 inches tall at time of application.'🔗 Source
When determining the application rate for Keystone LA NXT, which two factors must be carefully selected to prevent crop injury?
- Soil texture and organic matter content
- Wind speed and humidity
- Crop age and plant height
- Rainfall amount and temperature
Show answer
Users must select rates based on soil texture and organic matter content to prevent crop injury.🔗 Source
Which of these is a required piece of Personal Protective Equipment (PPE) for handling Keystone LA NXT?
- Chemical-resistant gloves
- Respirator mask
- Face shield only
- Rubber apron
Show answer
The PPE section requires chemical-resistant gloves (barrier laminate, nitrile, neoprene, or viton).🔗 Source
Under which weather condition should application be avoided?
- Wind speeds exceeding 10 mph
- Temperatures below 40 degrees
- High humidity levels
- Cloudy skies
Show answer
The label instructs to avoid application during high wind speeds exceeding 10 mph.🔗 Source
What is the required action before mixing Keystone LA NXT with tank mixes like Balance Pro or Hornet WDG?
- Always perform a compatibility test first
- Dilute with water for 24 hours
- Apply to soil before mixing
- Check if weeds are 2 inches tall
Show answer
The mixing notes state to always perform a compatibility test first when using certain tank mixes.🔗 Source
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