30 Questions
What is the primary requirement for a chemical to be used as a pesticide?
It should be stable and tenacious
What is the main concern with applying chemical pesticides over a large area?
It may adversely affect the biological equilibrium of the area
What is the key requirement for pesticides that are mixed and applied simultaneously?
They should be compatible and not reduce each other's effectiveness
What is the main benefit of using broad-spectrum/non-selective pesticides?
They are active on a multitude of different pests
What is the main characteristic of narrow-spectrum/selective pesticides?
They are only active on certain types of pests
What is the primary economic consideration for using pesticides?
They should be as inexpensive as possible
What is the abbreviation for suspension concentrate?
SC
Which type of formulation is characterized by slow release of the active ingredient?
Microencapsulated (M or ME)
What is the main feature of ready-to-use aerosol formulations?
Self-contained units
Which formulation type is often used for pest control operations similar to Emulsifiable Concentrates (ECs)?
Flowable (F)
What might cause residues to remain longer than expected on treated plants or surfaces?
Dry or cool weather conditions
Which type of formulation uses an inert pressurized gas to propel pesticide through a fine opening?
Aerosol (A)
What type of pesticide is effective for the control of sucking insects?
Contact poison
What is the mode of action for stomach poisons?
Absorbed through the digestive tract
How do translaminar pesticides work?
Forming a reservoir of active ingredient within the leaf
What is the method of application for systemic pesticides?
Applying as a drench or granule to the growing medium
Which type of pesticide is effective against insects with chewing-type mouthparts?
Stomach poison
What is the main difference between contact poisons and systemic pesticides?
Contact poisons are applied directly to the insect's body, while systemic pesticides are applied to the growing medium.
What is the main reason why pesticides can be incompatible when mixed?
Their pest control activity changes
Which type of adjuvant helps to reduce excessive foaming of spray mixtures?
Antifoaming agent
What should be done first when using a buffer or pH modifier?
Ensure the water is pH neutral or slightly acidic
Which of the following is NOT a reason for pesticide incompatibility?
Increased effectiveness
What do compatibility agents help with?
Mixing pesticides effectively
When should you consult the pesticide product label regarding adjuvants?
Before using the adjuvant
What type of surfactants are most often used with contact pesticides?
Anionic surfactants
Which type of surfactants should not be used as stand-alone surfactants due to potential phytotoxicity?
Cationic surfactants
What type of surfactants are often used with systemic products to help pesticides penetrate plant cuticles?
Nonionic surfactants
What does acute exposure refer to in the context of pesticide poisoning?
A one-time contact with a pesticide for 24 hours or less
How is chronic toxicity studied in experimental animals?
By exposing them to a pesticide for more than three months
Which type of surfactants are compatible with most pesticide products?
Nonionic surfactants
Test your knowledge on the application of agricultural pesticides, focusing on stability, effectiveness, and impact on biological equilibrium. Explore the properties required for accurate and effective application of pesticides to crops and plants.
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