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QAL & QAC Questions And Answers With Verified Solutions Already Passed Latest Updated 2024
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QAL & QAC Questions And Answers With Verified Solutions Already Passed Latest Updated 2024
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QAL & QAC Questions And AnswersWith Verified Solutions Already Passed
Latest Updated 2024
What are pesticides?
Answer: Pesticides are substances used to control pests. They can be
naturally occurring, like sulfur, or synthetic, such as the insecticide
malathion.
What do pesticides do?
Answer:
1. Control pests
2. Act as plant defoliants
3. Serve as plant growth regulators
4. Function as adjuvants
What are plant defoliants used for?
Answer: Plant defoliants help remove leaves from plants, usually to assist in
the harvest of crops.
What are plant growth regulators (PGRs)?
Answer: PGRs are substances used to modify plant growth or development.
What are adjuvants?
Answer: Adjuvants are substances added to pesticide mixtures to enhance
their effectiveness. They can improve wetting, increase pesticide penetration
into plant or insect tissues, or reduce pesticide drift. Although adjuvants
have no pesticidal activity themselves, they are regulated similarly to
pesticides by the Department of Pesticide Regulation (DPR).
Examples of adjuvants:
Answer:
o Surfactants: Help pesticides penetrate target plants like weeds.
, o Stickers: Aid in the pesticide staying on plant leaves.
o Buffers: Neutralize the pH of water (acidic or alkaline).
o Drift Control Agents/Deposition Aids: Minimize spray drift.
o Defoamers: Reduce foaming in tanks.
o Spreader-Stickers: Combine spreading and sticking properties.
What are pesticide formulations?
Answer: Pesticide formulations are mixtures of active ingredients and inert
substances. They are designed to deliver the pesticide effectively.
Types of pesticide formulations:
Liquids: These have high compatibility with other pesticides and require no
agitation but can splash and are easily absorbed through the skin.
Wettable Powders: They mix well with other pesticides but can pose an
inhalation hazard. They are abrasive to equipment and usually require
agitation.
Soluble Powders: These dissolve easily in water, reducing abrasiveness but
still require agitation.
Emulsifiable Concentrates (EC): These are made of pesticide and solvent
mixtures that require agitation and can be absorbed through the skin. They
can be harmful to eyes and may cause plant toxicity.
Flowables: Made from finely ground particles in a liquid, these are easy to
handle but require agitation and can wear on equipment.
Dusts: These are dry, finely ground pesticides that don’t need mixing but
can be inhaled by applicators.
What are inert ingredients?
Answer: Inert ingredients typically have no pesticidal properties. Their main
role is to improve the performance of the pesticide, such as enhancing
mixing, application, and effectiveness. Examples include solvents,
surfactants, buffers, and even water.
What is pesticide incompatibility?
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