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QAL & QAC EXAM LATEST UPDATED
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QAL & QAC EXAM 2024-2025LATEST UPDATED
Pesticides are - Answer Pest-controlling substances can be naturally occurring
compounds, such as sulfur, or synthetic (i.e. man-made) compounds, such as the
pesticide Malathion.
ANSWER 1: Pesticides are compounds that suppress pests.
2. Plant defoliants.
3. Plant Growth Regulators
4. Adjuvants.
Plant defoliants are used to remove leaves from plants, most commonly during
crop harvesting.
Plant growth regulators (PGR) are - ANSWERs used to control plant growth
and development.
Adjuvants are products that are added to a pesticide tank to improve its
effectiveness. They may improve the mixture's wetting ability, boost pesticide
penetration into plant or insect tissue, or decrease pesticide drift.
Although adjuvants have no major pesticidal efficacy, DPR regulates them
almost identically to insecticides.
Examples of Adjuvants - ANSWER Surfactants... assist pesticides in
penetrating target plants such as weeds.
Stickers... help the pesticide remain on the target plant's leaves.
Buffers make acidic or alkaline water more neutral.
Drift control agents and deposition aids... Prevent spray drift.
, Defoamers reduce tank foaming.
Spreader - Stickers
Pesticide Formulations - Answer A combination of two or more substances.
Pesticide formulations consist of an active component and one or more inert
compounds.
The active compounds have pesticidal properties.
Pesticide Formulations: ANSWER Liquids Excellent compatibility with other
insecticides. There's no need for agitation. However, they can cause a splash
danger and are rapidly absorbed by the skin.
Wettable powders are usually highly compatible with other insecticides.
However, they can pose an inhalation hazard. Because they are not soluble in
water, they can be abrasive to equipment and require agitation.
Soluble powders are comparable to wettable powders, but dissolve more easily
in water. As a result, they're less abrasive to equipment and typically require
agitation.
Emulsifiable concentrates are pesticide/petroleum solvent combinations that
have been prepared with an emulsifier to assist them mix with water. They enter
plant tissue. However, they are rapidly absorbed via human skin, provide a
substantial eye threat to handlers, and require agitation in the mixing tank. They
may be phytotoxic to plants.
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