Wisconsin Pesticide Applicator Practice Test

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Question: 1 / 50

What does LD 50 stand for?

Amount of pesticide that kills 50% of the insect population

Concentration of pesticide in the soil that kills 50% of plant life

Dose that kills half of the test animals

The acronym LD 50 stands for "lethal dose 50," which refers to the amount of a substance that is lethal to 50% of a population. In this case, LD 50 specifically refers to the dose that is lethal to 50% of the test animals in a study. Option A is incorrect because it only refers to insects, not all test animals. Option B is incorrect because it mentions the concentration of the pesticide in soil, not the lethal dose. Option D is incorrect because it refers to the duration of effectiveness, not the lethal dose. It's important to note that LD 50 is a measure of toxicity, not effectiveness in controlling pests.

Duration a pesticide remains effective for controlling 50% of pests

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