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Agricultural Crop Disease Management - Category 1C - Iowa Commercial Pesticide Applicator Manual - Vocabulary latest update
Question: Plant Disease
CORRECT ANSWER : Any abnormal plant growth.
Question: Symptoms
CORRECT ANSWER : Visible effects of a plant disease on a
host plant.
Question: Pathogen
CORRECT ANSWER : The parasitic organism that causes a
disease.
Question: Plant Disease Triangle
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CORRECT ANSWER : 1 - Susceptible Host Plant 2 - Pathogen
- - Favorable Environment
Question: Host
CORRECT ANSWER: Plant being invaded by pathogen and
serving as food source.
Question: Favorable Environment
CORRECT ANSWER : Environmental factors that allow the
pathogen to invade the host plant.
Question: Environment
CORRECT ANSWER : The surroundings and/ or conditions that
the plants exist in.
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Question: Vector
CORRECT ANSWER : A virus transmitted by an insect.
Question: Stylet
CORRECT ANSWER : A needlelike structure found on plant-
parasitic nematodes.
Question: Disease Cycle
CORRECT ANSWER : The chain of events involved in disease
development.
Question: Inoculum
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CORRECT ANSWER : Any material capable of producing
infection and causing disease.
Question: Dissemination of Inoculum
CORRECT ANSWER : The spread or dispersal of a pathogen.
Question: Incubation Period
CORRECT ANSWER : The period between infection and the
first appearance of symptoms.
Question: Economic Injury Level
CORRECT ANSWER : The density of a pest population when
the cost of management equals the amount of crop lost by the pest.