Agronomy Written Test Questions
2025/2026 Exam All Answers and
1
Illustrations Given
Living organisms that cause disease are often referred to as - 🧠 ANSWER
✔✔pathogens
Which of the following is a benefit of integrated pest management? - 🧠
ANSWER ✔✔reduced pesticide costs
the point at which the cost of pest control equals the revenue loss caused
by a pest - 🧠 ANSWER ✔✔economic injury level
which method of pest control involves making the crop environment
unsuitable for pests to feed, live, or reproduce? - 🧠 ANSWER ✔✔cultural
what are used to kill unwanted plants? - 🧠 ANSWER ✔✔herbicides
what is caused by environmental imbalances and cannot be spread to
other plants? - 🧠 ANSWER ✔✔noninfectious disease
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,what are the three components of the diseases triangle? - 🧠 ANSWER ✔✔a
susceptible host, a casual agent, and environmental conditions
2
what are the principle causes of most diseases that affect agricultural
crops? - 🧠 ANSWER ✔✔fungi
which of the following is a cultural/physical method used to manage pest
populations? - 🧠 ANSWER ✔✔removing and destroying infected plants
living, disease-producing agent - 🧠 ANSWER ✔✔pathogen
optimum care of plants through irrigation and fertilization reduce weed,
diseases, and insect problems. which type of disease control measure do
these represent? - 🧠 ANSWER ✔✔cultural
use of beneficial predatory insects is an example of which type of pest
control? - 🧠 ANSWER ✔✔biological
why is the implementation of an IPM program beneficial to the
environment? - 🧠 ANSWER ✔✔there is reduced contamination and
degradation of soil and water
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,a grower notices that a crop displays yellow streaking and stunted growth
and identifies the problem as virus-related. how would this type of
3
disturbance be classified? - 🧠 ANSWER ✔✔infectious disease
what is a tiny, hair-like roundworm that feeds on the roots of plants? - 🧠
ANSWER ✔✔nematode
what is a main objective of control of plant pests? - 🧠 ANSWER
✔✔maintaining healthy plants by providing optimal growing conditions
what is the first step in choosing an insecticide for pest control? - 🧠
ANSWER ✔✔properly identify the pest
what is a nonselective herbicide? - 🧠 ANSWER ✔✔one that will kill any
plant with which it comes in contact
what are absorbed by the roots of other plant parts and moved throughout
the plant by vascular tissues? - 🧠 ANSWER ✔✔translocated herbicides
dicot plant weeds including dandelions, ground ivy, plantain, and spurge
are called - 🧠 ANSWER ✔✔broadleaf weeds
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, this type of control uses insects, diseases, predators, or other plants that
are harmful to weeds without causing damage to crops - 🧠 ANSWER
4
✔✔biological weed control
what type of weed is injurious to crops, people, or livestock? - 🧠 ANSWER
✔✔noxious
what type of pesticide is used to kill unwanted plants? - 🧠 ANSWER
✔✔herbicides
a farmer wants to eliminate ragweed and pigweed that are competing with
corn in a field. what type of herbicide should she use? - 🧠 ANSWER ✔✔a
selective herbicide
what classification of herbicides is applied before the weeds and/or crop
emerges, but after the crop has been seeded? - 🧠 ANSWER
✔✔preemergent herbicides
what refers to how herbicides kill weeds, such as, seedling growth
inhibitors and photosynthesis inhibitors? - 🧠 ANSWER ✔✔mode of action
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
2025/2026 Exam All Answers and
1
Illustrations Given
Living organisms that cause disease are often referred to as - 🧠 ANSWER
✔✔pathogens
Which of the following is a benefit of integrated pest management? - 🧠
ANSWER ✔✔reduced pesticide costs
the point at which the cost of pest control equals the revenue loss caused
by a pest - 🧠 ANSWER ✔✔economic injury level
which method of pest control involves making the crop environment
unsuitable for pests to feed, live, or reproduce? - 🧠 ANSWER ✔✔cultural
what are used to kill unwanted plants? - 🧠 ANSWER ✔✔herbicides
what is caused by environmental imbalances and cannot be spread to
other plants? - 🧠 ANSWER ✔✔noninfectious disease
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,what are the three components of the diseases triangle? - 🧠 ANSWER ✔✔a
susceptible host, a casual agent, and environmental conditions
2
what are the principle causes of most diseases that affect agricultural
crops? - 🧠 ANSWER ✔✔fungi
which of the following is a cultural/physical method used to manage pest
populations? - 🧠 ANSWER ✔✔removing and destroying infected plants
living, disease-producing agent - 🧠 ANSWER ✔✔pathogen
optimum care of plants through irrigation and fertilization reduce weed,
diseases, and insect problems. which type of disease control measure do
these represent? - 🧠 ANSWER ✔✔cultural
use of beneficial predatory insects is an example of which type of pest
control? - 🧠 ANSWER ✔✔biological
why is the implementation of an IPM program beneficial to the
environment? - 🧠 ANSWER ✔✔there is reduced contamination and
degradation of soil and water
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,a grower notices that a crop displays yellow streaking and stunted growth
and identifies the problem as virus-related. how would this type of
3
disturbance be classified? - 🧠 ANSWER ✔✔infectious disease
what is a tiny, hair-like roundworm that feeds on the roots of plants? - 🧠
ANSWER ✔✔nematode
what is a main objective of control of plant pests? - 🧠 ANSWER
✔✔maintaining healthy plants by providing optimal growing conditions
what is the first step in choosing an insecticide for pest control? - 🧠
ANSWER ✔✔properly identify the pest
what is a nonselective herbicide? - 🧠 ANSWER ✔✔one that will kill any
plant with which it comes in contact
what are absorbed by the roots of other plant parts and moved throughout
the plant by vascular tissues? - 🧠 ANSWER ✔✔translocated herbicides
dicot plant weeds including dandelions, ground ivy, plantain, and spurge
are called - 🧠 ANSWER ✔✔broadleaf weeds
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, this type of control uses insects, diseases, predators, or other plants that
are harmful to weeds without causing damage to crops - 🧠 ANSWER
4
✔✔biological weed control
what type of weed is injurious to crops, people, or livestock? - 🧠 ANSWER
✔✔noxious
what type of pesticide is used to kill unwanted plants? - 🧠 ANSWER
✔✔herbicides
a farmer wants to eliminate ragweed and pigweed that are competing with
corn in a field. what type of herbicide should she use? - 🧠 ANSWER ✔✔a
selective herbicide
what classification of herbicides is applied before the weeds and/or crop
emerges, but after the crop has been seeded? - 🧠 ANSWER
✔✔preemergent herbicides
what refers to how herbicides kill weeds, such as, seedling growth
inhibitors and photosynthesis inhibitors? - 🧠 ANSWER ✔✔mode of action
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
