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Crop Protection Reviewer for the Agriculturist Licensure Examination

Crop Protection is where entomology, plant pathology and weed science meet the practical question the examination keeps returning to: what is damaging this crop, and what is the defensible response?

550 free practice questions · 2 topics · every answer explained · no account needed

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What Crop Protection covers on the board exam

  • Insect identification, life cycles and the damage each stage causes.
  • Plant pathology: pathogen groups, disease cycles, symptoms and diagnosis.
  • Weed biology and competition, and the management options against them.
  • Integrated Pest Management — economic thresholds, scouting, biological control and the sequencing of tactics before chemicals.
  • Pesticide classification, mode of action, safety and stewardship.

Study note. Group pesticides by mode of action rather than by trade name. The examination asks about resistance management far more often than about products.

Crop Protection topics you can review right now

Sample Current News and Conceptual Applications questions with answers and explanations

Board-style items taken from the Crop Protection bank. Every answer is explained, which is the part that makes a review question worth doing twice.

  1. A sugarcane extension team in Negros Occidental finds dense colonies of red-striped soft scale insect (Pulvinaria tenuivalvata) on the undersides of leaves, extensive honeydew, and black sooty growth. Which immediate field action best supports both diagnosis and outbreak containment?

    • A. Spray the entire mill district immediately with one insecticide regardless of infestation level
    • B. Burn every sugarcane field within five kilometers of the observation
    • C. Wait until harvest because sooty growth is only cosmetic
    • D. Collect georeferenced samples, confirm identification, delimit infested blocks, and restrict movement of infested planting materials correct

    Why: Confirmation, georeferenced delimitation, and movement control are the defensible first steps for an expanding pest; indiscriminate area-wide spraying or delay can worsen ecological and spread risks.

  2. A mill district must compare red-striped soft scale insect (Pulvinaria tenuivalvata) pressure among farms with different row lengths. Which sampling metric is most defensible?

    • A. Kilograms of insecticide purchased per barangay
    • B. Total insects counted in each entire farm
    • C. Percentage of farmers reporting black leaves
    • D. Number of infested leaves per fixed number of randomly selected stalks correct

    Why: A fixed, standardized plant-based sampling unit allows valid comparisons among farms of different sizes and avoids confounding infestation with area or farmer behavior.

  3. After an organic contact treatment against red-striped soft scale insect (Pulvinaria tenuivalvata), a researcher sees fewer live scales but abundant old sooty mold remains. What is the best interpretation?

    • A. Live-insect counts and new honeydew production should be assessed because old sooty mold can persist after pest mortality correct
    • B. The treatment failed because blackened leaves did not become clean immediately
    • C. The field should be classified as pest-free based only on the reduced stickiness of leaves
    • D. Only yield data are needed; insect survival should be ignored

    Why: Residual sooty mold is not a direct measure of current survival. Post-treatment evaluation should separate live scale density and new honeydew from old discoloration.

  4. A sugarcane cooperative plans to move seed cane from a farm with suspected red-striped soft scale insect (Pulvinaria tenuivalvata) to an uninfested municipality. Which decision is most appropriate?

    • A. Mix the seed cane with material from clean farms
    • B. Move the cane at night to reduce crawler activity
    • C. Withhold movement until official inspection and pest-status confirmation, then use certified clean planting material correct
    • D. Wash the trucks but move the planting materials without inspection

    Why: Planting-material movement is a major pathway for sessile or crawler-producing pests. Official inspection and clean material are more reliable than informal washing or mixing.

Practise the full Crop Protection bank free

Crop Protection reviewer — common questions

Is this Crop Protection reviewer free?

Yes. Every Crop Protection question, answer and explanation on AgLE Online Review is free to use. There is no account, no sign-up, no trial and no paywall, and the reviewer is open to examinees anywhere in the world.

How many Crop Protection questions are there?

The Crop Protection bank currently holds 550 distinct questions across 2 topics. Every item is a separate question — the count is not padded with reworded copies of the same one.

Can I practise Crop Protection by topic?

Yes. Opening Crop Protection in the reviewer shows its topics first, and a session can be run on a single topic or across all of them. You can also choose Practice Mode for instant explanations or Exam Mode for timed board conditions.

Are these actual AgLE board questions?

No, and no reviewer that claims otherwise should be trusted. These are board-style practice items written and curated to match the coverage and difficulty of the Agriculturist Licensure Examination. Consult the current PRC Table of Specifications for the official scope.

Review the other AgLE board subjects