C27 License Pest and Disease Management 2

Question 1

In an IPM program, what is the correct hierarchy of pest control tactics from least to most environmentally disruptive?

Accepted Answer

Cultural and mechanical → Biological → Least-toxic chemical → Conventional chemical

Answer

Chemical → Biological → Cultural → Mechanical

Answer

Biological → Chemical → Mechanical → Cultural

Answer

Conventional chemical → Biological → Cultural → Mechanical

Question 2

For the most effective disease prevention, when should a protectant fungicide typically be applied?

Accepted Answer

Before infection occurs, when environmental conditions favor disease development

Answer

After visible symptoms of disease are already present on the plant

Answer

Only during the dormant season when plants are not actively growing

Answer

Immediately following a heavy rainfall event to wash off spores

Question 3

What is the primary purpose of a Safety Data Sheet (SDS) for a pesticide product?

Accepted Answer

To communicate hazard information, safe handling procedures, and emergency response guidance

Answer

To provide application rate recommendations for various pest species

Answer

To document the pesticide's registration number with the EPA

Answer

To certify that the product is approved for use in California

Question 4

Which insect vector is primarily responsible for spreading citrus greening disease (Huanglongbing) to citrus trees?

Accepted Answer

Asian citrus psyllid (Diaphorina citri)

Answer

Citrus thrips (Scirtothrips citri)

Answer

California red scale (Aonidiella aurantii)

Answer

Citrus mealybug (Planococcus citri)

Question 5

What is the correct definition of a pre-emergent herbicide?

Accepted Answer

A herbicide applied before weed seeds germinate to prevent seedling establishment

Answer

A herbicide applied after weeds have germinated and are actively growing

Answer

A herbicide used only on established broadleaf weeds in turf

Answer

A herbicide that kills existing vegetation before replanting

Question 6

Which of the following symptoms in landscape plants is most likely caused by overwatering and can be mistaken for pest or disease damage?

Accepted Answer

Yellowing of older leaves, wilting despite moist soil, and root rot

Answer

Stippling on leaf surfaces with fine webbing on undersides

Answer

Sticky honeydew deposits on leaves with sooty mold growth

Answer

Raised galls or cankers on woody stems and branches

Question 7

Under California Department of Pesticide Regulation (CDPR) rules, what is the general buffer zone requirement when applying pesticides adjacent to bodies of water?

Accepted Answer

Buffer zones vary by product label but applicators must follow label directions and applicable regulations to prevent water contamination

Answer

No buffer zone is required if a licensed applicator performs the application

Answer

A minimum 100-foot buffer from all water sources is required for all pesticide applications

Answer

Buffer zones apply only to aerial applications, not ground-based landscape applications