C27 License Pest and Disease Management 3

Question 1

What does the Re-Entry Interval (REI) printed on a pesticide label specify?

Accepted Answer

The minimum time workers must wait before entering a treated area without protective equipment

Answer

The REI is the minimum time that must pass after a pesticide application before workers may re-enter the treated area without full personal protective equipment.

Question 2

Which pest management practice involves selecting and planting species or cultivars that are inherently resistant to common pests and diseases?

Accepted Answer

Cultural control through resistant plant selection

Answer

Planting pest-resistant or disease-resistant cultivars is a cultural control strategy that reduces the need for chemical interventions over time.

Question 3

What is the primary visible symptom of iron chlorosis in landscape plants?

Accepted Answer

Dark green veins with yellowing between veins on young leaves

Answer

Iron chlorosis causes interveinal chlorosis on new growth, where the tissue between the veins turns yellow while the veins remain green due to insufficient iron for chlorophyll production.

Question 4

Under California pesticide regulations, how long must pesticide application records be retained by a licensed applicator?

Accepted Answer

3 years from the date of application

Answer

California regulations require that pesticide use records be maintained for a minimum of three years and made available for inspection by CDPR or the county agricultural commissioner.

Question 5

Which of the following pest species is primarily known for damaging turfgrass by feeding on roots below the soil surface?

Accepted Answer

White grubs (larvae of Scarab beetles such as Cyclocephala spp.)

Answer

White grubs are larvae of scarab beetles that feed on turfgrass roots below the soil surface, causing turf to die in irregular patches and lift away easily like a carpet.

C27 License - C-27 Landscaping Contractor License Practice Test

C27 License - C-27 Landscaping Contractor License Practice Test

C27 License Pest and Disease Management 3