1a: Chapter 3

Question 1

Why are pesticide exposure concerns greater in greenhouses than the field

Answer 1

Greenhouses are enclosed with limited airflow, which does not aid in the dispersal of pesticides

Question 2

Why do you need to take more precautions with PPE in a greenhouse than is indicated by the label

Answer 2

When pesticide labels are created, they might only be considering the appropriate PPE for outdoors where the airflow is different than in greenhouses, even if it is not specified for either

Question 3

How can you become exposed to pesticides during greenhouse applications

Answer 3

Because of the limited airflow and volume, it is easier to inhale pesticides. It also causes airborne mists to linger for longer which can be dangerous for your skin and eyes. Greenhouses make it more likely that you will come into contact with treated plants

Question 4

What PPE should you wear in a greenhouse and why

Answer 4

You should always wear a respirator to protect from inhaling (either full-face or with chemical resistant goggles for the eyes), chemical resistant spray suit, unlined chemical resistant boots, and chemical resistant gloves to protect all skin from contact

Question 5

How to keep pesticides in and protect workers outside of the treated area

Answer 5

Make sure that ventilation is not blowing the pesticide outside of the greenhouse, turn off fans, close doors/windows, put on sign to notify people and lock doors if necessary

Question 6

Environmental concerns in greenhouses

Answer 6

Drift and water contamination

Question 7

What factors affect drift in a greenhouse

Answer 7

Temperature, humidity, and ventilation. In warmer environments pesticides can volatilize quickly, but in humid ones they take much longer to evaporate and stick around much longer. Ventilation systems can cause air (and pesticide) to move around