National Core Manual - Chapter Ten

Question 1

Compatible Pesticides

Answer 1

can be mixed and applied in combination without reducing the effectiveness or changing the physical and chemical properties of the mixture

Question 2

Incompatible Pesticides

Answer 2

problems develop when mixed

Question 3

Two Types of Pesticide Incompatibility

Answer 3

physical & chemical

Question 4

Physical Incompatibility

Answer 4

failure of pesticide products to stay uniformly mixed in the spray tank

Question 5

Physical Incompatibility Causes

Answer 5

improper mixing procedures, inadequate agitation, lack of stable emulsifiers, mixing with liquid fertilizers, mixing pesticides with hard water

Question 6

Chemical Incompatibility

Answer 6

when mixing certain pesticides in the spray tank alters the activity of one or more of them; chemical reaction takes place and produces new substances

Question 7

Conducting a Compatibility Test

Answer 7

use a small glass jar, mix proportionate amounts of carrier and products - start with one fifth to one half with carrier then add proportionately

Question 8

Tank Mixing Order

Answer 8

1. fill 1/5 to 1/2 w/ carrier, start agitation
2. add compatibility agent is necessary
3. add suspension products - first, dry then liquids
4. add solution products
5. add surfactants or other adjuvants if needed
6. add emulsion products

Question 9

PPE While Mixing

Answer 9

body protection, face protection, respiratory protection, eye protection

Question 10

High Exposure Risk Application Types

Answer 10

mist blower or air blast sprayers, aerosol and fog generators, high pressure sprayers and power dusters, equipment that directs applications overhead

Question 11

Rinsates

Answer 11

the rinsed portion of the pesticide when you’re cleaning the container - if possible rinse at application site, keep away from bodies of water

Question 12

Allowable Rinsate Adding

Answer 12

pesticide in the rinsate is labeled for use on the target site for the new mixture, amount of pesticide in the rinsate plus the amount of new pesticide does not exceed the label rate for the target site, rinsate is used to dilute a mixture containing the same or a compatible pesticide

Question 13

Not Allowable Rinsate Adding

Answer 13

if it contains strong cleaning agent that might harm, would alter the pesticide mixture to make it unusable (i.e physically or chemically incompatible products)