Chpt. 16 Calculations for Mixing Pesticides

Question 1

How much wettable powder (WP) would you put in a 450-gallon tank, given directions to add 3 pounds WP per 100 gallons of water?

Answer 1

13.5

3 per 100 gal=3+3+3+3+1.5=13.5
3 pounds per 100 gallons of the total 450

Question 2

How much wettable powder (WP) would you put in an 80 gallon tank, given 3 pounds of WP per 100 gallons.

Answer 2

2.4

100 gal=100% so 80 gal=80%
80% as decimal=.8
3 pounds per 100 gal * .8
3*.8=2.4

Question 3

How much emulsifiable concentrate would you put in a 300 gallon tank given to add 3 pints per 100 gallons?

Answer 3

9 pints

Question 4

How much emulsifiable concentrate would you put in a 50 gallon tank, given to add 3 pints per 100 gallons?

Answer 4

1.5 pints
100/2=50
3/2=1.5

Question 5

If 1 pound of WP is recommended per 100 gallons of water, how many tablespoons of WP would you add to 1 gallon?

Answer 5

1 tablespoon

1 pound wettable powder per 100 gallons=1 tablespoon per gallon ~

Question 6

If 2 pints of EC are recommended per 100 gallons of water, how many teaspoons of EC would you add to 1 gallon?

Answer 6

2 teaspoons

1 pint emulsifiable concentrate per 100 gallons=1 teaspoon per gallon~

Question 7

How much do 100 gallons of water weigh?

Answer 7

830

8.3*100

Question 8

How much do 100 gallons of kerosene weigh?

Answer 8

660

6.6*100

Question 9

How many gallons of 25 percent emulsifiable concentrate (with 2 ponds pesticide per gallon) would you add to a 50 gallon tank to get a 1 percent active ingredient?

Answer 9

2.075

5018.3/2*100

Question 10

How many pounds of 25 percent wettable powder must you add to 100 gallons of water to get a 1 percent active ingredient mixture?

Answer 10

33.2

10018.3/25