Using the attached Table 9-10 from the text, indicate how many ...

[kellyjaisingh]

Using the attached Table 9-10 from the text, indicate how many ounces of potassium nitrate (13-0-44) and ammonium nitrate (33-0-0) to add to 100 gallons of water to yield a solution of approximately 200 ppm nitrogen (N) and 200 ppm potassium (K20).
 
  What will be an ideal response?

Question 2

Why is a back-flow preventer used in the greenhouse?
 
  What will be an ideal response?

[zogaridan]

Answer to Question 1

6 oz potassium nitrate plus 6 oz ammonium nitrate.

Answer to Question 2

It is placed in the water line before the fertilizer injector to prevent
fertilizer from backing up into the water lines.