Step 5: Additional Questions

The greenhouse manager was asked the following questions:

  1. What are you fertilizing with?

Answer – We fertilize with our brand name water-soluble fertilizer.  It is rated 20-20-20, and has added micronutrients.

  1. How much iron is in the fertilizer?



  1. How do you apply the fertilizer?

Answer: With a fertigator.  We put about one cup of fertilizer into a 5-gallon bucket and fill it with water.  Then the machine dilutes it into the irrigation water.

  1. Do you know by how much it dilutes the concentrate to?

Answer: Not sure, but it might say on the machine.  (it was all faded and unreadable)