Knowledgebase
Fertilizer #929277
Asked April 22, 2026, 4:41 PM EDT
Macomb County Michigan
Expert Response
I assume you are referring to a soil test report from a test you had done.
Can you please let me know the MSU Soil Test Report Code for that soil test? Or send me a copy of that soil test report.
Thank you!
This article will explain Fertilizer Basics at this link:
Smart Gardening: Fertilizer Basics for the Smart Gardener - Gardening in Michigan
Yes sorry. #RVHM68. The report says I need to add nitrogen and potassium. Just wondering wher to get the fertilizer at is it easier to find 200 20 or 12 zero 12/303.
thank you for your help.
Chris
Hello again, Chris
From the Fertilizer Calculator:
Based on 1 lb. N/1000 ft.²
4.55 lbs of fertilizer to apply 1 lb. N/1000 ft.²
1 lbs of K2O per 1000 ft.² applied
If you get the NPK 22-0-22 fertilizer (which you say is available):
Use Example 1 (Option 1) from your soil test
You need to use 16 pounds of NPK 22-0-22 fertilizer as indicated below:
Manufactured Fertilizer: Apply 22-0-22 fertilizer at 10.67 pounds per 1000 sq ft before planting and till it into the soil. Make a second application of 22-0-22 fertilizer at 5.33 pounds per 1000 sq ft 3 weeks after plants emerge and till in between the rows.
Option 1 Characteristics: More readily available for plant uptake, a more concentrated form of nutrients, and generally less expensive per pound of fertilizer nutrient.
I hope this helps!
