How do I know if my fertilizer contains enough slow-release nitrogen?

The percentage of slow-release nitrogen is listed in the guaranteed analysis table on your fertilizer’s package. To find out if at least 50% of the nitrogen is slow-release nitrogen, divide the amount of slow-release nitrogen by the amount of total nitrogen (also listed in the guaranteed analysis table). Multiply your answer by 100. If the result is 50 (%) or higher, your fertilizer contains the required amount of slow-release nitrogen.

Example

Fertilizer labeled 29-0-4

Guaranteed analysis table lists 29% Total Nitrogen and 5.9% Slow-Release Nitrogen

Equation

5.9 ÷ 29 = 0.2034 × 100 = 20.34%

This means 20.34% of the nitrogen contained in this fertilizer is slow-release nitrogen.

Does This Fertilizer Meet Slow-Release Nitrogen Requirements?

This fertilizer cannot be used because it contains less than 50% slow-release nitrogen.

More Information

For more information, E-mail Eddy Galindo or call 321-567-3976.

Show All Answers

1. When is the fertilizer Blackout Period?
2. What do the 3 numbers on my fertilizer's label mean?
3. What is slow-release nitrogen?
4. How do if I know if my fertilizer contains nitrogen or phosphorus?
5. Under Titusville's fertilizer rules, can I use fertilizer that contains phosphorus?
6. What is a Fertilizer Free Zone?
7. I use a lawn company. How am I supposed to know what kind of fertilizer they use on my lawn?
8. Under Titusville's fertilizer rules, can I use a fertilizer that contains nitrogen?
9. I own a business in Titusville. I often have one of my employees apply fertilizer to the landscaping. How do the new fertilizer rules affect me?
10. I have a lawn service business and often apply fertilizer for my clients. How do Titusville's fertilizer rules affect me?
11. Can I still use my rotary spreader for applying fertilizer?
12. What is a “watershed”?
13. How do I know if my fertilizer contains enough slow-release nitrogen?