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.
Fertilizer labeled 29-0-4
Guaranteed analysis table lists 29% Total Nitrogen and 5.9% Slow-Release Nitrogen
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.
For more information, E-mail Eddy Galindo or call 321-567-3976.