RAW MATERIALS The effectiveness of any granular fertilizer blend depends on the quality and composition of its raw materials. Each component plays a specific role in supporting plant health, soil enrichment, and nutrient availability. The chart below provides a breakdown of the key raw materials commonly used in granular fertilizers.
NITROGEN Raw Material
N P K Ca Mg S Fe Mn B Cu Mo Zn Granular
Mini
Micro
Activated Sludge - Biolsolids
5
4
1.25
Ammonium Sulphate
21
24
Calcium Nitrate
15.5
19
Crystal Green
5
28
10
Di-Ammonium Phosphate Methylene DiUrea 40-0-0
18 46
40
Milorganite
6
2
1.2
4
Mono-Ammonium Phosphate Mono-Ammonium Phosphate
10 40 11 52
Nature Safe 5-6-6 Nature Safe 8-3-5 Nature Safe 13-0-0
5 8
6 6 5 1.5 4 3 5 3 2.2 4
13 41 42 43
1.25
POLYON 41 POLYON 42 POLYON 43 POLYON 43.5
43.5
POLYON 44
44
POLYON Mono-Ammonium Phosphate POLYON Super K 10-12 Mo
10 48
11 11 46 46 46 39 38 21 40 22 21
43 43
Potassium Nitrate
UFLEXX UMAXX
Urea
Urea Formaldehyde Urea Formaldehyde
Yara 21-7-14 Yara AMIDAS
7 14
5.1 5.5
Yara NK GREEN Yara Turf Royale
12
7 14
5.1
*Colored boxes within the Granular, Mini, and Micro columns indicate the material in the same row is an option for custom fertilizer blending.
Not all materials are available in every market or geography. Please contact your local Harrell’s rep to understand what is available.
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