Southeastern U.S. Vegetable Crop Handbook - 2021 - 23

Table 3A. NUTRIENT VALUES FOR VARIOUS PLANT, ANIMAL, AND NATURAL PRODUCTS
Typical NPK Analysis
Plant By-Products
Alfalfa Meal or Pellets
Corn Gluten Meal
Cottonseed Meal
Soybean Meal
Kelp Powder
Animal By-Products
Bat Guano (high N)
Bat Guano (high P)
Blood Meal
Bone Meal (raw)
Bone Meal (steamed)
Feather Meal
Fish Emulsion
Fish Powder
Enzymatically Digested Hydrolyzed Liquid Fish
Fish Meal
Worm Castings
Natural Minerals
" Soft " Rock Phosphate
Greensand
0.0
0.0
14 to 16
0.0
0.0
3.0
Very slow (years)
Very slow
10.0
3.0
12.0 to 14.0
3.0
1.0 to 2.0
7.0 to 12.0
5.0
12.0
4.0
10.0
2.0
3.0
10.0
2.0
22.0
11.0 to 15.0
0.0
2.0
0.3
2.0
6.0
1.5
1.0
1.0
1.0
0.0
0.0
0.0
2.0
1.0
2.0
2.0
1.5
4 plus months
4 plus months
1 to 4 months
1 to 4 months
1 to 4 months
4 plus months
1 to 4 months
Immediate to 1 month
1 to 4 months
1 to 4 months
1 to 4 months
N
2.0
9.0
6.0
7.0
1.0
P2O5
1.0
0.0
0.4 to 3.0
1.2 to 2.0
0.0
K2
2.0
0.0
1.5
1.5 to 7.0
4.0
Release Time
1 to 4 months
1 to 4 months
1 to 4 months
1 to 4 months
Immediate to 1 month
TABLE 4. PERCENTAGE EQUIVALENTS AND CONVERSION FACTORS FOR MAJOR, SECONDARY, AND MICRONUTRIENT
FERTILIZER SOURCES
Fertilizer
Source Material
Nitrogen Materials
Monoammonium phosphate*
Nitrate of potash*
Nitrate of soda-potash*
Calcium nitrate*
Nitrate of soda
Diammonium phosphate*
Nitrogen solution
Ammonium sulfate*
Nitrogen solution
Nitrogen solution
Ammonium nitrate
Nitrogen solution
Urea
Anhydrous ammonia
Phosphorus Materials
Normal superphosphate*
Triple superphosphate*
Diammonium phosphate*
Potassium Materials
Nitrate of soda-potash*
Sulfate of potash-magnesia*
Nitrate of potash*
Sulfate of potash*
Muriate of potash*
Plant Food
Contents,%
11 (N) and 48 (P2O5
13 (N) and 44 (K2
15 (N) and 14 (K2
15 (N) and 19 (Ca)
16 (N)
)
O)
O)
18 (N) and 46 (P2O5
20 (N)
)
20.5 (N) and 23 (S)
30 (N)
32 (N)
33.5 to 34.0 (N)
40 (N)
45 to 46 (N)
82 (N)
20 (P2O5
44 to 46 (P2O5
Monoammmonium phosphate* 48 (P2O5
46 (P2O5
14 (K2
) and 11 (S)
)
) and 11 (N)
) and 18 (N)
O) and 13 (N)
21.8 (K2O) and 11.1 (Mg)
O) and 13 (N)
O) and 17 (S)
O)
44 (K2
50 (K2
60 (K2
Lb of Material
Required to Supply
1 Lb of the Initially
List ed Plant Nutrient
9.1
7.7
6.7
6.7
6.3
5.6
5.0
4.9
3.3
3.1
3.0
2.5
2.2
1.2
5.0
2.2
2.1
2.2
7.1
4.6
2.3
2.0
1.7
Fertilizer
Source Material
Magnesium Materials
Epsom salts*
Sulfate of potash-magnesia*
Kieserite*
Brucite
Sulphur Materials
Granulated sulfur
Ammonium sulfate*
Gypsum*
Epsom salts*
Boron Materials
Fertilizer Borate Granular*
Fertilizer Borate-48
Solubor
Fertilizer Borate-68
Manganese Materials
Manganese sulfate*
Manganese sulfate*
Manganese sulfate*
Manganese oxide
Manganese oxide
Zinc Materials
Zinc sulfate*
Zinc oxide
Molybdenum Materials
Sodium molybdate
Sodium molybdate
Ammonium molybdate*
* Supplies more than one essential nutrient.
14.30 (B)
14.91 (B)
20.50 (B)
21.13 (B)
24.0 (Mn)
25.5 (Mn)
29.1 (Mn)
48.0 (Mn)
55.0 (Mn)
36 (Zn)
73 (Zn)
39.5 (Mo)
46.6 (Mo)
56.5 (Mo)
7.0
6.7
4.9
4.7
4.2
3.9
3.4
2.1
1.8
2.8
1.4
2.5
2.1
1.8
Plant Food
Contents,%
10 (Mg) and 13 (S)
11.1 (Mg) and 21.8 (K2
18.1 (Mg)
39 (Mg)
90 to 92 (S)
23 (S) and 20.5 (N)
15-18 (S) and 19 to 23 (Ca)
13 (S) and 10 (Mg)
O)
Lb of Material
Required to Supply
1 Lb of the Initially
List ed Plant Nutrient
9.6
9.0
5.5
2.6
1.1
4.3
6.1
7.7
2021 Vegetable Crop Handbook for Southeastern United States
23
Southeastern U.S. Vegetable Crop Handbook - 2021

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