Sigma 4-4-4 Bio

With Value-Added Biologicals

A balanced formula containing all the macronutrients plants need all season long. Formulated for organic use/farming, this premium-grade granular fertilizer contains nutrient-rich ingredients infused with value-added biologicals. Proprietary GranCORE Technology combines humic acid and essential nutrients such as NPK, Ca, and Fe into a slow-release and easy-to-spread granule. Our large grade size is an excellent choice for organic vegetable crop input.

Available Packaging:

50Lb.Poly Bag (22.68 KG) 2000 Lb.Totes (907 KG) Bulk Load

Guaranteed Analysis

Total Nitrogen (N) 4.0%
0.4% Water Soluble Nitrogen
3.6% Water Insoluble Nitrogen
Available Phosphate (P2O5) 4.0%
Soluble Potash (K2O) 4.0%
Calcium (Ca) 6.0%
Iron (Fe) 0.1%

Derived from processed Poultry manure, feather meal and sulfate of potash.

Humic Acids 3.0%
Beneficial Bacteria 2,800,000 CFU/Lb
Endomycorrhizae 6.2 Prop/Lb.
Trichoderma 480,000 CFU/Lb

Also available without BIO Package (beneficial bacteria, endomycorrhizae, trichoderma)

Application Rates



Medium: 19 lb. / 1000 sq ft. (0.75 lb. N)


High: 25 lb. / 1000 sq ft.(1.0 lb. N)

Golf Course

Low Rate:

12.5 lb. / 1000 sq ft.(0.50 lb. N)

Medium Rate:

19 lb. / 1000 sq ft. (0.75 lb. N)

High Rate:

25 lb. / 1000 sq ft. (1.0 lb. N)


Low Rate:

(Examples - peas, beans) Incorporate 1000 lb. per acre 2-3 weeks prior to planting.

Medium Rate:

(Examples - asparagus, beet, carrot, melon, pepper, cauliflower, broccoli, brussels sprouts, and celery) Incorporate 2500 lb. per acre 2-3 weeks prior to planting.

High Rate:

(Examples - onion, sweet corn, potato, tomato) Apply 2500 lb. per acre at planting then broadcast or band additional fertilizer after plants are well established or per organic certification rules.

Tree & Palm

Rate based on 1” of trunk diameter (caliper). Example: for 10” trunk diameter (caliper) multiply label rate by 10.


Mix with soil in bottom of holes priorto transplanting. Apply 6.0 lb. at Transplanting.


Apply 12.0 lb. at Transplanting.


Low Rate:

(for heavy substrates with porosity < 60%)


30 lb. per cubic yard of media


49 lb. per 1000 sq. ft.

Medium Rate:

(for most nursery stock and foliage plants)


45 lb. per cubic yard of media


86 lb. per 1000 sq. ft.

High Rate:

(for light substrates with porosity > 80%)


56 lb. per cubic yard of media


124 lb. per 1000 sq. ft.

Container Sizes

1 Gallon:  
Low Rate: 40 grams High Rate: 75 grams
2 Gallon:  
Low Rate: 75 grams High Rate: 150 grams
3 Gallon:  
Low Rate: 115 grams High Rate: 240 grams
5 Gallon:  
Low Rate: 150 grams High Rate: 325 grams
7 Gallon:  
Low Rate: 225 grams High Rate: 490 grams
10 Gallon:  
Low Rate: 275 grams High Rate: 590 grams
15 Gallon:  
Low Rate: 300 grams High Rate: 625 grams
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