1:2 N-K ratio for increased soil K levels to aid in plant hydration and disease suppression


Suståne 5-2-10+Fe combines Suståne organic compost base with iron sulfate organically chelated during the active aerobic composting phase providing for slow release iron for enhance chlorophyll production and turf color without excessive top growth. This is the ideal 1:2 N to K organic based fertilizer for summer and early autumn feeding.

Additional potassium is supplied for sandy soils and USGA type putting greens where potash is often lost through leaching.

Professional Grade 

Suståne products are derived from biologically stable humus-rich compost and contain both water soluble nitrogen (WSN) and slow release nitrogen (SRN), beneficial microbiology, and all 17 elements essential for plant photosynthesis. With a near-neutral pH, a low salt index and low ammonium nitrogen percentage, Suståne will not cause seedling stress or plant fertilizer “burn”. Suståne products increase soil cation exchange capacity (CEC) by supplying humates and stable organic matter. Suståne’s organic and blended natural fertilizers provide all soil types with additional buffering capacity, allowing for more consistent and productive growth.

Benefits of Suståne Aerobic Compost, used as a base ingredient in 5•2•10+Fe
  • 70% SRN
  • Natural potash for potassium deficient turf swards
  • Increases the nutrient and water holding capacity of soil
  • Strengthens plants’ tolerance of hot, dry conditions
  • Promotes greater root development
  • Improves buffering against changes in soil pH
  • Increases soil porosity and improves soil quality
  • Provides quick green up followed by six to eight weeks of even color and growth. 

Cool Season Grasses - Golf course greens, tees and fairways, sports fields, parks, and lawncare

Standard application rates
5.5 lb. to 11 lb. per 1000 ft2 (2.5 kg to 5 kg per 100 m2) as per N requirement. 

Warm Season Grasses- Golf course greens, tees and fairways, sports fields, parks, and lawncare

5-10 lb. per 1000 ft2 or 0.25 - 0.5 lb. N/1000 ft2 (2.5-5 kg per 100 m2) per application at frequency determined by clipping yields. 

Greens and Tees - On Bermuda Grass, 10 lbs. per 1000 ft2 per application every 30-45 days or as dictated by clipping weight.

*NOTE: Adjust fertilizer program for local conditions and requirements.


Turf Coverage

50 lb. covers 5,000 ft2 @ 1 lb N per 1,000 ft2.  (44 lb. N per acre)
22.67 kg covers 465 m2 @ 0.5 kg N per 100 m2 (50 kg N per hectare) 
20 lb. per 1000 ft2 = 100 g per 100 m2 

50-lb. bag covers 2,500 sq. ft. at 1 lb. N per 1,000 sq. ft.
Standard Appl. Rates Appl. Rate Lb. Product per 1,000 ft.2 Supplies Lb. N per 1,000 ft.2 Appl. Rate Lb. Product per Acre Supplies Lb. N Per Acre
Full Rate 20 1 871 44
Half Rate 10 0.5 436 22
Quarter Rate 5 0.25 218 11
22.67-kg. bag covers 232 sq. m. at 0.5 kg. N per 100 sq. m.
Standard Appl. Rates Appl. Rate Kg. Prod. Per 100 m2 Appl. Rate Grams Prod. Per 1 m2 Supplies Grams N Per 1 m2 Appl. Rate Kg. Prod. Per Hectare Supplies kg. N Per Hectare
Full Rate 9.8 98 4.9 976 48.8
Half Rate 4.9 49 2.4 488 24.4
Quarter Rate 2.4 24 1.2 244 12.2

Item # 
Suståne 5-2-10+Fe
Package Size Units / Pallets
(1.4 mm - 0.6 mm)
40-40-1175 (international)

50 lb. bags
1-ton tote
22.68 kg bags 

40 bags / pallet
1 tote / pallet
44 bags / ISPM pallet 
(2.8 mm - 1.4 mm)
40-40-1375 (international)

50 lb. bags
1-ton tote
22.68 kg bags 

40 bags / pallet
1 tote / pallet
44 bags / ISPM pallet


Total Nitrogen (N) 5%
1.1% Ammoniacal Nitrogen
3.5% Water Soluble Nitrogen*
0.2% Urea Nitrogen
0.2% Other Water Soluble Nitrogen*
Available Phosphate (P2O5) 2%
Soluble Potash (K2O) 10%
Calcium (Ca) 3%
Sulfur (S) 6%
Iron (Fe) 2%

Derived from aerobically composted turkey litter, methylene urea, sulfate of potash and iron sulfate.
*3.5% slowly available nitrogen from aerobically composted turkey litter and methylene urea.