
Sigma Agriscience - Microalgae
Brand: Sigma Agriscience
Sigma Agriscience Microalgae
Sigma Microalgae is a liquid soil amendment from Sigma Agriscience made from proprietary pasteurized, whole-cell single-cell microalgae at 10% by weight. It supplies proteins, lipids and carbohydrates as a mid-range food source for soil biology, feeding beneficial soil microbes and the strains in Sigma Bio.
Sigma uses Microalgae to increase beneficial soil microbial populations and diversity, make natural and applied nutrients more available, and improve soil structure, as microbial secretions bind soil particles for better aggregation, pore space and water holding. It mixes fully in water for soil-applied, irrigation and spray programs. Sigma packages it in Boling, Texas. Pricing is FOB Boling, TX, and freight is quoted separately.
Available Options
- 2 x 2.5 Gal (5 Gal) case
- 30 Gal Drum
- 250 Gal Tote
Key Features
- Guaranteed analysis: algae (microbe food) 10.0%
- Typical values: protein 24 g/L, lipids 21 g/L, carbohydrates 44 g/L, pH 3.5
- Density 8.51 lb/gal (1.02 kg/L) at 68 F
- Compatible with fungicides, insecticides, PGRs, wetting agents and fertilizers in the same application
- Turfgrass label rate: 64 to 128 oz per acre per application
Ideal Applications
- Turf, farm and lawn and garden soil programs
- At planting: in-furrow, T-band, seedbed spray, or bare root and transplant drench
- After planting: drip irrigation, sidedress, in-furrow or direct bed spray at 2 to 4 week intervals
Choose options

Registration & safety
- Signal word
- Warning
- Derived from
- No plant food guarantee. Soil amending active ingredient: 10.0% algae (microbe food); inert 90.0%. Flier: protein 24 g/L, lipids 21 g/L, carbohydrates 44 g/L.