Seaweed Extract 18%

18% Seaweed Extract Fertilizer

Product Name

Liquid, flakes or powder Seaweed Extract Fertilizer 18%

Product Description

This premium 18% formulation delivers the highest natural levels of plant growth regulators (auxins, cytokinins, gibberellins, brassinosteroids), alginic acids, mannitol, glycine betaine, laminarin, fucoidan, complex polysaccharides, oligopeptides, free amino acids, vitamins and organically chelated trace elements currently available in liquid form.

The 18% concentration corresponds to minimum 180 g/L dry seaweed solids (18% w/v equivalent) with typical values 185–195 g/L in current production batches.

Physical and Chemical Properties

PropertySpecification
AppearanceVery dark brown to near-black viscous liquid/flakes/powder
OdourIntense characteristic marine/seaweed
pH (neat)9.0 – 10.5
pH (1:100 dilution)8.5 – 9.8
Density @ 20°C1.22 – 1.30 kg/L
Solubility in water100% miscible
Viscosity @ 20°C300 – 800 cP
Freezing point≈ –8°C to –10°C
Boiling point>100°C
Shelf life (unopened, cool storage)Minimum 4 years

Guaranteed Minimum Analysis (w/v)

ComponentContent
Seaweed extract (Ascophyllum nodosum)18.0% (minimum 180 g/L)
Organic matter≥ 15.0%
Alginic acid≥ 3.0% (≥ 30 g/L)
Mannitol≥ 1.0% (≥ 10 g/L)
Total Nitrogen (N)0.8 – 1.8%
Phosphorus pentoxide (P₂O₅) soluble0.3 – 6.0%
Potassium oxide (K₂O) soluble14.0 – 19.0%
Cytokinins + Gibberellins + Auxins + Brassinosteroids≥ 1 100 ppm
Total free amino acids + oligopeptides≥ 3.0%
Glycine betaine≥ 1 800 ppm
Laminarin + Fucoidan≥ 2.0%
Total trace elements (Fe, Zn, Mn, Cu, B, Mo, Co, I)≥ 0.8% (organically chelated)

Key Benefits

  • Exceptional root architecture development and explosive early vigour
  • Outstanding abiotic stress mitigation (drought, heat, cold, salinity, waterlogging, UV)
  • Dramatically improved nutrient-use efficiency – documented 20–35% reduction in NPK fertiliser requirements
  • Significantly higher chlorophyll density and photosynthetic rate resulting in superior yield and quality parameters
  • Excellent control of physiological disorders (blossom-end rot, tip burn, bitter pit, cracking)
  • Superior fruit size uniformity, colour, sugar content, flavour and post-harvest shelf life
  • Strong induction of systemic acquired resistance (SAR) and priming of plant defence pathways
  • Completely safe for pollinators, beneficial insects, earthworms and soil microbial populations

Recommended Application Rates (18% ultra-concentrate)

Application MethodDilution RateDosage per ha (per application)Frequency / Timing
Foliar spray1:1,500 – 1:3,0000.5 – 1.5 L3–6 applications from early vegetative to pre-harvest
Fertigation / drip1:5,000 – 1:10,0005.0 – 12.0 LWeekly to bi-weekly during peak demand periods
Soil drench1:2,000 – 1:4,0001.5 – 3.5 LAt transplanting, flowering and fruit development stages
Root dip (transplants)1:800 – 1:1,0000.10–0.125% solutionImmediately before planting
Seed treatment1:300 – 1:5004–8 mL/kg seedSoak 8–24 h or wet dressing

Compatibility

Outstanding stability and compatibility with humic/fulvic acids, amino acids, phosphites, biological inoculants and most conventional agrochemicals. Highly recommended in integrated programs with seaweed + humic + microbes.

Storage and Handling

  • Store between 5–30°C in dark conditions; avoid freezing and prolonged heat >40°C
  • Keep containers tightly sealed; product is hygroscopic
  • Thoroughly agitate/shake before use (natural settling may occur)
  • Non-hazardous, non-flammable, not classified as dangerous goods (ADR/IMDG/IATA)

Safety Information

  • Classification: Non-hazardous substance/non-dangerous good
  • Eye/skin contact: Rinse thoroughly with water
  • Ingestion: Drink water; no specific antidote required
  • Environmental: Readily biodegradable, EC50 >1 500 mg/L (aquatic organisms), safe at label rates

Packaging Options

5 L, 10 L, 20 L, 200 L drum, 1000 L IBC (Other sizes and private label available)