Sapropel
Organic matter 50–90%, humic acids up to 60% of the organic matter, nitrogen 3–6%, trace elements, vitamins and amino acids.
Sapropel · peat · glauconite
Fertility,
Fertility,
grown by nature
Astarta produces organomineral bio-fertilizers and bio-soils based on sapropel and peat, with glauconite and dolomite added. Humic and fulvic acids, peat vermicompost, beneficial microorganisms and fungi — with no synthetic additives.
- Raw materials: sapropel, peat, glauconite, dolomite
- Humic acids as a liquid concentrate, powder and granules
- Bio-soils with mycorrhiza and beneficial microorganisms
About us
Natural raw materials plus biotechnology
Astarta is a young producer of organomineral bio-fertilizers. We work with natural raw materials and add what science contributes: humic and fulvic acids, peat vermicompost, nitrogen-fixing and phosphate-mobilizing bacteria, mycorrhizal fungi.
Sapropel is the bottom sediment of relict lakes: its value lies not so much in NPK as in biologically active substances — humic acids, amino acids, vitamins, enzymes. Peat is responsible for structure and moisture retention, glauconite releases potassium and silicon gradually, and dolomite gently deacidifies the soil.
Sapropel
Peat
Glauconite
Dolomite
Vermicompost
Microorganisms and fungi
Peat and vermicompost
Peat is the base of our substrates and bio-soils. We obtain vermicompost by vermicomposting and use it in bio-soils and top dressings.
Glauconite and dolomite
Glauconite: silicon 30–50%, potassium 6–9%, phosphorus 2–3%. Dolomite: calcium 30–40% and magnesium 20–30% for deacidifying soils.
Biotechnology
Our own division for the production of mycorrhizal fungi, Trichoderma and bacteria for bio-soils and biological products.
What it delivers
Why sapropel and peat rather than brown coal
Most humic acids in the world are made from brown coal — leonardite. In sapropel and peat the same acids are present in a more active form.
Lighter molecules — faster action
The molecular mass of humic acids in peat is about 5 times lower, and in sapropel about 2.5 times lower, than in leonardite.
Sapropel as a biostimulant
Vitamins B, C, E and D, amino acids, enzymes and carotenoids — the value of sapropel lies in its biological activity, not only in NPK.
Potassium and silicon with gradual release
Glauconite releases potassium, silicon and trace elements over the course of the season rather than in a single application, and keeps working for several years.
Bio-soils with a prolonged effect
Sapropel, peat vermicompost, glauconite and dolomite in one composition, with mycorrhiza and beneficial microorganisms, and with greater moisture-holding capacity.
Deacidification and nutrition together
Dolomite reduces acidity and enriches the soil with calcium and magnesium, so the bio-soil also suits the acidic soils of the North-West.
A full cycle on one site
Raw material extraction, humic acid extraction, vermicompost, microbiology and packing — all in one cluster.
Products
The range: from humic acids to bio-soils
Six lines that cover plant nutrition, soil restoration and work in protected ground.
Potassium humate
Water-based concentrate, 10% humic acids
- HA10%
- Raw materialsapropel
- Application rate1–3 l/ha
For foliar feeding, drip irrigation and hydroponics. It relieves stress from drought, frost and pesticide load.
Potassium fulvate
Water-soluble fulvic acid concentrate
- FAconcentrate
- pHneutral
- Application rate0.5–2 l/ha
With a lower molecular mass, fulvic acids penetrate into the plant and the soil faster than humic acids — for rapid support during critical growth stages.
Humic acids, powder and granules
Water-soluble, spray dried
- Formpowder / granules
- Solubilitywater-soluble
- Packaging25 kg / big bag
For fertilizer blends, granulated fertilizers and farms that find a dry form more convenient. We match the dosage to your nutrition programme.
Bio-soil
Sapropel, vermicompost, glauconite and dolomite
- Basesapropel + vermicompost
- Mineralsglauconite, dolomite
- Effectprolonged
A ready bio-soil for greenhouses, seedlings and open ground: enriched with macro- and micronutrients, and containing mycorrhiza and beneficial microorganisms.
Peat vermicompost
The product of vermicomposting peat
- Basepeat
- Formloose
- Applicationseedlings, greenhouses
Concentrated organic matter for seedlings, greenhouses, berry crops and gardens. Used both as a stand-alone fertilizer and as a base for substrates.
Glauconite concentrate
Natural glauconite from the Pskov region
- Silicon30–50%
- Potassium6–9%
- Phosphorus2–3%
A slow-release potassium-silicon fertilizer. It is mined, dried, crushed and screened into fractions — with no chemical treatment.
Production
From raw material to a finished batch
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01Extraction and preparation of raw materials
We lift sapropel from the bottom of relict lakes, and mine peat, glauconite and dolomite in the Pskov region.
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02Preparation and fractioning
We dry the raw material and screen it into fractions: glauconite sand needs no chemical treatment — crushing and screening are enough.
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03Extraction and granulation
From sapropel and peat we obtain humic and fulvic acids — as a water-based concentrate, and also as powder and granules.
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04Biotechnology, control and packing
In a dedicated division we grow mycorrhizal fungi and bacteria for our bio-soils. Every batch is checked in the laboratory.
A raw material base next to the production site
The project's raw material base is the deposits of the Pskov region: sapropel and peat, glauconite and dolomite. Both mining and production are located there.
Application
How to apply it on different crops
These are the baseline programmes we start from. Final rates are calculated for your specific field.
Cereal grains
wheat, barley, rye, oats- Main application: glauconite concentrate 200–400 kg/ha — potassium and silicon released over several seasons.
- Tillering: potassium humate 2 l/ha foliar, in a tank mix with herbicides.
- Flag leaf: potassium fulvate 1 l/ha for rapid support during a stress period.
- What to expect: gradual nutrition through the season, better moisture retention and soil structure.
Oilseeds
sunflower, rapeseed, flax- Pre-sowing: bio-soil or peat vermicompost 300–500 kg/ha to break down crop residues.
- 4–6 leaves: potassium humate 2–3 l/ha.
- Budding: potassium fulvate 1–2 l/ha for seed filling.
- What to expect: an even start, less stress from drought and heat, and gradual potassium nutrition.
Pulses
soy, peas, chickpeas, lentils- Seed treatment: a microbiological product with nitrogen-fixing bacteria.
- Before sowing: glauconite concentrate 150–300 kg/ha in the row.
- Branching: potassium humate 1–2 l/ha foliar.
- What to expect: potassium and silicon in an available form, and support for nodule bacteria thanks to the organic matter in sapropel.
Sugar beet and potato
intensive systems- Main application: bio-soil 400–600 kg/ha or glauconite concentrate 300–500 kg/ha.
- Row closure: potassium humate 3 l/ha.
- Tuber initiation / root growth: potassium fulvate 1–2 l/ha.
- What to expect: better marketable quality and storage life, and potassium nutrition with no sharp peaks.
Vegetable crops
open field and protected ground- Seedlings: bio-soil or peat vermicompost as a ready substrate, with no additional fertilizing.
- Transplanting: bio-soil into the planting hole or the row.
- Growing season: potassium humate 1–2 l/ha every 2–3 weeks, plus potassium fulvate where needed.
- What to expect: an early start, gentle feeding with no risk of over-fertilizing, and less transplant shock.
Orchards and vineyards
perennial plantings- Early spring: bio-soil 400–600 kg/ha in the tree-row strip.
- Before flowering: potassium humate 2 l/ha.
- Fruit filling: potassium fulvate 1–2 l/ha, two applications.
- What to expect: better soil structure in the tree-row strip and gradual potassium nutrition.
Rates are indicative and are refined against your soil test and your machinery — request a calculation.
Composition and testing
A composition you can verify
Laboratory testing
We test the raw material and the finished batch: humic and fulvic acid content, ash content, moisture, acidity. The results go into the quality certificate for that batch.
What we can provide
- Product composition and specifications
- Quality certificate for the batch
- Laboratory test reports
- Recommended application rates and timing
- Information on the origin of the raw materials
Natural raw materials
Sapropel, peat, glauconite and dolomite are natural materials with no synthetic additives. The project's raw material base is formed by deposits in the Pskov region.
50–90%organic matter in sapropel
30–50%silicon in glauconite
How we work
Five steps from enquiry to field
1
Enquiry
We clarify your crops, acreage, soil type and objective.
2
Product selection
Humate, fulvate, bio-soil or glauconite — we calculate the rate for your field and your machinery.
3
Trial batch
We start with a small volume so you can assess the product on your own field.
4
Delivery
We pack and ship: collection from our site or delivery by a freight carrier.
5
Support
We stay in touch all season and review the results together.
Questions and answers
Frequently asked questions
What are your fertilizers made of?
The base is sapropel (the bottom sediment of relict lakes) and peat. To these we add natural minerals: glauconite — a source of potassium, silicon and phosphorus — and dolomite, for deacidifying the soil and enriching it with calcium and magnesium. There are no synthetic additives: nutrition and structure come from natural raw materials and biotechnology.
Is sapropel the same as peat?
No. Peat is a bog formation, whereas sapropel is lake-bottom sediment formed from the remains of aquatic vegetation, plankton and peat. Sapropel has higher biological activity: humic acids, amino acids, vitamins B, C, E and D, enzymes. That is why it works as a fertilizer, as a biostimulant and as a soil improver.
How do your humic acids differ from coal-derived ones?
Most of the world's humic acids are produced from brown coal — leonardite. In peat and sapropel the humic acid molecules are considerably lighter (about 5 times lighter in peat and 2.5 times lighter in sapropel), so they penetrate into the plant and the soil faster. Processing peat and sapropel also requires less chemistry than processing coal.
What is bio-soil?
A ready mix based on sapropel, peat vermicompost and glauconite with the addition of dolomite, enriched with macro- and micronutrients. We introduce mycorrhizal fungi and beneficial microorganisms into it. It acts over a prolonged period and holds moisture better.
Glauconite — what does it give plants?
Glauconite is a natural mineral with potassium (6–9%), silicon (30–50%) and phosphorus (2–3%). Potassium and trace elements are released gradually, so the nutrition is not washed out by a single rain, and the mineral keeps working in the soil for several seasons. No chemical treatment is needed: the raw material is crushed and screened into fractions.
How do I order, and how do you deliver?
We ship from one canister or one bag upwards. Collection from our site and delivery by freight carriers across Russia are both possible. Call +7 (985) 718-36-25 — we will discuss volume, packaging and timing.
Contacts
Let's talk about your season
Leave a request or give us a call — we will tell you about the composition, the fractions and the prices, match a product to your crop and calculate the application rate.
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Phone +7 (985) 718-36-25
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Email info@astarte-bio.com
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Office hours Mon–Fri, 9:00–18:00 (MSK)
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Messengers WhatsApp / Telegram — on the same number