Manufacturer · GOST 4568-95, GOST 4145-74
We produce and supply potassium chloride, potassium sulfate, potassium magnesium sulfate and potassium salt. Direct factory supplies — no middlemen, with full documentation package.
K₂O content in potassium chloride
K₂O content in potassium sulfate
minimum order quantity
dispatch time from warehouse
GOST 4568-95 — potassium chloride
GOST 4145-74 — potassium sulfate
We produce 4 types of potassium fertilizers. Direct factory shipments worldwide.
The most widespread and economical potassium fertilizer. Contains 60% K₂O — maximum among standard potassium forms. The chlorine content is harmless to most field crops when applied in autumn — it leaches out of the root zone before spring.
Chlorine-free potassium fertilizer for chlorine-sensitive crops. Contains 18% sulfur — dual nutrition in one product. Indispensable for potatoes (increases starch content), grapes (improves sugar accumulation) and onions (reduces hollow bulb formation).
Triple fertilizer K + Mg + S in one granule. Ideal for light sandy and loamy soils poor in magnesium and potassium. Magnesium participates in chlorophyll synthesis — its deficiency manifests as interveinal chlorosis. Reduces the need for separate magnesium fertilizer applications.
The most affordable potassium fertilizer — a blend of potassium chloride with ground sylvinite. Sodium in the composition benefits beet crops, increasing their yield. Applied exclusively under autumn tillage to allow sodium to leach from the root zone before sowing.
Choose the optimal fertilizer type by crop, soil type and chlorine tolerance.
| Parameter | Potassium Chloride | Potassium Sulfate | K-Mg Sulfate | Potassium Salt 40% |
|---|---|---|---|---|
| K₂O, % | 60 | 50 | 29 | 40 |
| S, % | — | 18 | 17 | — |
| Mg, % | — | — | 9 (MgO) | — |
| Chlorine | up to 46.5% | ≤ 1% | ≤ 3% | up to 46% |
| Chlorine-sensitive crops | no | yes | yes | no |
| Application timing | autumn (basal) | autumn / spring / top-dressing | autumn / spring | autumn only |
| Price | Contact us | Contact us | Contact us | Contact us |
| Min. order, t | 1 | 1 | 1 | 1 |
| Standard | GOST 4568-95 | GOST 4145-74 | GOST 7858-2016 | GOST 56830-2015 |
Potassium regulates water exchange, increases frost resistance and disease tolerance. Especially important in dry regions and on light soils.
Wheat, barley, rye. Potassium chloride under autumn tillage 80–120 kg K₂O/ha. Increases frost resistance and resistance to lodging.
Chlorine-sensitive. Potassium sulfate or K-Mg sulfate — 120–180 kg K₂O/ha. Potassium increases starch content, storage quality and resistance to blight.
Sunflower, rapeseed. Potassium chloride under primary tillage. Rapeseed — together with sulfur-containing forms (potassium sulfate).
Potassium salt 40% or potassium chloride in autumn — 140–180 kg K₂O/ha. Sodium from potassium salt additionally stimulates beet growth.
Potassium sulfate — 80–120 kg K₂O/ha. Chlorine is contraindicated. Potassium improves sugar accumulation, berry colour and disease resistance.
Cucumbers, tomatoes, onions, carrots. Chlorine-free forms (potassium sulfate) for greenhouse production. Potassium improves flavour and shelf life.
Peas, soybeans, alfalfa. K-Mg sulfate — optimal for legumes on light soils. Magnesium improves nitrogen fixation by rhizobacteria.
Potassium chloride or K-Mg sulfate — 2–3 times per season in small doses. Potassium increases foliage density and frost resistance of grasses.
years producing potassium fertilizers
types of potassium fertilizers always in stock
K₂O in potassium chloride — maximum concentration
partner farms buy potassium fertilizers regularly
We sell directly from the factory with no trade mark-up. The difference from market intermediary prices is 8–12% in the buyer's favour. Especially noticeable for large autumn orders.
Our in-house laboratory controls K₂O, chlorine, moisture and granulometry of each batch. A quality certificate is issued with every shipment and accepted for agricultural subsidy applications.
Potassium fertilizers are mainly applied in autumn. We accept pre-orders from August — fixing the price and reserving volume for your seasonal requirement.
Trucks from 1 tonne, rail wagons from 60 tonnes. Delivery worldwide. Big bags 500–1000 kg, 50 kg bags, bulk.
Submit a request — our manager will send the current price list for potassium chloride, potassium sulfate and potassium magnesium sulfate with delivery cost calculation.
Fill in the form — we will respond within 30 minutes
The chlorine in potassium chloride (up to 46.5%) inhibits starch synthesis in potato tubers — reducing starch content and storage quality. In grapes, excess chlorine slows berry ripening and reduces sugar accumulation. Onions, cucumbers, tobacco and citrus fruits are also sensitive to chlorine. For these crops, potassium sulfate (Cl ≤ 1%) or potassium magnesium sulfate (Cl ≤ 3%) is used. Exception — autumn application of potassium chloride under potatoes: over winter the chlorine leaches out of the root zone and has no harmful effect.
Potassium chloride and potassium salt are applied in autumn under tillage — this allows chlorine to leach from the root zone before spring. On heavy clay loam soils spring application of potassium chloride is also possible. Potassium sulfate and potassium magnesium sulfate can be applied in spring as they contain no harmful chlorine. For in-season top-dressing, water-soluble forms are used (potassium sulfate). On light sandy soils, split applications are preferred over a single dose, as potassium leaches readily to lower horizons.
Light sandy and loamy soils are poor not only in potassium but also in magnesium. Magnesium deficiency manifests as interveinal leaf chlorosis and reduces yields by 15–25%. Potassium magnesium sulfate simultaneously corrects K and Mg deficiency — it contains 29% K₂O, 9% MgO and 17% S. This eliminates the need for separate magnesium fertilizer applications. Chlorine content in potassium magnesium sulfate is minimal (≤ 3%), broadening the range of applicable crops. On heavy soils with normal magnesium content, potassium chloride is more economical.
Minimum order for self-pickup — 1 tonne. Truck delivery — from 3 tonnes. Rail wagon — from 60 tonnes. Dispatch time after payment — 5 business days; from warehouse stock — 2–3 days. Delivery worldwide. For the autumn season we recommend placing pre-orders in July–August: price is fixed and priority dispatch is guaranteed.
Each batch is supplied with: GOST compliance certificate (GOST 4568-95 for potassium chloride, GOST 4145-74 for potassium sulfate, GOST 7858-2016 for potassium magnesium sulfate); declaration of conformity TR EAEU 041/2017; sanitary-epidemiological conclusion; quality passport with K₂O, moisture and granulometry analysis results for the specific batch. The full documentation package is accepted for government agricultural subsidy applications.
Potassium fertilizers are the third key element of mineral plant nutrition. Potassium participates in regulating cell osmotic pressure, activates more than 60 enzymes, increases frost resistance and drought tolerance. Potassium deficiency causes leaf edge browning ("scorch"), stem weakness, reduced product quality and increased disease susceptibility.
AgroChemProm produces a complete range of potassium fertilizers: potassium chloride (K₂O 60%, GOST 4568-95), potassium sulfate (K₂O 50%, GOST 4145-74), potassium magnesium sulfate (K₂O 29% + MgO 9%, GOST 7858-2016), potassium salt 40% (GOST 56830-2015). All products are certified and undergo in-house laboratory quality control.
Potassium chloride is the most widespread and economically accessible potassium fertilizer. It contains 60% K₂O in water-soluble form. Applied under autumn tillage for cereals, oilseeds, fodder and industrial crops. The chlorine component leaches from the root zone over winter and has no harmful effect on crops when applied in autumn.
Potassium chloride accounts for more than 80% of total potassium fertilizer consumption globally. Its economic efficiency per unit of K₂O cost is significantly higher than other forms.
For potatoes, grapes, vegetables and fruit crops that cannot tolerate chlorine, potassium sulfate (K₂SO₄) is used. It contains 50% K₂O and 18% sulfur — dual nutrition in one fertilizer. Sulfur improves rapeseed and crucifer quality and increases protein content in grain.
Potassium magnesium sulfate is the optimal choice for light sandy soils poor in both potassium and magnesium. Three nutritional elements (K + Mg + S) in one granule reduce application costs and eliminate the need for a separate magnesium fertilizer. We supply potassium magnesium sulfate worldwide by truck and rail.
To place an order, submit a request on the website or call us. Specify the fertilizer type, volume in tonnes and delivery timeline. Our manager will send a commercial offer with the manufacturer's price and delivery calculation within 30 minutes.
For farms planning autumn potassium application, we recommend placing pre-orders in July–August. This fixes the price during the low-demand period and guarantees fertilizer availability by the required date. For orders of 50+ tonnes per season, individual pricing programmes are available.