Product Overview
Polyhalite (K₂Ca₂Mg(SO₄)₄·2H₂O) is a naturally occurring mineral containing four essential nutrients — potassium (14% K₂O), calcium (17% CaO), magnesium (6% MgO), and sulphur (19% S). Mined in a single geological deposit, polyhalite requires no chemical processing, making it one of the most sustainable fertilizer raw materials available. BO Fertilizer Sp. z o.o. distributes polyhalite from the world’s largest deposit in North Yorkshire, UK, providing European and global buyers with a multi-nutrient, organic-certifiable, low-chloride fertilizer input.
How Polyhalite Works
Polyhalite is a slow-release mineral that dissolves gradually over 4-8 weeks, providing sustained nutrient availability throughout the growing season. The crystal structure releases K⁺, Ca²⁺, Mg²⁺, and SO₄²⁻ ions as soil moisture penetrates the granule. This gradual release profile reduces nutrient leaching losses by up to 50% compared to conventional soluble fertilizers. The calcium component also improves soil structure and reduces aluminium toxicity in acid soils.
Key Benefits
Application Guide
Apply 200-400 kg/ha as basal dressing before planting or incorporate into soil during tillage. For potatoes: 300 kg/ha at planting. For cereals: 200 kg/ha at sowing. For oil crops (rapeseed, sunflower): 250 kg/ha pre-sowing. For pasture: 150-200 kg/ha annually. Can be blended with NPK fertilizers or applied standalone. Granular form compatible with standard spreaders.
Ideal For
Storage & Handling
Store in dry conditions under cover. Polyhalite is non-hazardous, non-flammable, and non-corrosive. Shelf life: 36 months in original packaging. Low dust formulation for comfortable handling. Standard agricultural PPE (gloves, dust mask) recommended for bulk handling.
Reviews
There are no reviews yet.