Slow & Controlled Release Fertilizer
The release mechanism of CRF
Soil water penetrates into the granule through the CRF coating pores
The solid nutrients inside are gradually dissolved into easily absorbed liquid form
The liquid nutrients are released into the soil slowly and continuously
The release rate depends on the soil temperature. The higher soil temperature, the faster the nutrient releases. The soil moisture, Ph and the activities of soil microorganisms have little impact on the fertilizer nutrient release. Our Controlled Release Fertilizers Include PCU and CRF; PSCU is polymer sulfur coated urea, and it is slow release fertilizer, PCU is polymer coated urea, and PCF is controlled release NPK coated in one granular.
Polymer and sulfur
coated urea (PSCU)
Urea granules are coated with 1% polymer and another coat of sulfur. Polymer coating makes the SCU coat more flexible and durable.
Granules of compound NPK are coated with polymer to achieve gradual release of the nutrients, using advanced granule-coating techniques.
Urea granules are coated with a biodegradable polymer, using advanced membrane coating technology which enables the slow release to increase fertilizer utilization rate.