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Humidity and Temperature: The Two Environmental Culprits Behind Fertilizer Caking

2025-06-24


Summary:

Humidity and temperature in the storage environment are the two primary culprits behind fertilizer caking. Humidity provides the source of moisture. When the air humidity exceeds the fertilizer's critical hygroscopic point, the fertilizer begins to absorb moisture, causing its surface to dissolve. Temperature drives this process: during the day, as ambient temperatures rise, particles on the surface of the fertilizer heap absorb heat, prompting internal residual moisture to migrate toward the surface and evaporate. At night, as temperatures drop, this moisture—rich in nutrients—condenses again between the particles, setting off a repeated cycle of dissolution. - Crystallization cycles lead to the rapid formation and hardening of clumps. Therefore, it is crucial to control the temperature and humidity of the storage environment. Keeping the warehouse cool, dry, and well-ventilated can greatly enhance the effectiveness of anti-caking agents and extend the period during which fertilizers remain loose and easily stored.