The dissolve time of granular fertilizer depends on a lot of factors, for the fertilizer itself, it depends on the coating of the granular compound fertilizer and the formula of the granular compound fertilizer, it also depends on the granular strength of the fertilizer, usually fertilizer manufactured by irregular extrusion method can withstand greater compressive force. Some granular fertilizers are designed to be slow-released to provided a sustainable supply of nutrient to the plant. In other cases, fertilizers are designed to be release quickly in order to have instant effect on the plant.

What are the factors that affects the time it takes for granular fertilizer to dissolve?

The granule size is a factor that affects the time it takes for granular fertilizer to dissolve. Bigger granule size tends to have a long period of time to release while the small granule tends to have a faster dissolve time.

How long need to breakdown the granular fertilizer?

Temperature is also an important factor that affects the time it takes for granular fertilizer to dissolve. Higher temperature tends to promote faster dissolution, it is because of the fertilizer granule itself, also high temperature can increase the activity of the soil therefore accelerate the break down process.

What affects the breakdown of granular fertilizer?

Microbial activity, like we mentioned in the last paragraph, when the soil is involved with sufficient microbial activity, it contributes to the overall speed of breaking down.

How does PH value affect the breakdown time of NPK compound fertilizer?

Soil conditions: The PH value of the soil affects the speed of granular compound fertilizer breaking down. Some acid-based fertilizer tend to break down faster when the soil has a positive PH value while the alkaline based fertilizer tend to break down faster when the soil has a negative PH.

How does Moisture contribute to the dissolutions of NPK compound fertilizer?

The amount of moisture can affect the speed of dissolution, sufficient water supply is important for the breakdown of NPK granular fertilizer, poor irrigation will slow down the speed of dissolution and nutrient availability.

Please List the factors that affect the granular fertilizer to dissolve.

So, in conclusion, there are a lot of factors that contribute to the dissolution of the Granular NPK compound fertilizer. Some granular fertilizer only takes hours to dissolve, some NPK granular fertilizer formula designed to release the nutrient slowly to supply consistent nutrient to the plant therefore it takes 1-3 month to dissolve.  

This Article is authored by Full-time technical writer Richard Zhu