Synthetic slow-release nitrogen fertilizer

A slow-release nitrogen fertilizer made from a water-soluble nitrogen fertilizer that is chemically synthesized to make it less soluble in water.
There are two types of urea: isobutyraldehyde condensed urea (product name: IB nitrogen), which is degraded (mineralized) by hydrolysis, and acetaldehyde condensed urea (product name: CDU nitrogen), which is degraded (mineralized) mainly by microbial degradation.
When these are used as raw materials for compound fertilizers, the fertilizing effect of chisso is maintained for a long period of time. Super IB", "Good IB", and "Hyper CDU" are available for compound fertilizers with a fertilizer efficacy control function.