3.2. SBE-based bio organic fertilizer
Organic fertilizers are naturally occurring fertilizers or naturally
occurring mineral deposits. In practice, organic fertilizers usually
include mineral-based fertilizers as well, such as greensand or
rock phosphate which is naturally occurring too. Organic fertilizer
is produced naturally or via natural biological processes such as
composting. The majority of nitrogen supplying organic fertilizers
contain insoluble nitrogen and act as a slow-release fertilizer. SBE
which is a naturally occurring montmorillonite/bentonite clay containing
mineral deposits that is mined and physically treated into
powder form without using chemicals. Hence, they can be considered
organic. By co-composting SBE with other naturally occurring
organic materials such as agricultural by-products and oil palm
biomass, the composted finished products can still be considered
as organic fertilizers.