Husk Ash Fertilizer
a sustainable way to recycle rice husks
Courtesy - Researchgate.com
Rice husks, which are a bi-product of rice harvesting, are often burned for fuel, but the ashes (which make up 20% of the husks’ volume) is then discarded.
This fertilizer helps the soil to retain its water, and also is an important source of silica.
Gather rice husks into a small mound on a concrete surface.
Put charcoals in the middle and allow it to burn for a little while.
Once some of the husks inside have turned black, use chicken wire to make a chimney in the middle.
Pour all the husks around the chimney into a cone shape.
Allow to burn for around 8 hours, until the husks have all turned black.
Cool the husks overnight and mix with some organic fertilizer to activate.