Kandungan nitrogen dan fosfor pupuk organik cair dari sludge instalasi gas bio dengan penambahan tepung tulang ayam dan tepung darah sapi

Abstract

Composting is not a new thing in the public and so many methods in composting which implemented to support composting technology. Composting is defined as biochemical process to transform organic material to manure by microorganism integrated or separated. Motivated by expanded of rumour continuing farming in safe environment, pollution, and reduction land fertility content consequence of chemical fertilizer, also about the higher of artificial fertilizer price, cause the interest of farmer and society increase to use organic fertilizer as soil nutrition in agriculture development system.