Organics
Second (GUCHERT, ROUSSENQ GRANDSON, 2007, P. 24) ' ' Alone one, to be considered perfect, needs to have in its constitution: 45% of minerals, 25% of air occupying its pores, 26% of water and 5% of organic substance and microrganismos' '. The amount of present organic substance in the ground is determined by the action […]
