[Literature research concerning the influence of fertilization on yield, plant quality, soil and environment, 4: Ecological agriculture [biological farming, biodynamic farming]]

acide ascorbique acido ascorbico agriculture biologique ascorbic acid biological control calidad proteica compost composts contenido de materia seca control de malezas crops cultivos dry matter content lutte anti-mauvaise herbe lutte biologique organic farming plante de culture protein quality residues residuos teneur en vitamines vitamin content weed control