[Horse bean growing: Strategies for minimizing of N-loss and maximizing of the effect of the preceding crop]

agriculture biologique avena sativa azote brassica alba catch cropping crop yield cultivation cultivo cultivo intermedio cultivo mixto cycling espacement espaciamiento fertilidad del suelo hordeum vulgare leaching lessivage du sol lolium perenne mixed cropping nitrogen nitrogen content organic farming pratique culturale rendement des cultures rendimiento de cultivos soil fertility spacing teneur en azote vicia faba