Different systems of soil cultivation within the crop rotation in relation to the cereal and sugar beet yields

abonos nitrogenados application rates beta vulgaris biomasa biomass biomasse cambisol cambisoles cambisols cero-labranza contenido de materia seca crop yield cultivos de invierno cultivos de primavera culture d'hiver culture de printemps dose d'application dry matter content engrais organique essai hordeum vulgare labranza nitrogen fertilizers organic fertilizers pruebas rendement des cultures rendimiento de cultivos rotation culturale rotational cropping spring crops tillage travail du sol trials triticum aestivum winter crops zero tillage