Heterogeneous turnover of molecular organic substances from crop soils as revealed by 13(C) labeling at natural abundance with Zea mays

amino acids carbohidratos carbohydrates cereal crops cultivos de cereales cultural soil types dynamik espectrometria glucide isotope isotopes lipide lipids markierung measurement mesure metabolism metabolisme metabolismo methode methods organic matter spectrometrie spectrometry tipos de suelos cultivables type de sol de culture zea mays