Changes in microbial biomass and community composition, and soil carbon and nitrogen pools after incorporation of rye into three California agricultural soils

agricultural soils agriculture biologique agriculture intensive azote bacteria biomasa biomass biomasse carbon carbone carbono centeno champignon cover plants cropping systems enfouissement enterrado fungi hongos hortalizas incorporation intensive farming legume microorganisme microorganismos microorganisms nematoda nitrogen organic agriculture plantas de cobertura plante de couverture respiration rotation culturale rotational cropping rye secale cereale seigle sistemas de cultivo soil soil organic matter sol sol agricole stems suelo tallo tige vegetables