Conventional and organic cropping systems at Suitia [in Southern Finland], 3: Microbial activity in soils

agriculture biologique agriculture extensive analyse microbiologique avena sativa biologie du sol cellulolyse cellulolysis celulolisis cereal crops cultivos de cereales ecologia microbiana extensive farming fertilidad del suelo finland finlande finlandia hordeum vulgare leys microbial ecology microbiological analysis monocultivo monoculture nitrification organic farming oxidoreductases oxidorreductasas pradera temporal prairie temporaire rotation culturale rotational cropping soil biology soil fertility soil respiration solanum tuberosum trifolium vicia