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Registros recuperados: 129 | |
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Sivila, R.; Hervé, Dominique. |
Se estudio la poblacion microbina en una rotacion de cultivos con descanso, comun en el Altiplano Central boliviano. Se determino la presencia y densidad de cuatro grupos taxonomicos de microorganismos: bacterias; hongos, actinomicetos y esporas de las micorrizas arbusculares en el suelo rizosferico de cuatro cultivos de la rotacion (papa, quinua, cebada y avena); en las principales especies silvestres perennes (#Stipa ichu, Festuca dolichophylla, Baccharis incarum$) que colonizan las parcelas en descanso y en parcelas entre uno y mas de 20 anos de descanso. Se explora luego las relaicones entre las poblaciones de microorganismos y algunas caracteristicas del suelo: textura, materia organica (carbonato organico, nitrogeno total) y fosforo asimilable. Se... |
Tipo: Text |
Palavras-chave: MICROBIOLOGIE DU SOL; MICROORGANISME; SOL CULTIVE; POMME DE TERRE; JACHERE; MATIERE ORGANIQUE; QUINOA. |
Ano: 2001 |
URL: http://www.documentation.ird.fr/hor/fdi:010025653 |
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Marchand, A.L.; Piutti; lagacherie, B.; Soulas, G.. |
An experiment was carried out in the greenhouse in order to compare atrazine mineralization in bulk soil and maize rhizosphere at different development stages. After 4, 8 and 12 weeks, we have (1) measured the soil microbial biomass C, (2) characterized the C substrate utilization profiles of the culturable microflora, and (3) analyzed atrazine mineralization. Microbial growth was stimulated in planted soil and different C substrate utilization patterns were obtained in bulk and rhizosphere soils during the first 2 months. During this period, laboratory tests for atrazine biodegradation revealed a lower mineralization potential in bulk than in planted soil. Atrazine mineralization was stimulated to a greater extent after atrazine application in the... |
Tipo: Journal Article |
Palavras-chave: SOL CULTIVE; SCIENCE DU SOL. |
Ano: 2002 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010e224a6a8&uri=/notices/prodinra1/2010/12/ |
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Registros recuperados: 129 | |
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