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Short-term effects of organic municipal wastes on wheat yield, microbial biomass, microbial activity, and chemical properties of soil

AuthorsFranco-Otero, Victor G.; Soler-Rovira, Pedro ; Hernández, Diana; García López de Sá, Esther ; Méndez, Ana; Plaza de Carlos, César
Heat drying
Municipal solid waste
Sewage sludge
Soil microbial size and activity
Thermal drying
Issue DateFeb-2012
CitationBiology and Fertility of Soils 48: 205-216 (2012)
AbstractThe objectives of this work were to (a) investigate the short-term effects of applications of mineral fertilizer, municipal solid waste (MSW) compost, and two sewage sludges (SSs) subjected to different treatments (composting and thermal drying) on microbial biomass and activity of soil by measuring microbial biomass C, adenosine 5′-triphosphate content, basal respiration, and dehydrogenase, catalase, urease, phosphatase, β-glucosidase, and N-α-benzoyl-L-argininamide- hydrolyzing activities and (b) explore the relationships between soil microbiological, biochemical, and chemical properties and wheat yields under semiarid field conditions by principal component analysis. The additions of MSW compost, SS compost, and thermally dried SS did not affect significantly soil microbial biomass, as compared to mineral fertilization and no amendment. However, microbial activity increased in organically amended soils, probably due to the stimulating effect of the added decomposing organic matter. Changes in soil microbiological and biochemical properties showed no significant relationships with wheat yields, probably because plant growth was primarily waterlimited, as typically occurs in semiarid regions.
Description12 páginas, 3 figuras y 6 tablas.
Publisher version (URL)http://dx.doi.org/10.1007/s00374-011-0620-y
Appears in Collections:(ICA) Artículos
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