Atividade respiratória da microbiota e conteúdo de glicose em resposta à adição de fósforo em solo de Cerrado

Ferreira, Adão de Siqueira; Oliveira, Reinaldo Silva de; Santos, M. Amélia; Borges, Elias Nascentes

doi:10.1590/s0100-06832008000500010

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…The metabolic quotient (qCO 2 ) was calculated as the ratio of basal respiration to C from the microbial biomass (Anderson & Domsch, 1990). Total Glucose (TG) was determined according to the procedure described by Ferreira et al (2008). β−glucosidase and phosphatase (acid and alkaline) activity was analyzed by methods proposed by Eivazi & Tabatabai (1988) and Tabatabai & Bremner (1969), respectively.…”

Section: Methodsmentioning

confidence: 99%

Microbial and enzymatic activity in soil after organic composting

Vinhal-Freitas

Wangen

Ferreira

et al. 2010

Rev. Bras. Ciênc. Solo

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Microbial activity and biochemical properties are important indicators of the impact of organic composting on soil. The objective of this study was to evaluate some indicators of soil microbial and biochemical processes after application of compost (household waste). A Typic Acrustox, sampled at a depth of 10 cm under Cerrado biome vegetation, was evaluated in three treatments: control (soil without organic compost amendment) and soil with two doses of domestic organic compost (10 and 20 g kg -1 soil). The following properties were evaluated: released C (C-CO 2 ): microbial respiration 15 days after incubation; microbial biomass C (MBC); total glucose (TG); metabolic quotient (qCO 2 ); and enzyme activity of β− β− β− β− β−glucosidase and acid and alkaline phosphatase. The application of household compost, at doses of 10 and 20 g kg -1 Typic Acrustox, resulted in significant gains in microbial activity, organic C and C stock, as evidenced by increased MBC and TG levels. On the other hand, qCO 2 decreases indicated greater microbial diversity and more efficient energy use. The addition of compost, particularly the 20 g kg -1 dose, strongly influenced the enzyme β− β− β− β− β−glucosidase and phosphatase (acid and alkaline). The β− β− β− β− β−glucosidase activity was significantly increased and acid phosphatase activity increased more than the alkaline. The ratio of β− β− β− β− β−glucosidase to MBC was greater in the control than in the composted treatments which suggests that there were more enzymes in the control than in the substrate or that the addition of compost induced a great MBC increase.Index terms: Cerrado, Soil respiration, microbial biomass, glucose, phosphatase, β− β− β− β− β−glucosidase.(

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Section: Methodsmentioning

confidence: 99%

Microbial and enzymatic activity in soil after organic composting

Vinhal-Freitas

Wangen

Ferreira

et al. 2010

Rev. Bras. Ciênc. Solo

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“…These results highlight the complexity of plant responses to nutrient enrichment in the Cerrado, and suggest that the negative responses of native plants are not necessarily due to competition with invasive or other native plants, but may also be due to competition with soil microbes (cf. Ferreira et al 2008).…”

Section: Native and Alien Species Are Limited By Different Nutrientsmentioning

confidence: 99%

Native and alien herbaceous plants in the Brazilian Cerrado are (co-)limited by different nutrients

et al. 2015

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Background and aims The diverse flora of the Brazilian Cerrado is threatened by agricultural expansion, nutrient enrichment and invasion of alien plants. We performed a fertilization experiment to investigate the nature of nutrient limitation in Cerrado vegetation, and evaluate whether native and alien invasive species are limited by the same or different nutrients. Methods We applied various combinations of nutrients (phosphorus (P), nitrogen (N), and a mixture of other macro-and micro-nutrients ('cations treatment')) to six types of Cerrado vegetation. We then studied over a 3year period how these treatments affected the aboveground biomass of native forbs, native C 3 and C 4 grasses, and invasive C 4 grasses. ResultsThe full nutrient treatment (N+P+ 'cations') significantly increased total community biomass across our sites, but P alone had no effect. The nutrient treatments also affected the relative abundance of functional plant groups in the six vegetation types. P addition, either alone or in combination with other nutrients, increased the biomass of alien C 4 grasses, where present, whereas the cations treatment stimulated growth of the native C 4 grasses. Addition of N+P reduced the biomass of native C 3 grasses. Conclusions Our results indicate co-limitation by several nutrients, including P, perhaps N, and at least one other nutrient. Further research is needed to determine what the other nutrient (or nutrients) may be. Native and invasive species appear to be limited by different nutrients, with P alone stimulating growth of African C 4 grasses. This should be considered in managing both natural and invaded communities.

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“…There are several factors that influence the soil microbial activity and biomass and enzymatic activity, e.g., moisture (Gama-Rodrigues et al, 2005;Frazão et al, 2010), P concentration in soil (Ferreira et al, 2008), the soil layers (Figueiredo et al, 2007;Babujia et al, 2010), and soil organic matter (SOM) (Perez et al, 2004). There is, however, a lack of information about the behavior of microbiological and oxidizable SOM fractions under differentiated irrigation and P splitting systems.…”

Section: Introductionmentioning

confidence: 99%

Microbiological properties and oxidizable organic carbon fractions of an oxisol under coffee with split phosphorus applications and irrigation regimes

Costa

Sato

Ramos

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYPhosphorus fertilization and irrigation increase coffee production, but little is known about the effect of these practices on soil organic matter and soil microbiota in the Cerrado. The objective of this study was to evaluate the microbiological and oxidizable organic carbon fractions of a dystrophic Red Latossol under coffee and split phosphorus (P) applications and different irrigation regimes. The experiment was arranged in a randomized block design in a 3 x 2 factorial design with three split P applications (P1: 300 kg ha -1 P 2 O 5 , recommended for the crop year, of which two thirds were applied in September and the third part in December; P2: 600 kg ha -1 P 2 O 5 , applied at planting and then every two years, and P3: 1,800 kg ha -1 P 2 O 5 , the requirement for six years, applied at once at planting), two irrigation regimes (rainfed and year-round irrigation), with three replications. The layers 0-5 and 5-10 cm were sampled to determine microbial biomass carbon (MBC), basal respiration (BR), enzyme activity of acid phosphatase, the oxidizable organic carbon fractions (F1, F2, F3, and F4), and total organic carbon (TOC). The irrigation regimes increased the levels of MBC, microbial activity and acid phosphatase, TOC and oxidizable fractions of soil organic matter under coffee. In general, the form of dividing P had little influence on the soil microbial properties and OC. Only P3 under irrigation increased the levels of MBC and acid phosphatase activity.Index terms: P cycling, soil microbial activity, acid phosphatase, soil organic matter.( Adriana Rodolfo da Costa et al. RESUMO: ATRIBUTOS MICROBIOLÓGICOS E FRAÇÕES OXIDÁVEIS DO CARBONO ORGÂNICO DE LATOSSOLO CULTIVADO COM CAFEEIRO, SOB PARCELAMENTOS DE FÓSFORO E REGIMES HÍDRICOS

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Atividade respiratória da microbiota e conteúdo de glicose em resposta à adição de fósforo em solo de Cerrado

Cited by 9 publications

References 18 publications

Microbial and enzymatic activity in soil after organic composting

Microbial and enzymatic activity in soil after organic composting

Native and alien herbaceous plants in the Brazilian Cerrado are (co-)limited by different nutrients

Microbiological properties and oxidizable organic carbon fractions of an oxisol under coffee with split phosphorus applications and irrigation regimes

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