Fumigation Extraction
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Soil Microbial Biomass as an Edge Effect Indicator in Semi-Deciduous Seasonal Forest Fragments
ABSTRACT This work had the objective to evaluate the activity and microbial biomass of the soil as an indicator of edge effect in Semi-Deciduous Seasonal Forest fragments. Three fragments of different sizes (small, medium and large) located in the Southwest region of Bahia state were evaluated, in which three sampling ranges were defined in each, and soil sa
Floresta Ambient.. Publicado em: 12/09/2019
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2. Biomassa microbiana do solo.
ABSTRACT: The microbial biomass, respiration and their derivative indexes are proposed as indicators of the state and changes of the soil organic matter. This document presents basic information about these indicators and the two methodologies most used for C-microbial biomass determinations, the fumigation-incubation and the fumigation-extraction methods. T
Planaltina. Publicado em: 2011
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3. Conteudo de fosforo da biomassa microbiana de um solo cultivado com Brachiaria decumbens Stapf.
A partir do trabalho de longa duracao, em solo cultivado com Brachiaria decumbens adubada com fontes de fosforo (P) em diferentes epocas de aplicacao, um experimento foi conduzido com o objetivo de estimar, pelo metodo da fumigacao-extracao, o conteudo de P microbiano de solo. O delineamento adotado foi de blocos ao acaso com seis tratamentos e quatro repeti
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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4. Biomassa microbiana em diferentes sistemas de manejo do solo e de culturas típicas da região norte do Paraná
The objective of this work was to evaluate the soil microbial biomass (SMB) as a parameter bioindicador of changes in agroecosystem under different soil management and crop rotation systems. The SMB was examined in four different Long-term experiments: In experiment 1: with 26 year-old field experiment established consisting of four systems soil management:
Publicado em: 2008
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5. AvaliaÃÃo fungitÃxica e caracterizaÃÃo quÃmica dos Ãleos essenciais e extratos obtidos apÃs diferentes processos de extraÃÃo de Cipà Vick (Tanaecium Nocturnum) e JoÃo Brandim (Piper Piscatorum) / Evaluation of fungitoxic activity and chemical characterization of the essential oils obtained after different processes of extraction of cipà vick (Tanaecium nocturnum) and joÃo-brandim (Piper piscatorum).
The chemical characterization by IR, GC-MS and GC-FID of essential oils and extracts obtained from Piper piscatorum and Tanaecium nocturnum, plant species native to the state of Acre, by different extraction processes and the evaluation of the toxicity to Aspergillus flavus were performed. The study involved four experiments. In the first, the efficiency of
Publicado em: 2007
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6. Doses de nitrogênio e seu efeito nos indicadores microbiológicos de qualidade de solo na cultura da cevada
The objective of this study was to evaluate the effect of different nitrogen doses and soil depths on microbial biomass carbon and nitrogen in a sandy textured Oxisol, cultivated with barley. The experiment was installed in June, 2004, in an area located at Embrapa Cerrados, Federal District, which had been cultivated with millet for three years and subseque
Publicado em: 2006
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7. Atividade e diversidade da biomassa microbiana em diferentes sistemas de manejo do solo e de culturas no norte do Estado do Parana / Activity and diversity of microbial biomass under different soil and crop management systems in the north of the state of Parana (Brazil)
The microbial biomass carbon (MB-C) and nitrogen (MB-N), basal respiration and metabolic quotient (qCO2) were evaluated in a Rhodic Eutrudox of the North Region of the State of Paraná under different soil and crop management systems. The experimental area was established in 1988/1989 at the experimental station of Embrapa Soja, Londrina, Paraná, and consis
Publicado em: 2005
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8. MÃtodos de Controle de Plantas Daninhas na Cultura do Cafeeiro e seus Efeitos na AgregaÃÃo e em FraÃÃes da MatÃria OrgÃnica do Solo / Weed Control Methods in Coffee (Coffea arÃbica L.) And Yours Effects On Soil Aggregation and Soil Organic Matter Fractions.
The coffee crop expansion in Latosol occur with high invest in varieties, fertilization, irrigation and control of insects and plant diseases. The weeds in coffee crop should be control for to avoid production loss and make easier the crop management. This work aimed to study the effect of weed control methods in coffee on soil aggregation and also on soil o
Publicado em: 2005
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9. Ecological indicators for the restoration of degraded areas in the Poço das Antas Biological Reserve, Rio de Janeiro State / Indicadores da restauração de áreas degradadas na Reserva Biológica de Poço das Antas,RJ
Mixed plantations of indigenous tree species have been widely used in the restoration of degraded Atlantic forests which had been converted to pastures. This study used ecological indicators to evaluate the status of restoration in mixed plantations at the Poço das Antas Biological Reserve, Southeastern Brazil. Study sites involved mature forests (F), 8-yea
Publicado em: 2005