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| Registros recuperados: 101 | |
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| SILVA, K. da; PEPE, K. B. F.; TÚLIO, R. H.; MARCONDES, L. C.; RACHWAL, M. F. G.; ZANATTA, J. A.. |
| Os microrganismos do solo são responsáveis por diversos proces- sos essenciais para a manutenção dos ecossistemas. Dependendo das condições, os solos podem emitir ou absorver óxido nitroso (N2 O) e metano (CH4 ) e reduzir as emissões de dióxido de carbono (CO2 ), (Serrano-Silva et al., 2014), que são gases responsáveis pelo aumento de temperatura global, conhecidos como gases de efeito estufa (GEE). Entre os GEEs, o CO2 é o mais abundante gás na atmosfera, seguido pelo CH4 , no entanto, este último pos- sui potencial de eficiência radiativa 26 vezes maior que o CO2 (Stocker, 2013), sendo responsável por aproximadamen- te 16% do aquecimento atmosférico (Aydin et al., 2010; Serrano-Silva et al., 2014). Fontes naturais de emissão de metano representam 40%,... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Bactéria metanotrófica; Bacteriologia do Solo; Metano. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1125663 |
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| ZANATTA, J. A.; VIEIRA, F. C. B.; BRIEDIS, C.; DIECKOW, J.; BAYER, C.. |
| Management systems to improve soil quality are essential for agricultural and environmental sustainability. We assessed the quality of soil management systems applied to a subtropical Acrisol in terms of the carbon management index (CMI), the stratification ratio for total organic carbon (SR-TOC) and light fraction of organic matter (SR-LF). In addition, we examined their relationship to chemical, physical and biological soil quality indicators, as well as to maize yield. The study was conducted on a long-term experiment (18 years) in southern Brazil involving two different systems [no tillage (NT) and conventional tillage (CT)], two cropping systems [black oat/maize (O/M) and black oat + vetch/maize + cowpea (OV/MC)] and two nitrogen fertilizer rates for... |
| Tipo: Artigo de periódico |
Palavras-chave: Conservation agriculture; No-till; Quality indicator; Agricultura conservativa; Carbono; Cropping systems; Carbon. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114374 |
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| LAMMEL, D. R.; BARTH, G.; OVASKAINEN, O.; CRUZ, L. M.; ZANATTA, J. A.; RYO, M.; SOUZA, E. M. de; PEDROSA, F. O.. |
| Background: pH is frequently reported as the main driver for prokaryotic community structure in soils. However, pH changes are also linked to ?spillover effects? on other chemical parameters (e.g., availability of Al, Fe, Mn, Zn, and Cu) and plant growth, but these indirect effects on the microbial communities are rarely investigated. Usually, pH also co-varies with some confounding factors, such as land use, soil management (e.g., tillage and chemical inputs), plant cover, and/or edapho-climatic conditions. So, a more comprehensive analysis of the direct and indirect effects of pH brings a better understanding of the mechanisms driving prokaryotic (archaeal and bacterial) community structures. Results: We evaluated an agricultural soil pH gradient (from 4... |
| Tipo: Artigo de periódico |
Palavras-chave: Sub-tropical soil; 16S rRNA; Illumina sequencing; Ecologia microbiana; Solo sub tropical; Ph; Bactéria; Química do Solo; Microbial ecology; Soil chemistry; Archaea. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099575 |
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| Registros recuperados: 101 | |
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