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| BRAGA, L. P. P.; YOSHIURA, C. A.; BORGES, C. D.; HORN, M. A.; BROWN, G. G.; DRAKE, H. L.; TSAI, S. M.. |
| For the last 150 years many studies have shown the importance of earthworms for plant growth, but the exact mechanisms involved in the process are still poorly understood. Many important functions required for plant growth can be performed by soil microbes in the rhizosphere. To investigate earthworm influence on the rhizosphere microbial community, we performed a macrocosm experiment with and without Pontoscolex corethrurus (EW+ and EW?, respectively) and followed various soil and rhizosphere processes for 217 days with sugarcane. In EW+ treatments, N2O concentrations belowground (15 cm depth) and relative abundances of nitrous oxide genes (nosZ) were higher in bulk soil and rhizosphere, suggesting that soil microbes were able to consume earthworm-induced... |
| Tipo: Artigo de periódico |
Palavras-chave: Crescimento de plantas; Minhoca; Solo; Rizosfera; Biologia do solo; Earthworms; Rhizosphere. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1067637 |
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| NAVARRETE, A. A.; DINIZ, T. R.; BRAGA, L. P. P.; SILVA, G. G. Z.; FRANCHINI, J. C.; ROSSETTO, R.; EDWARDS, R. A.; TSAI, S. M.. |
| This study focused on the effects of organic and inorganic amendments and straw retention on the microbial biomass (MB) and taxonomic groups of bacteria in sugarcane-cultivated soils in a greenhouse mesocosm experiment monitored for gas emissions and chemical factors. The experiment consisted of combinations of synthetic nitrogen (N), vinasse (V; a liquid waste from ethanol production), and sugarcane-straw blankets. Increases in CO2-C and N2O-N emissions were identified shortly after the addition of both N and V to the soils, thus increasing MB nitrogen (MB-N) and decreasing MB carbon (MB-C) in the N+V- amended soils and altering soil chemical factors that were correlated with the MB. Across 57 soil metagenomic datasets, Actinobacteria (31.5%),... |
| Tipo: Separatas |
Palavras-chave: Cana de açúcar; Microbiologia do solo; Sugarcane; Soil biology. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1018114 |
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