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Biochar improves fertility of a clay soil in the Brazilian Savannah: short term effects and impact on rice yield JARTS
de Melo Carvalho, Marcia Thais; Madari, Beáta Emoke; Bastiaans, Lammert; van Oort, Pepijn Adrianus Johannes; Heinemann, Alexandre Bryan; da Silva, Mellissa Ananias Soler; Maia, Aline de Holanda Nunes; Meinke, Holger.
The objective of this study was to report single season effects of wood biochar (char) application coupled with N fertilization on soil chemical properties, aerobic rice growth and grain yield in a clayey Rhodic Ferralsol in the Brazilian Savannah. Char application effected an increase in soil pH, K, Ca, Mg, CEC, Mn and nitrate while decreasing Al content and potential acidity of soils. No distinct effect of char application on grain yield of aerobic rice was observed. We believe that soil properties impacted by char application were inconsequential for rice yields because neither water, low pH, nor the availability of K or P were limiting factors for rice production. Rate of char above 16 Mg ha^(−1) reduced leaf area index and total shoot dry matter by 72...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronoomy and Crop Science; Resource use efficiency aerobic system; Carbonised biomass; Ferralsol; Nitrogen; Oryza sativa; Oxisol.
Ano: 2014 URL: http://www.jarts.info/index.php/jarts/article/view/2013081343330
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Growth of aerobic rice in the presence of biochar as soil amendment: short-term effects in a clayey Rhodic Ferralsol in the Brazilian savanna (Cerrado). Repositório Alice
CARVALHO, M. T. de M.; MADARI, B. E.; BASTIAANS, L.; VAN OORT, P.; HEINEMANN, A. B.; SILVA, M. A. S. da; MAIA, A. de H. N.; MEINKE, H..
Abstract: Increasing yields in aerobic rice systems (ARS) is a challenge in the Brazilian savannah (BS), where rice is grown under unfavourable conditions characterised by well drained and low fertile soils. Management options that could increase soil water availability and nitrogen (N) use efficiency would probably lead to higher grain yields in ARS. One promising option under consideration is the use of ?biochar?, a by-product of charcoal made of hardwood, as a soil amendment. Biochar is high in resistant (pyrogenic) carbon (70 to 80% of the material), which influences some processes in soil, depending on the amount applied and its interaction with the soil properties. Yet there are no conclusive field studies that quantify the effect of hardwood biochar...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Soil amendment; Pyrogenic C; Char; Ferralsol; Pinthosol; Oryza sativa.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/982760
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Variabilidade espacial de características químicas do solo em um Latossolo Amarelo, com utilização agrícola anterior. Repositório Alice
TEIXEIRA, W. G.; VILLANI, E. M. A..
Este trabalho teve por objetivo determinar a variabilidade especial de algumas caracteristicas quimicas do solo, em uma area com utilizacao agricola anterior.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Propriedade quimica; Brasil; Amazonas; Ferralsol; Chemical properties; Latossolo Amarelo; Solo; Uso da Terra; Land use.
Ano: 1996 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/667400
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