Efeito da biodigestão anaeróbia sobre a solubilização e a eficiência agronômica de diferentes fontes de fósforo
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Data
2001-08
Autores
Cézar, Vicente Rodolfo Santos [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Com o intuito de avaliar o efeito da biodigestão anaeróbia sobre a solubilização e a eficiência agronômica de diferentes fontes de fertilizantes fosfatados, foi desenvolvido um experimento no Departamento de Recursos Naturais/Ciência do Solo em Botucatu (SP). O estudo realizado foi dividido em duas etapas, onde a primeira constou da construção de três biodigestores e a produção de biofertilizantes enriquecidos ou não, pelas diferentes fontes de fósforo. O biofertilizante gerado foi caracterizado quimicamente em relação a sua solubilidade pelos diferentes extratores. Após a análise química, o biofertilizante foi utilizado na etapa seguinte, sendo aplicado ao solo e avaliado o Índice de Eficiência Agronômica (IEA) das fontes quanto à produção de matéria seca da parte aérea e a quantidade de fósforo nas plantas de milho, as quais foram cultivadas durante 30 dias após a emergência. Foram realizados dois cultivos consecutivos, onde as fontes de fósforo foram aplicadas apenas no primeiro cultivo, na dose de 200 mg de P kg-1 de solo...
An experiment was realized with the objective of evaluate the anaerobic disgestion effect about the solubilization and agronomic efficiency of different phosphate fertilizer. The research was realized in two phases, than the first was the construction of three reactors and the biofertilizer production. The biofertilizer generated was characterizated chemically relationship its solubility in different extractors. After the chemical analysis, the biofertilizer was used in the next phase, it being applicated into soil and it was evaluate about the agronomic efficiency of the phosphorous fonts, that dry matter production and phosphorous amount in the corn plants. The corn plants were cultivated during 30 days after its emergence. Two consecutives cultivation were realized, where the phosphorous fonts were only applicated in the first cultive (200mg P Kg-1 of soil). The study conclusions were: because some extractor solutions used in the assays doesn’t digest the organic matter present in the material, and yet, the difficult to have homogenous biofertilizer samples by reactors... (Complete abstract, click electronic access below)
An experiment was realized with the objective of evaluate the anaerobic disgestion effect about the solubilization and agronomic efficiency of different phosphate fertilizer. The research was realized in two phases, than the first was the construction of three reactors and the biofertilizer production. The biofertilizer generated was characterizated chemically relationship its solubility in different extractors. After the chemical analysis, the biofertilizer was used in the next phase, it being applicated into soil and it was evaluate about the agronomic efficiency of the phosphorous fonts, that dry matter production and phosphorous amount in the corn plants. The corn plants were cultivated during 30 days after its emergence. Two consecutives cultivation were realized, where the phosphorous fonts were only applicated in the first cultive (200mg P Kg-1 of soil). The study conclusions were: because some extractor solutions used in the assays doesn’t digest the organic matter present in the material, and yet, the difficult to have homogenous biofertilizer samples by reactors... (Complete abstract, click electronic access below)
Descrição
Palavras-chave
Digestão anaeróbica, Apatita, Fertilizantes fosfatados, Triple superphosphate, Apatite concentrate
Como citar
CÉZAR, Vicente Rodolfo Santos. Efeito da biodigestão anaeróbia sobre a solubilização e a eficiência agronômica de diferentes fontes de fósforo. 2001. xii, 91 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2001.