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Provedor de dados:  Acta Amazonica
País:  Brazil
Título:  Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils
Autores:  MATOSO,Stella Cristiani Gonçalves
WADT,Paulo Guilherme Salvador
SOUZA JÚNIOR,Valdomiro Severino de
PÉREZ,Xosé Lois Otero
Data:  2019-12-01
Ano:  2019
Palavras-chave:  Amazonian soils
Coffee husk
Rice husk
Pyrolysis
Triple superphosphate
Biochar quality
Resumo:  ABSTRACT Phosphorus (P) is one of the nutrients that most limits agricultural productivity, especially in tropical soils. Enriched biochar has been proposed to increase the bioavailability of P and other nutrients in the soil. Thus, the objective of this study was to evaluate the availability of P in phosphate biochar (composed of biomass and soil) as a function of the triple superphosphate mixture before and after the pyrolysis process. We produced eight types of enriched biochar via pyrolysis by combining sandy or clayey soil with rice or coffee husk, and by adding triple superphosphate before or after pyrolysis. The heating of the phosphate fertilizer during the pyrolysis process resulted in a higher crystallinity of the phosphates, lower content of labile fractions of P and lower content of available P in phosphate biochars than when the superphosphate was added after pyrolysis.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000400268
Editor:  Instituto Nacional de Pesquisas da Amazônia
Relação:  10.1590/1809-4392201803852
Formato:  text/html
Fonte:  Acta Amazonica v.49 n.4 2019
Direitos:  info:eu-repo/semantics/openAccess
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