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Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils Acta Amazonica
MATOSO,Stella Cristiani Gonçalves; WADT,Paulo Guilherme Salvador; SOUZA JÚNIOR,Valdomiro Severino de; PÉREZ,Xosé Lois Otero.
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian soils; Coffee husk; Rice husk; Pyrolysis; Triple superphosphate; Biochar quality.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000400268
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