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Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils
MATOSO, Stella Cristiani Gonçalves; WADT, Paulo Guilherme Salvador; SOUZA JÚNIOR, Valdomiro Severino de; PÉREZ, Xosé Lois Otero.
  • MATOSO, Stella Cristiani Gonçalves; Instituto de Educação, Ciência e Tecnologia de Rondônia. Fundação Universidade Federal de Rondônia. BR
  • WADT, Paulo Guilherme Salvador; Fundação Universidade Federal de Rondônia. Embrapa Rondônia. BR
  • SOUZA JÚNIOR, Valdomiro Severino de; Universidade Federal Rural de Pernambuco. BR
  • PÉREZ, Xosé Lois Otero; Universidad de Santiago de Compostela. ES
Acta amaz ; 49(4): 268-276, out. - dez. 2019.
Article in English | LILACS | ID: biblio-1118930
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. (AU)
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Full text: Available Index: LILACS (Americas) Main subject: Phosphates / Oryza / Soil / Pyrolysis / Charcoal / Coffee / Amazonian Ecosystem Language: English Journal: Acta amaz Journal subject: Science Year: 2019 Type: Article Affiliation country: Brazil / Spain Institution/Affiliation country: Fundação Universidade Federal de Rondônia/BR / Instituto de Educação, Ciência e Tecnologia de Rondônia/BR / Universidad de Santiago de Compostela/ES / Universidade Federal Rural de Pernambuco/BR

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Full text: Available Index: LILACS (Americas) Main subject: Phosphates / Oryza / Soil / Pyrolysis / Charcoal / Coffee / Amazonian Ecosystem Language: English Journal: Acta amaz Journal subject: Science Year: 2019 Type: Article Affiliation country: Brazil / Spain Institution/Affiliation country: Fundação Universidade Federal de Rondônia/BR / Instituto de Educação, Ciência e Tecnologia de Rondônia/BR / Universidad de Santiago de Compostela/ES / Universidade Federal Rural de Pernambuco/BR