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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Nitrogen availability and ammonia volatilization in biochar-based fertilizers

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Autor(es):
Puga, Aline Peregrina [1] ; de Almeida Queiroz, Matheus Castro [2] ; Vieira Ligo, Marcos Antonio [1] ; Carvalho, Cristina Silva [3] ; Moreno Pires, Adriana Marlene [1] ; Santos Marcatto, Juliana de Oliveira [1] ; de Andrade, Cristiano Alberto [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Embrapa Meio Ambiente, Rodovia SP 340, Km 127, 5, Jaguariuna - Brazil
[2] Inst Agron Campinas, Ctr Solos & Recursos Ambientais, Campinas, SP - Brazil
[3] Univ Estadual Maranhao, Programa Posgrad Agroecol, Sao Luis - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: ARCHIVES OF AGRONOMY AND SOIL SCIENCE; AUG 2019.
Citações Web of Science: 1
Resumo

Increasing N use efficiency is an important strategy to intensify sustainable agriculture, optimize nutrient use, and reduce N loss to the environment via different routes. Owing to its physicochemical properties, biochar can be used as an additive to produce biochar-based fertilizers (BFs) with increased efficiency. We investigated N availability and ammonia loss from 17 BFs (3%-38% N). N availability and release from BFs were evaluated by water extraction experiments and soil column leaching. BFs (5%-10% N) had an average of 64% solubilized N after five extractions, whereas urea had 98% solubilized N. However, BFs produced with urea released N more slowly in soil, with the release rate 60% less than that of urea. Ammonia volatilization was evaluated using a 22-d experiment, where N was applied to soil surface (pH = 4.4). We compared urea, BF granulated with urea, and BF produced by coating urea granules with acidified or unacidified biochar. Compared to urea, biochar-based fertilizers granulated with urea and urea granules coated with acidified biochar significantly reduced (t-test at 5%) ammonia volatilization by 14%. The results demonstrated the potential of BFs as enhanced efficiency fertilizers. Therefore, BFs might be a good option to mitigate N loss. (AU)

Processo FAPESP: 17/02886-7 - Estabilidade do carbono do biocarvão, processo de envelhecimento no solo e efeito fertilizante de formulações com fontes minerais
Beneficiário:Cristiano Alberto de Andrade
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 15/21633-7 - Eficiência agronômica e ambiental de biocarvão enriquecido ou não com fonte mineral no fornecimento de nitrogênio.
Beneficiário:Aline Peregrina Puga
Linha de fomento: Bolsas no Brasil - Pós-Doutorado