Data/hora: 12/06/2024 01:11:00

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 25/11/2019
Data da última atualização: | 10/06/2022
Autoria: | PUGA, A. P.; QUEIROZ, M. C. de A.; LIGO, M. A. V.; CARVALHO, C. S.; PIRES, A. M. M.; SANTOS, J. de O.; ANDRADE, C. A. de.
Afiliação: | ALINE PEREGRINA PUGA, FAPESP; MATHEUS CASTRO DE ALMEIDA QUEIROZ, IAC; MARCOS ANTONIO VIEIRA LIGO, CNPMA; CRISTINA SILVA CARVALHO, UEMA; ADRIANA MARLENE MORENO PIRES, CNPMA; JULIANA DE OLIVEIRA SANTOS MARCATTO, CNPMA; CRISTIANO ALBERTO DE ANDRADE, CNPMA.
Título: | Nitrogen availability and ammonia volatilization in biochar-based fertilizers.
Ano de publicação: | 2020
Fonte/Imprenta: | Archives of Agronomy and Soil Science, v. 66, n. 7, p. 992-1004, 2020.
ISSN: | 0365-0340
DOI: | https://doi.org/10.1080/03650340.2019.1650916
Idioma: | Inglês
Notas: | Arquivo com texto completo contém a versão publicada online, sem dados de volume e paginação.
Conteúdo: | Abstract: 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.
Palavras-Chave: | Biochar-based fertilizer; Increase defficiency; N loss; Slowrelease fertilizer.
Thesagro: | Amônia; Fertilizante; Nitrogênio.
Thesaurus Nal: | Ammonia; Biochar; Mineral fertilizers; Volatilization.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16519-1) - UPC - AP - DD -  -  -  - DIS