| Registro completo |
| Provedor de dados: |
Rev. Bras. Ciênc. Solo
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| País: |
Brazil
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| Título: |
Ammonia volatilization of urea in the out-of-season corn
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| Autores: |
Pereira,Hamilton Seron
Leão,Anabelisa Ferreira
Verginassi,Adriana
Carneiro,Marco Aurélio Carbone
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| Data: |
2009-12-01
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| Ano: |
2009
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| Palavras-chave: |
Nitrogen
Nitrogen fertilization
Slow release
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| Resumo: |
The aim of this study was to evaluate the N losses due to volatilization at different rates of common urea, polymer coated urea and urease inhibitor-treated urea in the out-of-season corn, using semi-open static collectors. The treatments consisted of N levels on side-dressing fertilization with urea in different treatments: (a) control (without N), (b) urea 40 kg ha-1 N, (c) urea 80 kg ha-1 N, (d) polymer coated urea 40 kg ha-1 N, (e) polymer coated urea 80 kg ha-1 N and (f) urea with the urease inhibitor (UI) N 80 kg ha-1 N. The results showed that the treatments with polymer coated urea and with urease inhibitor-treated urea reduced the volatilization of N around 50 % compared to common urea, either in the first and the second N side-dressing fertilizations. Thus, they demonstrate that the polymer coat and the urease inhibitors were effective in reducing the volatilization of urea N applied in coverage, which resulted in higher productivity. There was also increasing urease activity in the treatments with application of common urea.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600017
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| Editor: |
Sociedade Brasileira de Ciência do Solo
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| Relação: |
10.1590/S0100-06832009000600017
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Ciência do Solo v.33 n.6 2009
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| Direitos: |
info:eu-repo/semantics/openAccess
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