Data/hora: 03/06/2024 05:30:03

Provedor de dados: | 86
País: | Brazil
Título: | Additives incorporated into urea to reduce nitrogen losses after application to the soil
Autores: | Rech,Ioná; Polidoro,José Carlos; Pavinato,Paulo Sérgio.
Data: | 2017-03-01
Ano: | 2017
Palavras-chave: | Ammonia volatilization; Leaching; NBPT; Nitrogen fertilizers; Urease inhibitors.
Resumo: | Abstract: The objective of this work was to develop urea-based fertilizers with internal incorporation of urease inhibitors and other additives in the granule. The effects of the incorporation of NBPT, copper (Cu+2), boric acid (H3BO3), elemental sulphur (Sº), and a clay mineral from the zeolite group in powder urea - with ten different combinations of these additives - were evaluated as to N losses by volatilization and leaching. The losses in laboratory-developed formulations were compared with those of commercial fertilizers coated with the same additives (Super N, FH Nitro Mais, and FH Nitro Gold). The evaluations were made in greenhouse conditions, using a Ultisol accommodated in PVC columns. Nitrate and ammonium leaching was evaluated in the solution percolated through the soil columns. Ammonia volatilization was measured with a semi-open static chamber. The incorporation of urease inhibitors (NBPT, H3BO3, and Cu+2) into the urea granules was efficient to reduce N volatilization. Ammonia volatilization in the laboratory-developed ureas was lower than in commercial fertilizers coated with the same additives, while ammonium sulfate losses by leaching were similar. The addition of zeolite does not reduce N volatilization. Mineral N leaching in the soil profile is not affected by urease inhibitors.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000300194

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/s0100-204x2017000300007
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.52 n.3 2017
Fonte: | info:eu-repo/semantics/openAccess