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	Provedor de dados Scientia Agricola (2) Autor Guimarães,Gelton Geraldo Fernandes (2) Ribeiro,Caue (2) Bernardi,Alberto Carlos de Campos (1) Bortoletto-Santos,Ricardo (1) Cruz,Camila Conceição Tomé da (1) Cruz,Diego Fernandes da (1) Pereira,Elaine Inácio (1) Polito,Wagner Luiz (1) Roncato Junior,Vanderlei (1) Sato,Patrícia Suemi (1) Souza,Gilberto Batista de (1) Mais... Palavra-chave Controlled release (1) Nitrogen (1) Non-protein nitrogen (1) Plant nutrition (1) Polyurethane (1) Ruminants feed (1) Slow-release urea (1) Soil fertility (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2020 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Analysis of NH3-N Slow Release systems for fiber digestibility of low-quality forage: in vitro approach Scientia Agricola Cruz,Camila Conceição Tomé da; Pereira,Elaine Inácio; Sato,Patrícia Suemi; Guimarães,Gelton Geraldo Fernandes; Souza,Gilberto Batista de; Bernardi,Alberto Carlos de Campos; Ribeiro,Caue. ABSTRACT: Urea is a common non-protein supplement used in ruminant feed; however, excessive consumption may lead to poisoning by NH3. Although the slow release of urea into the rumen has shown to be an essential aspect for ruminant feed, to date only a few studies have addressed this matter. In this study we examined the influence of five different NH3-N slow release systems based on clay-urea nanocomposites on the fiber digestibility of low-quality forage (sugarcane straw) in vitro. Physical properties of nanocomposites were evaluated and their effects on digestibility were tested in vitro using pristine urea as a positive control (level of 1 % of DM of sugarcane straw sample) and sugarcane (with no additives) as a negative control. Ammonia release and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Slow-release urea; Ruminants feed; Non-protein nitrogen. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000500401 Biodegradable oil-based polymeric coatings on urea fertilizer: N release kinetic transformations of urea in soil Scientia Agricola Bortoletto-Santos,Ricardo; Guimarães,Gelton Geraldo Fernandes; Roncato Junior,Vanderlei; Cruz,Diego Fernandes da; Polito,Wagner Luiz; Ribeiro,Caue. ABSTRACT: Polymer coatings are used to control the rate of release of plant available nutrients from fertilizers as well as to reduce nutrient losses such as ammonia (NH3) volatilization. Although the literature presents several examples of materials used to coat urea, little is known about nitrogen (N) release properties such as the mechanism involved and phenomena (e.g., pore opening) in the polymer coating. Thus, this study investigated urea release from polyurethane (PU) derived from two renewable raw materials (castor oil and soybean oil), to explain how the oil structure and coating microstructure influence release and urea-N dynamics in soil. The results demonstrated that the profile of urea release and the urea-N mineralization in the soil could be... Tipo: Info:eu-repo/semantics/article Palavras-chave: Polyurethane; Controlled release; Plant nutrition; Soil fertility; Nitrogen. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000101402 Registros recuperados: 2 Primeira ... 1 ... Última

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