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| Espindula,Marcelo C; Campanharo,Marcela; Dias,Jairo R. M; Rocha,Valterley S; Souza,Moacil A. de; Menoncin,Giovana. |
| The use of urease inhibitors and irrigation are management options to increasing the efficiency of top-dressed urea by reducing NH3 volatilization. The purpose of this study was to evaluate the productive performance and N recovery of 'BRS 254' wheat plants without irrigation after applying urea or urea+NBPT [N-(n-butyl)thiophosphoric triamide] as the top dressing. The experiment was carried out in Viçosa, MG, Brazil, between May and September of 2008 using a complete randomized block design with a 2×6+1 factorial arrangement of the following treatments: 1) urea or urea+NBPT, 2) six periods without irrigation (0, 48, 96, 144, 192 or 240 h after applying the top-dressing fertilizer), and 3) a control without N; there were four replications. The data were... |
| Tipo: Journal article |
Palavras-chave: Triticum aestivum; Nitrogen fertilization; Nitrogen recovery; Volatilization of NH3. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000200014 |
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| Nguyen, Thi-my-huong; Sylla, Khalifa Serigne Babacar; Randriamahatody, Zo; Donnay-moreno, Claire; Moreau, Jacques; Luyen Thi Tran,; Berge, Jean-pascal. |
| Long-term proteolysis of tuna by-products (head, viscera and tail) by the wide spectrum protease Protamex has been investigated and compared. After hydrolysis, two fractions (soluble aqueous phase and insoluble sludge) were collected. Chemical compositions of each fraction and molecular mass distributions of soluble peptides were determined. Degrees of hydrolysis obtained after 12 h of hydrolysis of head, viscera and tail were 32.3, 16.8 and 22.2 %, respectively. Nitrogen recovery in the soluble fractions was 73.6 % for the head, 82.7 % for the viscera and 85.8 % for the tail. Lipid distribution indicated that the majority of lipids remained in the sludge. Such proteolysis appears useful for the production of very different fractions: one rich in peptides... |
| Tipo: Text |
Palavras-chave: Tuna; By-products; Proteolysis; Nitrogen recovery; Fish protein hydrolysates. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00030/14142/14042.pdf |
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