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Comparative effectiveness of two nitrogen sources for corn fertilization Phyton
Copperi,MZ; Mandolesi,ME; Cantamutto,MA; Ron,MM.
Corn has not only a high growth potential and a great capacity of biological response to suitable crop management but also may contribute to a better match of crops with environmental offer in Argentina. Nitrogen (N) fertilization must make provision for eventual N losses, and fertilization strategies must be designed so as to minimize their global incidence. The diferent quick-release N sources show similar efciencies when they are incorporated, but in surface applications, sources that contain little or no amidic N have a better performance than urea (U). The objective of this paper was to make an evaluation of corn response to N applied in V6 without incorporation, using two different solid N sources. A field experiment was carried out during 2004, in a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fertilizer technology; Nitrogen recovery; Substitution value.
Ano: 2013 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572013000100014
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Effect of fertilization with fluid swine slurry on production and nutritive value of Tifton 85 R. Bras. Zootec.
Vielmo,Hernan; Bona Filho,Amadeu; Soares,André Brugnara; Assmann,Tangriani Simioni; Adami,Paulo Fernando.
The objective of this study was to evaluate the effect of different doses of liquid swine slurry on dry matter accumulation rate and nutritive values (crude proten and neutral detergent fiber) of Tifton 85 grass pasture cultivated in southwestern Paraná from October 2005 to March 2006. It was used a complete random experimental design in a 4 x 4 factorial scheme composed of four doses of swine slurry in the plots (0, 80, 160 and 320 m³/ha) and four consecutive cuts in the subplots of the pasture. It was carried out two applications, one in the beginning of the experiment and other after 80 days. Cuts were performed every time pasture height was 40 cm. There was a dose versus cut interaction for all variables. Swine slurry promoted increase on dry matter...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynodon spp; Crude protein; Dry matter production; Neutral detergent fiber; Nitrogen recovery; Nitrogen use efficiency.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100009
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Enzymatic Hydrolysis of Yellowfin Tuna (Thunnus albacares) By-Products Using Protamex Protease ArchiMer
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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Yield and nitrogen recovery of wheat plants subjected to urea application with or without a urease inhibitor in the absence of irrigation Ciencia e Investigación Agraria
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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