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| Marchesan,Enio; Grohs,Mara; Walter,Melissa; Silva,Leandro Souza da; Formentini,Tiago Constante. |
| The use of urea coated with urease inhibitor may become a useful tool for increasing the efficiency of nitrogen top-dressing in rice crop, thereby reducing nutrient losses through volatilization of NH3 (ammonia). Thus, the aim of this study was to evaluate the volatilization of NH3 and the response of rice to the use of urea coated with urease inhibitor in two cropping systems, no-tillage and conventional. For this purpose, field experiments were developed in the agricultural years 2007/2008 and 2008/2009, in UFSM in Santa Maria-RS. The design was randomized blocks in bifactorial scheme (2x5) with two sources, urea and urea + NBPT and five intervals of water intake (0; 3; 6; 9; 12 days) after application of nitrogen sources. The results of two seasons show... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rice cultivation; Urease inhibitor; Use straw in agriculture. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000300023 |
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| Souza,Ângela Rozane Leal de; Revillion,Jean Philippe Palma; Waquil,Paulo Dabdab; Belarmino,Luiz Clovis; Lanfranco,Bruno Antonio. |
| ABSTRACT: Rice is the basis of diet for almost half of the world population, and its culture is one of the strategic agroindustrial production chains in the agribusiness environment, in both economic and social levels. Thus, the comparative analysis between the production chains of rice milled in Rio Grande do Sul (RS), Brazil, and Uruguay was mainly motivated by the interest in knowing the differences in the business environment and public policies that impact the competitiveness of this chain in both study regions. Therefore, the objective of this study was to assess the economic efficiency, competitiveness, and effects of public policies of the rice production chain of milled rice in RS (Brazil) relative to Uruguay. The data collected in this study are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agribusiness; Comparative advantages; Rice cultivation; Policy analysis matrix (PAM). |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400201 |
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