Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Infoteca-e (18) OceanDocs (1) Open Agri (1) AgEcon (1) ArchiMer (1) Scientia Agricola (1) Mais... Autor GASPAROTTO, L. (4) SHIFT PROJECT ENV 23 (Manaus-AM). (3) BAUCH, J. (2) LIEBEREI, R. (2) RIBEIRO, J. F. (2) ARAUJO, R. C. (1) ARAUJO, R. da C. (1) BUENO, N. (1) Binswanger, H.P. (1) CAMARGO FILHO, S. T. (1) CANTO, A. C. : BRIENZA JÚNIOR, S. : CORRÊA, M. P. F. (1) CASTILHO, A. F. (1) CORDEIRO, G. G. (1) DIAS, P. F. (1) DUNISCH, O. (1) FAGG, C. W. (1) FARIA, S. M. de (1) FELFILI, J. M. (1) FELIX, S. G. (1) FONSECA, C. E. L. da (1) Mais... Palavra-chave Reclamation (23) Brasil (12) Cultivo Multiplo (11) Amazonas (10) Deterioração do Solo (10) Floresta Tropical Úmida (10) Forest trees (10) Agrofloresta (9) Agroforestry (9) Essência Florestal (9) Multiple cropping (9) Environmental degradation (8) Recuperação do Solo (8) Tropical rain forest (6) Desenvolvimento Sustentável (5) Fruit trees (4) Sustainability (4) Carapa Guianensis (3) Manaus (3) Recuperação do Solo. (3) Mais... Tipo do documento Outras publicações técnicas (INFOTECA-E) (7) Documentos (INFOTECA-E) (4) Capítulo em livro técnico (INFOTECA-E) (3) Livro técnico (INFOTECA-E) (2) Séries anteriores (INFOTECA-E) (2) Conference Paper or Presentation (1) Info:eu-repo/semantics/article (1) Journal Contribution (1) Text (1) Mais... Ano 2011 (1) 2008 (1) 2007 (1) 2006 (1) 2004 (1) 2001 (2) 2000 (1) 1999 (5) 1998 (3) 1997 (2) 1996 (2) 1988 (1) 1981 (1) 1978 (1) Mais... País Brazil (19) Belgium (1) France (1) India (1) United States (1) Idioma Português (13) Inglês (8) Alemão (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 23 Primeira ... 1 2 ... Última THE ECONOMICS OF TRACTORS IN SOUTH ASIA Open Agri Binswanger, H.P.. Palavras-chave: Economics; Manpower; Threshers; Cropping patterns; Taxes; Investment; Reclamation; Field preparation; Statistics; Yields. Ano: 1978 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3924 Sequencing Renewables: Groundwater, Recycled Water, and Desalination AgEcon Roumasset, James A.; Wada, Christopher. Optimal recycling of minerals can be thought of as an integral part of the theory of the mine. In this paper, we consider the role that wastewater recycling plays in the optimal extraction of groundwater, a renewable resource. We develop a two-sector dynamic optimization model to solve for the optimal trajectories of groundwater extraction and water recycling. For the case of spatially increasing recycling costs, recycled water serves as a supplemental resource in transition to the steady state. For constant unit recycling cost, recycled wastewater is eventually used as a sector-specific backstop for agricultural users, while desalination supplements household groundwater in the steady state. In both cases, recycling water increases welfare by shifting... Tipo: Conference Paper or Presentation Palavras-chave: Renewable resources; Dynamic optimization; Groundwater allocation; Wastewater reuse; Recycling; Reclamation; Water quality; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q25; Q28; C6. Ano: 2011 URL: http://purl.umn.edu/103753 Gypsum-saturated water to reclaim alluvial saline sodic and sodic soils Scientia Agricola Silveira,Karien Rodrigues da; Ribeiro,Mateus Rosas; Oliveira,Luiz Bezerra de; Heck,Richard John; Silveira,Rachel Rodrigues da. Inadequate management of soil and irrigation water contribute to soil degradation, particularly in the alluvial areas of Northeast Brazil, where salinity and sodicity are already common features. This study evaluates the effects of the addition of gypsum in the irrigation water on physical and chemical properties of soils with different levels of salinity and sodicity. Samples were collected at the Custódia irrigation area of Brazil, predominantly covered by alluvial soils. Leaching tests using simulated irrigation water classified as C3S1, and gypsum-saturated irrigation water were carried out in soil columns of 20 and 50 cm depth. Soil leaching with gypsum saturated water (T2) resulted in an increase in the amounts of exchangeable calcium and potassium,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Salt affected soils; Irrigation; Reclamation; Management. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000100010 Registros recuperados: 23 Primeira ... 1 2 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco