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	Provedor de dados Scientia Agricola (5) Autor Nielsen,D.R. (5) Bacchi,O.O.S. (2) Dourado-Neto,D. (2) Frizzone,J. A. (2) Hopmans,J.W. (2) Reichardt,K. (2) Wendroth,O. (2) Clausnitzer,V. (1) Hopmans,J. W. (1) Kosugi,K.I. (1) Kutilek,M. (1) Kutílek,M. (1) Somma,F. (1) Teruel,D. A. (1) Teruel,D.A. (1) Mais... Palavra-chave Crop modeling (2) Simulation (2) Modeling (1) Regionalized variable (1) Research (1) Soil physics (1) Soil science (1) Solute transport (1) Transport processes (1) Unsaturated zone (1) Water flow (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 1998 (2) 1997 (3) País Brazil (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última A brief review of soil water, solute transport and regionalized variable analysis Scientia Agricola Nielsen,D.R.; Hopmans,J.W.; Kutílek,M.; Wendroth,O.. We initially review basic concepts of the forces acting on soil water, soil water potential and soil water retention, and equations to describe soil water movement under water-saturated and unsaturated conditions. Processes of infiltration, evaporation and redistribution of water will be presented for simple initial and boundary conditions occurring within homogeneous soil columns. Next we consider the physical, chemical and biological processes within a soil profile that distribute, dilute or concentrate solute species within the liquid phase of a soil The relative concentration of solutes in the liquid phase governs not only the retention and transport of water within soils but also contributes to our understanding of managing the quality of water within... Tipo: Info:eu-repo/semantics/article Palavras-chave: Solute transport; Regionalized variable. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300012 Principles of crop modeling and simulation: I. uses of mathematical models in agricultural science Scientia Agricola Dourado-Neto,D.; Teruel,D. A.; Reichardt,K.; Nielsen,D.R.; Frizzone,J. A.; Bacchi,O.O.S.. Modeling techniques applied to agriculture can be useful to define research priorities and understanding the basic interactions of the soil-plant-atmosphere system. Using a model to estimate the importance and the effect of certain parameters, a researcher can notice which factors can be most useful. The modeler should define his objectives before beginning his work and construct a model that fulfills the proposed objectives. Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop modeling; Simulation. Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500008 Principles of crop modelling and simulation: II. the implications of the objective in model development Scientia Agricola Dourado-Neto,D.; Teruel,D.A.; Reichardt,K.; Nielsen,D.R.; Frizzone,J. A.; Bacchi,O.O.S.. With the purpose of presenting to scientists the implications of the objective in model development and a basic vision of modeling, with its potential applications and limitations in agriculture, an integration of crop modeling professionals with agricultural professionals is suggested. Models mean modernization of the information, of the measurement process and of an efficient way to learn more about complex systems. They are one of the best mechanisms of transforming information in useful knowledge and of transferring this knowledge to others. One of the problems that impede a larger progress in modeling is the lack of communication between modelers and a frequent appearance of modelers without a global vision of reality. Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop modeling; Simulation. Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500009 Selected research opportunities in soil physics Scientia Agricola Nielsen,D.R.; Kutilek,M.; Wendroth,O.; Hopmans,J.W.. Selected research opportunities are discussed in order to guide soil science research, with emphasis on soil physics, with the aim of improving agricultural productivity and environmental quality. Tipo: Info:eu-repo/semantics/article Palavras-chave: Research; Soil science; Soil physics. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300010 Vadose zone measurement and modeling Scientia Agricola Hopmans,J. W.; Clausnitzer,V.; Kosugi,K.I.; Nielsen,D.R.; Somma,F.. The following treatise is a summary of some of the ongoing research activities in the soil physics program at the University of California in Davis. Each of the four listed areas win be presented at the Workshop on special topics on soil physics and crop modeling in Piracicaba at the University of Sao Paulo. We limited ourselves to a general overview of each area, but will present a more thorough discussion with examples at the Workshop. Tipo: Info:eu-repo/semantics/article Palavras-chave: Unsaturated zone; Water flow; Transport processes; Modeling. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300004 Registros recuperados: 5 Primeira ... 1 ... Última

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