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Simulacao Da Distribuicao Espacial Da Agua Em Solo Irrigado Com Gotejador
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Book Synopsis Simulação da distribuição espacial da água em solo irrigado com gotejador by : T. A. Botrel
Download or read book Simulação da distribuição espacial da água em solo irrigado com gotejador written by T. A. Botrel and published by . This book was released on 1988 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Este trabalho teve como objetivo apresentar e testar sob condicoes de campo, um modelo matematico para computador, onde se permite estimar a distribuicao espacial da agua em solos sob fontes puntiformes. O modelo utilizou a equacao de Darcy para fluxo d'agua em solos nao saturados, e o principio de conservacao das massas. A condutividade hidraulica em funcao da umidade para utilizacao na equacao de Darcy, foi determinada a partir da curva de retencao de umidade e da condutividade hidraulica saturada, seguindo metodologia descrita por VAN GENUCHTEN (1980). Os parametros necessarios a simulacao foram: umidade inicial, curva caracteristica de retencao de agua do solo, condutividade hidraulica saturada, densidade global, vazao da fonte puntiforme e volume d'agua aplicado. O modelo foi testado em condicoes de campo num latossol vermelho amarelo fase arenosa submetido a uma fonte puntiforme com vazao de 10 1/h e um volume total de 30 litros. O perfil de distribuicao de umidade, foi avaliado por metodo gravimetrico, sendo as amostras obtidas utilizando-se de um trado amostrador. As amostras foram colhidas nos tempos de 24, 48 e 72 horas, apos o inicio da aplicacao d'agua. Os perfis de distribuicao de agua no solo observados, apresentaram-se semelhante aos simulados pelo modelo.
Book Synopsis Hydraulic Conductivity by : Lakshmanan Elango
Download or read book Hydraulic Conductivity written by Lakshmanan Elango and published by BoD – Books on Demand. This book was released on 2011-11-23 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are several books on broad aspects of hydrogeology, groundwater hydrology and geohydrology, which do not discuss in detail on the intrigues of hydraulic conductivity elaborately. However, this book on Hydraulic Conductivity presents comprehensive reviews of new measurements and numerical techniques for estimating hydraulic conductivity. This is achieved by the chapters written by various experts in this field of research into a number of clustered themes covering different aspects of hydraulic conductivity. The sections in the book are: Hydraulic conductivity and its importance, Hydraulic conductivity and plant systems, Determination by mathematical and laboratory methods, Determination by field techniques and Modelling and hydraulic conductivity. Each of these sections of the book includes chapters highlighting the salient aspects and most of these chapters explain the facts with the help of some case studies. Thus this book has a good mix of chapters dealing with various and vital aspects of hydraulic conductivity from various authors of different countries.
Download or read book Agrindex written by and published by . This book was released on 1989 with total page 1304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Publisher :Infrastructure Technology Institute Northwestern University ISBN 13 :9780971263109 Total Pages : pages Book Rating :4.2/5 (631 download)
Book Synopsis Proceedings of the Second International Symposium and Workshop on Time Domain Reflectometry for Innovative Geotechnical Applications by :
Download or read book Proceedings of the Second International Symposium and Workshop on Time Domain Reflectometry for Innovative Geotechnical Applications written by and published by Infrastructure Technology Institute Northwestern University. This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This publication includes papers presented at the Second International Time Domain Reflectometry (TDR) Symposium and Workshop for Innovative Geotechnical Applications held at Northwestern University, September 5-7, 2001, in Evanston, Illinois. The objective of the Conference was to provide a forum for the exchange of information about the current state of TDR innovation between practitioners and researchers in all levels of the public and private sector"--Prelim. screens.
Book Synopsis Soil Salinity Assessment by : J. D. Rhoades
Download or read book Soil Salinity Assessment written by J. D. Rhoades and published by Food & Agriculture Org.. This book was released on 1999 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of soil salinity from aqueous electrical conductivity; determination of soil salinity from soil-paste and bulk soil electrical conductivity; example uses of salinity assessment technology; operational and equipment costs associated with salinity instrumentation measurement techniques.
Book Synopsis Sugarcane Crop Management by : S. B. Singh
Download or read book Sugarcane Crop Management written by S. B. Singh and published by SciTech Publishing. This book was released on 2002-01-01 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sugarcane is an important cash crop in many tropical and sub tropical countries and is one of the main sources of sugar production in the world. In addition to several other factors, sugarcane pests and diseases are also responsible for significant losses in yield. Sugarcane crop management, like most of the other disciplines, has advanced tremendously, both quantitatively and qualitatively particular in the last decade. In recent years, advanced biotechnological and molecular biological tools have been applied for identification and management of sugarcane pests. In addition to this, the newly reported alarming pests and diseases of sugarcane are also assuming international interest on account of their etiology, losses and wider occurrence.
Book Synopsis Soil Management for Sustainability by : R. Lal
Download or read book Soil Management for Sustainability written by R. Lal and published by . This book was released on 1991 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book manuscripts presented originally at a World Association of Soil and Water Conservation conference held in 1989 are collected. Topics include basic processes (e.g. soil structure, soil erosion, soil compaction); management options (e.g. conservation tillage); policy issues and priorities
Book Synopsis Hunting the Essex by : Midshipman Allen Gardiner
Download or read book Hunting the Essex written by Midshipman Allen Gardiner and published by Seaforth Publishing. This book was released on 2013-06-30 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: In February 1813 the British frigate Phoebe set out on a secret mission that would involve sailing halfway around the world to attack American settlements in the Pacific Northwest. The United States, frustrated at the treatment of its shipping by the combatants in the Napoleonic Wars, had finally opened hostilities against the British in the previous June. From the American perspective the War of 1812 began with disasters in its invasion of Canada, but against all expectations the infant US Navy had scored significant victories at sea. The most strategically significant of these was the campaign by the frigate USS Essex, which had almost annihilated the lucrative British whaling trade in the south Pacific. Therefore, Phoebe was diverted to hunt down and destroy this highly successful commerce-raider. After an epic search, Phoebe tracked her prey to neutral Valparaiso where the American frigate was blockaded and,in a very bloody battle, eventually captured. The American captain, David Porter, published a self-serving account of his actions which ever since has mired the battle in controversy, so this British naval eyewitness account is an important counter-balance. It is one of the lesser-known campaigns of a war which is currently celebrating its bicentenary, but its inherent drama inspired the plot of Patrick O'Brian's novel The Far Side of the World, although in its movie adaptation Master & Commander the American frigate is transformed into a French privateer.
Book Synopsis Deep Plowing and Subsoiling by : Andrew Hamilton Wright
Download or read book Deep Plowing and Subsoiling written by Andrew Hamilton Wright and published by . This book was released on 1914 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
