Contribution A Letude Du Dosage De Lazote Nitrique Par La Methode Devarda

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Perspectives for Agronomy

Author : M.K. van Ittersum
Publisher : Elsevier
ISBN 13 : 0080538665
Total Pages : 381 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Perspectives for Agronomy by : M.K. van Ittersum

Download or read book Perspectives for Agronomy written by M.K. van Ittersum and published by Elsevier. This book was released on 1997-12-11 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 4th ESA-Congress, held in the Netherlands, 7-11 July 1996, a new perspective for agronomy emerged. Various contributions demonstrate the need for a new role of agronomy and its tools. In recent decades, agriculture has evolved from an activity with mainly productivity aims, into an issue conciliating environmental, agricultural, and economic and social objectives. Placing agriculture in such a broadened perspective requires a different agronomy, with new tools and approaches at a range of aggregration levels. It calls for detailed knowledge concerning the functioning, productivity and ecological relationships of agricultural plants and crops. In addition, it calls for a constant update and synthesis of existing and newly generated knowledge, the design of new ideotypes and genotypes, new production technologies, cropping systems, farming systems and agro-ecological land use systems. This proceedings book presents a set of case studies illustrating the various agronomic tools that can be used for specific agronomic questions. The case studies are grouped in sections illustrating relevant subquestions in developing an agriculture with broadened objectives. The book starts with an introductory paper on the role of agronomy in research and education in Europe. The second section deals with agricultural land use, food security and environment. This is followed by a set of papers describing experimental research and modeling approaches used to design new ideotypes of crops, including physiological properties in relation to growth factors such as radiation, CO2, temperature and water. Sustained soil fertility directly links to nutrient cycling and soil organic matter. A selected set of papers addresses the improvements in resource use efficiency and as such their contribution towards economic, environmental and agricultural objectives. The final section addresses the design of integrated and ecological arable farming systems. It highlights the role of prototyping interaction with leading-edge farmers, as promising tools to design, implement and test new farming systems. It is hoped that the activities of the European Society for Agronomy and the Proceedings of its 4th Congress will stimulate to serve the new perspectives of agronomy, i.e. to adopt ecological principles, to optimally manage the use of resources and to meet social and economic objectives.

Soils and Fertilizers

Author :
Publisher :
ISBN 13 :
Total Pages : 1060 pages
Book Rating : 4.3/5 (21 download)

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Book Synopsis Soils and Fertilizers by :

Download or read book Soils and Fertilizers written by and published by . This book was released on 1948 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Horticultural Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 730 pages
Book Rating : 4.3/5 (126 download)

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Download or read book Horticultural Abstracts written by and published by . This book was released on 1946 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agronomie

Author :
Publisher :
ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.:/5 (6 download)

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Download or read book Agronomie written by and published by . This book was released on 1996 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bibliography of Agriculture

Author :
Publisher :
ISBN 13 :
Total Pages : 1358 pages
Book Rating : 4.3/5 (126 download)

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Download or read book Bibliography of Agriculture written by and published by . This book was released on 1947 with total page 1358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemisches Zentralblatt

Author :
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.:/5 (7 download)

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Download or read book Chemisches Zentralblatt written by and published by . This book was released on 1948 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Food Protein Analysis

Author : Richard Owusu-Apenten
Publisher : CRC Press
ISBN 13 : 0824744675
Total Pages : 428 pages
Book Rating : 4.8/5 (247 download)

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Book Synopsis Food Protein Analysis by : Richard Owusu-Apenten

Download or read book Food Protein Analysis written by Richard Owusu-Apenten and published by CRC Press. This book was released on 2002-05-24 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ideal for planning, performing, and interpreting food protein analyses, especially as it relates to the effect of food processing on protei investigation results. Delineates basic research principles, practices, and anticipated outcomes in each of the illustrated protein assays.

The Kjeldahl Method for Organic Nitrogen

Author : R. B. Bradstreet
Publisher : Elsevier
ISBN 13 : 1483258599
Total Pages : 248 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis The Kjeldahl Method for Organic Nitrogen by : R. B. Bradstreet

Download or read book The Kjeldahl Method for Organic Nitrogen written by R. B. Bradstreet and published by Elsevier. This book was released on 2013-10-22 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Kjeldahl Method for Organic Nitrogen volume presents a broad and comprehensive survey of the method as applied to natural products and organic nitrogen compounds. The quantitative determination of an element as widely distributed as nitrogen is of great importance, and the truth of this is borne out by the tremendous amount of literature published throughout the years. The analysis of nitrogen can be divided into two classes: inorganic and organic. This book is concerned only with organic nitrogen compounds, and specifically their determination by the Kjeldahl method. The book opens with a chapter on the historical background and the work leading to the evolution of the method. This is followed by separate chapters that discuss each of the several divisions of the method, e.g., salt addition, reduction, oxidation, catalysts, distillation.

History of Analytical Chemistry

Author : Ferenc Szabadváry
Publisher : Elsevier
ISBN 13 : 1483157121
Total Pages : 430 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis History of Analytical Chemistry by : Ferenc Szabadváry

Download or read book History of Analytical Chemistry written by Ferenc Szabadváry and published by Elsevier. This book was released on 2016-01-22 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: History of Analytical Chemistry is a systematic account of the historical development of analytical chemistry spanning about 4,000 years. Many scientists who have helped to develop the methods of analytical chemistry are mentioned. Various methods of analysis are discussed, including electrogravimetry, optical methods, electrometric analysis, radiochemical analysis, and chromatography. This volume is comprised of 14 chapters and begins with an overview of analytical chemistry in ancient Greece, the origin of chemistry, and the earliest knowledge of analysis. The next chapter focuses on analytical chemistry during the Middle Ages, with emphasis on alchemy. Analytical knowledge during the period of iatrochemistry and the development of analytical chemistry during the phlogiston period are then examined. Subsequent chapters deal with the development of the fundamental laws of chemistry, including the principle of the indestructibility of matter; analytical chemistry during the period of Berzelius; and developments in qualitative and gravimetric analysis. Elementary organic analysis is also considered, along with the development of the theory of analytical chemistry. This book will be helpful to chemists as well as students and researchers in the field of analytical chemistry.

Kjeldahl Guide

Author : Huldrych Egli
Publisher :
ISBN 13 : 9783033016880
Total Pages : 152 pages
Book Rating : 4.0/5 (168 download)

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Book Synopsis Kjeldahl Guide by : Huldrych Egli

Download or read book Kjeldahl Guide written by Huldrych Egli and published by . This book was released on 2008 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Official and Tentative Methods of Analysis of the Association of Official Agricultural Chemists

Author :
Publisher :
ISBN 13 :
Total Pages : 442 pages
Book Rating : 4.3/5 (117 download)

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Book Synopsis Official and Tentative Methods of Analysis of the Association of Official Agricultural Chemists by :

Download or read book Official and Tentative Methods of Analysis of the Association of Official Agricultural Chemists written by and published by . This book was released on 1920 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Maize and livestock: their inter-linked roles in meeting human needs in Ethiopia

Author :
Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 : 9291462144
Total Pages : 103 pages
Book Rating : 4.2/5 (914 download)

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Book Synopsis Maize and livestock: their inter-linked roles in meeting human needs in Ethiopia by :

Download or read book Maize and livestock: their inter-linked roles in meeting human needs in Ethiopia written by and published by ILRI (aka ILCA and ILRAD). This book was released on with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Kjeldahl Method for Nitrogen Determination

Author : J. Benton Jones (Jr.)
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Kjeldahl Method for Nitrogen Determination by : J. Benton Jones (Jr.)

Download or read book Kjeldahl Method for Nitrogen Determination written by J. Benton Jones (Jr.) and published by . This book was released on 1991 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agriculture in Semi-Arid Environments

Author : A.E. Hall
Publisher : Springer Science & Business Media
ISBN 13 : 3642673287
Total Pages : 357 pages
Book Rating : 4.6/5 (426 download)

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Book Synopsis Agriculture in Semi-Arid Environments by : A.E. Hall

Download or read book Agriculture in Semi-Arid Environments written by A.E. Hall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semi-arid zones of the world are fragile ecosystems which are being sub stantially modified by the activities of mankind. Increasing human populations have resulted in greater demands on semi-arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern. These zones are harsh habitats for humans. The famines that resulted from drought during the late 1960's and the 1970's in the African Sahel illustrated the unreliability of present agricultural systems in this zone. Large fluctuations in ag ricultural production have occurred in semi-arid zones of Australia, North Ameri ca, and the Soviet Union due to periodic droughts, even though considerable ag ricultural technology has been devoted to agricultural development in these zones. The challenge to mankind is to manage these different semi-arid zones so that pro ductivity is increased and stabilized, and environmental deterioration is decreased. Irrigation can be used to increase and stabilize agricultural production in semi-arid zones as discussed in Volume 5 of this series, Arid Zone Irrigation. The present volume, Agriculture in Semi-Arid Environments, focuses on dryland farming in semi-arid zones, and is relevant to the large areas of the world where rainfall is limiting and where water is not available for irrigation. This volume is designed to assist agricultural development in these areas and consists of reviews and analyses of available information by scientists working in Africa, Australia, and at the U ni versity of California.

Livestock Systems Research in Nigeria's Subhumid Zone

Author :
Publisher : ILRI (aka ILCA and ILRAD)
ISBN 13 :
Total Pages : 506 pages
Book Rating : 4./5 ( download)

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Book Synopsis Livestock Systems Research in Nigeria's Subhumid Zone by :

Download or read book Livestock Systems Research in Nigeria's Subhumid Zone written by and published by ILRI (aka ILCA and ILRAD). This book was released on with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Methods of Protein Analysis

Author : István Kerese
Publisher : Ellis Horwood
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Methods of Protein Analysis by : István Kerese

Download or read book Methods of Protein Analysis written by István Kerese and published by Ellis Horwood. This book was released on 1984 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A reference text for food scientists, analysts, and biochemists presents a systematic, comprehensive survey of working procedures and methods for the analysis of proteins, peptides, and amino acids of varying origin and composition that can be used with equipment that generally is available in the average laboratory. Topics include: general laboratory methods for the preparation and characterization of proteinaceous materials; electrophoreticmethods (especially using polyacrylamide gels); thin-layer chromatographic methods; gel chromatography and gel filtration methods; and experimental procedures for nitrogendetermination, amino acid composition, electrophoresis, isoelectric focusing, ion-exchange chromatography, and gel filtration. Step-by-step descriptions are provided for sample preparation for analysis and problems requiring resolution are discussed.

Water Analysis

Author : James Alfred Wanklyn
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (2 download)

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Book Synopsis Water Analysis by : James Alfred Wanklyn

Download or read book Water Analysis written by James Alfred Wanklyn and published by . This book was released on 1868 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.