Chemicals Humus And The Soil
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Chemicals Humus And The Soil
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Author : Donald Percy Hopkins
language : en
Publisher:
Release Date : 1945
Chemicals Humus And The Soil written by Donald Percy Hopkins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1945 with Agricultural chemicals categories.
The case for fertilizers. The case against fertilizers.
Organic Chemicals In Soil Environment
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Author : Goring C. A. I.
language : en
Publisher:
Release Date : 1988
Organic Chemicals In Soil Environment written by Goring C. A. I. and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Humus Its Structure And Role In Agriculture And Environment
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Author : J. Kubát
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Humus Its Structure And Role In Agriculture And Environment written by J. Kubát and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
This volume presents the proceedings of the 10th internationalsymposium Humus et Planta held in Prague in August 19-23,1991. The main topics of this book are devoted to the recentadvances in fundamental, as well as applied research of humicsubstances, the most abundant of the naturally occuringmacromolecules of nature, the understanding of their natureand how they react and interact in their natural environments.Texts are included on the structure, physical and chemicalproperties of humic substances; the relationships among humus,soil properties and fertility; the biotransformations oforganic substances in the soil; the relationships betweenhumic substances and plants and the interactions of humus andxenobiotic substances. This book presents recent knowledge ofthe complicated and challenging humic substances. It will beof interest not only to scientist, but also to Universityteachers and students of agricultural and environmentalsciences.
Soil
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Author : Adele Richardson
language : en
Publisher: Capstone
Release Date : 2001
Soil written by Adele Richardson and has been published by Capstone this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Juvenile Nonfiction categories.
Discusses the different types of soil, its properties, erosion, pollution, and how humans can protect soil.
Farm Chemicals
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Author :
language : en
Publisher:
Release Date : 1898
Farm Chemicals written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1898 with Agricultural chemicals categories.
Humus
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Author : Selman Abraham Waksman
language : en
Publisher:
Release Date : 1963
Humus written by Selman Abraham Waksman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Humus categories.
Soil Organic Matter
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Author : M. M. Kononova
language : en
Publisher: Elsevier
Release Date : 2013-10-02
Soil Organic Matter written by M. M. Kononova and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-02 with Technology & Engineering categories.
Soil Organic Matter: Its Nature, Its Role in Soil Formation and in Soil Fertility focuses on the contributions of soil organic matter in soil formation and fertility, including weathering, decomposition, and synthesis of humus substances. The publication first elaborates on the main stages in the history of soil humus study and ideas on the composition of soil organic matter and nature of humus substances. Discussions focus on organic substances of individual nature, strictly humus substances in soil organic matter, and humus substances as a complex of high molecular- weight compounds. The text then examines the biochemistry of humus formation, including the role of physical, chemical, and biological factors, origin of humus substances, possible participation of lignin in the formation of humus substances, and the role of oxidizing enzymes in the synthesis of humus substances. The manuscript takes a look at the importance of organic matter in soil formation and soil fertility and the natural factors of humus formation. Topics include the role of organic matter in the weathering and decomposition of soil minerals; role of organic matter in the formation of soil structure; effect of organic matter on the growth and development of plants; and influence of chemical and physicochemical soil properties on humus formation. The publication is a dependable source material for readers interested in the influence of soil organic matter in soil formation and fertility.
Transport Fate Of Chemicals In Soils
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Author : Prahlad Maurya
language : en
Publisher: Scitus Academics LLC
Release Date : 2015-03
Transport Fate Of Chemicals In Soils written by Prahlad Maurya and has been published by Scitus Academics LLC this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03 with Groundwater categories.
The weathering of the parent material by water determines, to a large extent, the chemical composition of the soil which has ultimately been produced. Some chemicals are leached into the lower soil layers where they accumulate. Other chemicals, more insoluble, are left in the upper layers of the soil. The most rapid removed chemicals are chlorides and sulphates, followed by calcium, sodium, magnesium and potassium. The silicates and oxides of iron and aluminium decompose very slowly and are rarely leached. When some of these products come into contact with the air in the soil, chemical reactions occur, such as oxidation in particular, which results in the formation of chemicals either more soluble or more fragile than the original ones. This results in an acceleration of the weathering processes, increased leaching* of chemicals, and further changes in the soil chemical composition. A freshwater acid sulphate soil may develop when the waterlogged soil containing iron sulphurs (pyrites) is exposed to the air, for example, when constructing ponds.
Chemistry Of Soil Organic Matter
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Author : K. Kumada
language : en
Publisher: Elsevier
Release Date : 1988-01-01
Chemistry Of Soil Organic Matter written by K. Kumada and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988-01-01 with Technology & Engineering categories.
Despite the large number of papers and books published on soil organic matter (humus), our knowledge of the subject is still very limited, as is our knowledge of humic acid. The author of this book began to study humus at the end of the 1940s and continued until 1984 when he retired from Nagoya University. With the intention of establishing a systematic understanding of soil organic matter, he has compiled facts and a discussion of humus based on his extensive experimental results during the past 40 years. In this book, humic acids are classified into A, B, Rp and P types, based on their optical properties. The elementary composition and other chemical properties of humic acid types are shown to be regularly different from each other. A new method for humus composition analysis applied to various kinds of soils in Japan and several other countries indicates that the diversity of humus compositions of soils is systematically understandable. These findings lead the author to novel theories on the chemical configuration and formation of humic acids and humic substances. Diagenesis of humus under terrestrial conditions is illustrated as to the buried humic horizons of Black soil (Andosol). The book will be useful not only to soil scientists and agronomists but also to geochemists, oceanographers, limnologists, water scientists, biologists and chemists who are dealing with organic matter in terrestrial, aquatic, and sedimentary environments.
The Soil And Health
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Author : Albert Howard
language : en
Publisher: A Distant Mirror
Release Date : 2020-03-22
The Soil And Health written by Albert Howard and has been published by A Distant Mirror this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-22 with Business & Economics categories.
This is a newly edited revision of Albert Howard's important text on organic farming and gardening, and the central role of humus in maintaining soil health and fertility. No single generation has the right to exhaust the soil from which humanity must draw its sustenance. Modern agricultural practices, with their emphasis on chemicals, poisons, and toxins, lead to the impoverishment and death of the soil. THE SOIL AND HEALTH is a detailed analysis of the vital role of humus and compost in soil health — and the importance of soil health to the health of crops and the humans who eat them. The author is keenly aware of the dead end which awaits humanity if we insist on growing our food using artificial fertilisers and poisons. Albert Howard (1873-1947) was one of the leaders of the British organics movement in the mid-twentieth century. He was the first westerner to document and publish research on traditional techniques of agriculture, including Indian and Chinese farming and management of the soil. "Agriculture is the fundamental industry of the world and must be allowed to occupy the primary position in the economies of all countries." — Albert Howard CONTENTS 1 - Soil Fertility and Agriculture 1.1 The operations of Nature - The life of the plant - The living soil - The significance of humus - The importance of minerals 1.2 Systems of agriculture - Primitive forms of agriculture - Shifting cultivation - The harnessing of the Nile - Staircase cultivation - The agriculture of China - The agriculture of Greece and Rome - Farming in the Middle Ages 1.3 Soil fertility in Great Britain - The Roman occupation - The Saxon conquest - The open-field system - The depreciation of soil fertility - The low yield of wheat - The Black Death- Enclosure - The Industrial Revolution and soil fertility - The Great Depression of 1879 - The Second World War 1.4 Industrialism and the profit motive - The exploitation of virgin soil - The profit motive - The consequence of soil exploitation - The easy transfer of fertility - The road farming has travelled 1.5 The intrusion of Science - The origin of artificial fertilisers - The advent of the laboratory hermit - The unsoundness of Rothamsted - Artificials during the two world wars - The shortcomings of current agricultural research 2 - Disease in Present-day Farming and Gardening 2.1 Diseases of the soil - Soil erosion - The formation of alkaline land 2.2 The diseases of crops - Sugar Cane - Coffee - Tea - Cacao - Cotton - Rice - Wheat - Vine - Fruit - Tobacco - Leguminous crops - Potato 2.3 Disease and health in livestock - Foot-and-mouth disease - Soil fertility and disease - Concentrates and contagious abortion - Selective feeding by instinct - Herbs and livestock - The maintenance of our breeds of poultry 2.4 Soil fertility and human health 2.5 The nature of disease 3 - The Problem of Manuring 3.1 The origins and scope of the problem - The phosphate problem and its solution - The reform of the manure heap - Sheet-composting and nitrogen fixation - The utilisation of town wastes 3.2 The Indore Process - Some practical points - The New Zealand compost box - Mechanisation - The spread of the Indore Process 3.3 The reception by scientists 4 - Conclusions and Suggestions