e-book

Chemistry of variable charge soils

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In the vast areas of tropical and subtropical regions there is a category of widely distributed, highly weathered soils known as "Red Earths," also referred to as Ferralsols, Acrisols, Oxisols, Ultisols, Latosols, Lateritic Soils, Krasnozems, Ferrisols, and Ferrallitic Soils. Because of the abundant rainfall and high temperature, this type of soil is considered one of the most important agricultural soils in the world. However, because of some unfavorable properties inherent in these soils, the productivity is generally low. Proper utilization and melioration of these soils remain an important problem in agricultural production.

Besides agriculture, soil pollution is becoming an increasingly important problem following the industrialization in these regions. Since "Red Earths" are generally low in their buffering capacity against acid precipitation and other pollutants, the problem presents a series of special features. From a scientific standpoint, just as most of the characteristics of paddy soils are related to "water," red earths' characteristic features are closely related to "red," a visible indication of the presence of the large amounts of iron oxides. These iron oxides, together with the large amounts of aluminum oxides, cause the surface charge carried by the clay to become markedly variable. This is the reason for the name variable charge soils. Because of this feature, the soils possess certain properties different from those of the
constant charge soils in temperate regions. It would be helpful to have a comprehensive understanding of the chemical properties of these soils, and the results from research on these soils can enrich our present knowledge that comes primarily from research on constant charge soils.

In this book, emphasis is placed on the interactions among charged particles (clay, ions, protons and electrons) and their chemical consequences in soils. This is the essence of soil chemistry. Actually, the topics cover most areas of modern soil chemistry.

It is my hope that this book may help the reader to understand the basic characteristics of variable charge soils and the fundamental difference between this kind of soil and constant charge soils. Such an understanding, when applied to research, may be helpful for further development in this
field.

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Ketersediaan

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Informasi Detail

Judul Seri

Topics in sustainable agronomy

No. Panggil

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Penerbit

New York : Oxford University Press, Inc.., 1997

Deskripsi Fisik

S592.53.Y85 - 631.4'1—dc20 95-41882

Bahasa

English

ISBN/ISSN

0-19-509745-9

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PERTANIAN.
KIMIA TANAH

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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