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close this bookBetter Farming Series 04 - The Soil: How the Soil is Made up (FAO - INADES, 1976, 37 p.)
View the document(introduction...)
View the documentPreface
View the documentPlan of work
View the documentWhy we study the soil
close this folderDifferent kinds of land
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View the documentThe soil
View the documentThe subsoil
View the documentThe parent rock
View the documentExamples of different soils
close this folderWhat is soil made of ?
View the document(introduction...)
close this folderSand
View the document(introduction...)
View the documentSandy soils
close this folderClay
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View the documentClay soils
close this folderSilt
View the document(introduction...)
View the documentSilty soils
close this folderHumus
View the document(introduction...)
View the documentWhat humus does
View the documentSome practical advice
View the documentAir in the soil
close this folderWater in the soil
View the document(introduction...)
View the documentCirculation of water in the soil
View the documentPractical advice
close this folderLiving creatures in the soil
View the documentEarthworms
View the documentRats and other animals
View the documentTermites
View the documentOther insects
View the documentMicrobes
View the documentSuggested question paper

(introduction...)

Published by arrangement with the
Institut africain pour le dloppement nomique et social
B.P. 8008, Abidjan, Cd'Ivoire

FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome 1976

FAO Economic and Social Development Series No. 3/4

First edition 1970
Reprinted 1972
Second edition, revised, 1976
Reprinted 1983, 1986

P-69
ISBN 92-5-100143-X

© French edition, Institut africain pour le dloppement nomique et social (INADES) 1970
© English edition, FAO 1976