Abstract

                                Soil is the basis of all agriculture. Although it has been shown that vegetables and some other crops can be grown in water cultures it is on the soil that agriculture all over the world. depends. Soil not only gives support to the plants and trees growing on it, but it is from the soil that plants take the major part of the nutrients and water required for their growth and reproduction. It is on the produce of plants that men and animals live. Soil is therefore very important and has been studied from time immemorial in order to increase and maintain its productivity.

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