The document discusses soil water, including its classification, movement through soil, availability to plants, and factors that affect availability. It introduces key concepts like infiltration, percolation, pore space, and how soil acts as a sponge to take up and retain water, with pore space allowing for storage and movement of water. The document also covers indicators of plant water stress, development of water deficiency in plants, and concluding with factors that influence water availability.

1. Soil water
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2. Contents
Introduction
Classification of soil water
Movement of water in soil
Soil water availability to plants
Indicators of plant water stress
Development of plant water deficiency
Water availability factors
Conclusion
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3. Introduction
Soil acts as a sponge to take up and retain
water. Movement of water into soil is
called infiltration, and the downward
movement of water within the soil is
called percolation, permeability or hydraulic
conductivity. Pore space in soil is the conduit
that allows water to infiltrate and percolate. It
also serves as the storage compartment for
water.
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