Page 8 - soil-plant-water relationship and water requirement
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LIST OF CONTENT
1.0 HYDROLOGICAL CYCLE IN AGRICULTURE
Exercise 1 4
2.0 EVAPORATION, EVAPOTRANSPIRATION AND INFILTRATION
2.1 EVAPORATION PROCESS
2.1.1 Factors That Affect the Evaporation 6
2.1.2 Measurement of Evaporation 7
2.2 EVAPOTRANSPIRATION PROCESS
2.2.1 Evapotranspiration Terminology 10
2.2.2 Factors Affecting Evapotranspiration 10
2.2.3 Evapotranspiration (ET) Measurement 11
2.3 INFILTRATION PROCESS
2.3.1 Infiltration Terminologies 12
2.3.2 Factors Affecting Infiltration Rate 13
2.3.3 Infiltration Rate & Soil Texture Relationship 14
2.3.4 Infiltration Rate Determination 15
Exercise 2 20
3.0 SOIL MOISTURE CONTENT IN THE SOIL.
3.1 INTRODUCTION 23
3.2 SOIL WATER AND SOIL WATER CONSTANT 23
3.3 SOIL WATER AND PLANT USE 28
3.4 SOIL MOISTURE MEASURING METHOD
3.4.1 By Feel 28
3.4.2 Gravimetric Method 28
3.4.3 Tensiometer 29
3.4.5 Neutron Probe 29
3.4.6 Gypsum Block 30
Exercise 3 31
4.0 CROP GROWTH CHARACTERISTIC
4.1 WATER, CROP YIELD, AND QUALITY 33
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