Reducing Soil Water Evaporation with Tillage and Straw Mulching provides a clear overview of the theories and data that explain the process of evaporation from free water and soils that are bare, tilled, or residue-covered.

Reducing Soil Water Evaporation with Tillage and Straw Mulching receives the same extended treatment, followed by an appraisal of the effects of different combinations of tillage and mulching on evaporation and water use during fallow and cropped periods.

Contents

1. The Process of Evaporation

• Evaporation From a Free Water Surface
• Evaporation From Untreated Bare Soil
• Evaporation From Tilled Soil
• Evaporation From Crop-Residue-Covered Soil

2.Measurement and Modeling of Soil Evaporation

• Evaporation From Untreated Bare Soil
• Evaporation From Tilled Bare Soil
• Residue Effects and the Interaction of Residue with Tillage

3. Evaporation Reduction by Tillage

• General Trends
• Effect of Soil Type
• Effect of Evaporativity
• Effect of Time and Type of Tillage
• Effect of the Interaction Between Soil Type and Evaporativity
• Effects of the Characteristics of the Tilled Layer
• Effect of Tillage and Soil Type on the Moisture Profile

4. Evaporation Reduction by Straw Mulching

• General Trends
• Effect of Soil Type
• Effect of Evaporativity
• Effect of the Interaction Between Soil Type and Evaporativity
• Effect of Mulch Rates
• Effect of Type of Residue
• Effect of Placement of Residue
• Effect of Rainfall
• Field Observations

5. Evaporation Reduction by Combining Mulching and Tillage

• Effect of Soil Type
• Effect of Depth of Mixing
• Effect of Rainfall
• Effect of Crop-Residue Mulching and Mixing on the Moisture Profile

Index

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