Advanced Agricultural Sciences

Unit 1 Water Quantities.- 1.1 The Soil as a Reservoir.- 1.2 Calculating Soil Water.- 1.3 Measuring Soil Water.- 1.4 Applications of Soil Water Content Information.- 1.4.1 Yield and Evapotranspiration.- References.- Problems.- Unit 2 Water Potentials.- 2.1 Soil Water Potential.- 2.1.1 Gravitational Potential--?z.- 2.1.2 Matric Potential--?m.- 2.1.3 Pressure Potential--?p.- 2.2 Water Potentials for Equilibrium Conditions.- 2.3 Water Potentials for Nonequilibrium Conditions.- 2.4 Calculating Potentials in Soil Columns.- 2.5 Scheduling Irrigation with Tensiometers.- 2.6 Measuring Matric Potential in the Laboratory.- 2.7 Soil Water Characteristic Curves.- 2.8 Capillarity and Hysteresis in Soil Water.- 2.9 Soil Structure and Soil Water Characteristic Curves.- 2.10 Solute Potential.- 2.11 Measuring Water Potential.- 2.12 Other Methods of Measuring Potentials.- References.- Problems.- Unit 3 Water Flow in Soil.- 3.1 Steady State Water Flow in Soil.- 3.2 Transient State Water Flow in Soil.- 3.3 Horizontal Infiltration into Soil.- 3.4 Vertical Infiltration into Soil.- 3.5 Initial and Boundary Conditions.- 3.6 Soil Evaporation.- 3.7 Reducing Evaporation.- 3.8 Drainage of Water in Soil.- 3.9 Water Vapor Flow in Soils.- References.- Problems.- Unit 4 Soil Plant Atmospheric Relations.- 4.1 Radiation.- 4.2 Energy Budget.- 4.3 Estimating Evapotranspiration from Climatological and Soils Data.- 4.3.1 Aerodynamic Profile Methods.- 4.3.2 Combination Energy Balance Aerodynamic Methods.- 4.3.3 Soil Surface Temperature as Influenced by Climate.- 4.3.4 Penman's Combination Method.- 4.3.5 Empirical Methods.- 4.4 Crop Coefficients.- 4.5 Transpiration Coefficients.- 4.6 Evapotranspiration When Water Is Limiting.- 4.7 Plant Growth and Evapotranspiration.- 4.8 Estimating Transpiration.- References.- Problems.- Unit 5 Soil Heat Flow and Temperature.- 5.1 Soil Heat.- 5.2 Steady State Heat Flow.- 5.3 Soil Temperature.- 5.4 Factors That Influence Soil Temperature.- 5.5 Nonsteady State Heat Flow.- References.- Problems.- Conversion Factors.- Symbols.