Soil Texture:The relative proportions of sand, silt, and clay in a soil. Soil texture affects many physical and chemical properties of the soil, including porosity, water holding capacity, cation exchange capacity, and aeration. It also influences the ease with which a soil can be tilled.
Soil Water Zone:The portion of the soil that is filled with water. The water content of this zone varies depending on the type of soils and the amount of rainfall. The water content also affects how easily roots can penetrate the soils and how well plants can uptake water and nutrients from the soils.
Solarization:A method of pest control that uses solar energy to heat up the soils to high temperatures (120-140 degrees Fahrenheit). This kills many types of pests, including nematodes, fungi, bacteria, and weed seeds. Solarization can be done before planting or during crop production.
Solvent: A solvent is a substance that dissolves a solute (a chemically distinct minority phase) to produce a solution. Solvents can be liquids, gases, or solids. The ability of a solvent to dissolve a solute is called its solvency.
Sooty mold: Sooty mold is a type of fungus that grows on the surface of plants. The fungus gets its name from the black, soot-like substance it produces. Sooty mold does not penetrate plant tissue, but it can cause damage by blocking sunlight from reaching the leaves.
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