Electrical Power for Agricultural Machines Principles of Operation of Induction Motors Types of Single-Phase Induction Motors Capacitor-start, induction-run motors Two-value-capacitor, induction-run motors Repulsion-start, induction-run motors Three-Phase Induction Motors Dual-Voltage Motors Motor Nameplate Information Precision Agriculture Global Positioning System Geospacial Information System Map coordination Tractor Hitching, Traction, And Testing Hitching and weight transfer Control of hitches Tires and Traction Traction Aids Soil Tillage Tillage Methods and Equipment Primary tillage in conventional tillage systems Disk plows Disk tillers Chisel plows & Subsoilers Stubble-mulch plows and Tillers Secondary tillage in conventional tillage systems Disk harrows Spike-tooth, tine-tooth, and spring-tooth harrows Cultivators Mechanics of Tillage Tools Mechanical properties of soils Crop Planting Broadcast seeding Drilling Precision planting