Applied physics to agricultural machinery. Tractors used in agriculture and in other similar activities. Operative machines for tillage, crop planting, fertilizers and agrochemicals distribution, non-chemical weed control and crop protection and harvesting (of herbaceous, vegetable and arboreal crops): description, functioning, typology; criteria of choice and for a proper use. Machines for the management of green urban areas and biomass. Scientific organization of agricultural work: operative capacity of machines and work chains, operative efficiency. Precision farming: automation, sensors and robotics applied to agricultural machinery. Logistics applied to agricultural work chains. Safe use of agricultural machinery.