The soil works are executed with different agricultural machinery and tools in order to achieve the most favorable environment for plant growth and development. The importance of soil works is limited to:-from soil work, it flinches, crushes or squeezes in order to achieve a favorable ratio between the capillary and incipient spaces, improving the water, air, and heat of the soil; -the soil works combat weeds and destroy the outbreaks of diseases and pests; - soil operations and especially those with furrow return incorporate into the soil the organic residues (stalks, weeds) that are subject to the decomposition process, resulting in humus and nutrients; soil operations intensify biological and chemical processes in the soil, intensify the activity of microorganisms, nitrifying bacteria and nitrogen fixators.