Field experiments play an extremely important role in the study of methods of cultivating plants and increasing yields. High yields are obtained by creating all the conditions necessary for their life for grown plants and using a set of various agrotechnical techniques for this purpose. Among them are techniques for preparing sowing and planting material, sowing and planting, tillage and fertilizing, and many, many others; each of them has its own greater or lesser influence on the creation of a crop by the plant.