Studies on the influence of basic tillage systems on changes in soil fertility and biometric indicators of cultivated crops have been conducted at the Federal State Budgetary Scientific Institution “National Grain Center named after P. P. Lukyanenko” in the experimental fields of the Agriculture laboratory since 2008. The article presents part of the studies for the period from 2018 to 2020, during which it was determined that the minimum mulching basic tillage system with decompaction is not inferior in agronomic efficiency to the traditional system. Observations of the growth and development of corn for grain showed the priority of this tillage. The grain yield obtained over the years of research (2018-2020) on decompaction technology was formed at the level of traditional tillage (conditionally accepted as control) and amounted to 55.9 c/ha, significantly exceeding the minimum by 2.2 c/ha, while having a high content of crude protein in the grain - 11.2%.