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The purpose of research is the creation of apricot fruit varieties able sustainably fructify in the environment of forest-steppe of the Middle Volga Area. Experimental studies were carried out on the Cultivar Collector of Samara Research Institute of Horticulture and Medicinal Plants «Zhiguli Gardens» from 1985 to 2010. Since 2011up to present the work has been performed in a Samara State Agricultural Academy on the basis of horticultural farm Ltd. «Kutuluk» Bogatovskiy district. The objects of research were different varieties of apricot eco-geografic groups of selected forms of national selection and varieties bred in Samara Research Institute «Zhiguli gardens». The study, selection and transfer of hybrid seedlings to the state variety-testing were performed, under the methodology of selection and program of Cultivar study of fruit, berry and nut crops. As a result of long years of breeding under interkind hybridization in Samara Region 9 apricot varieties have been developed and transmitted to state variety-testing , 4 of which have been included into the State Register of the Russian Federation. In a period of organic resting the varieties are able without significant damage of the wood resist severe winters with a minimum temperatures at –39… –40°C. Favorable microzones for apricot cultivating have been identified, the yield, diseases resistance and technological qualities of fruit studied. As a result of 16 years of observations the apricot hasn’t fructified for 6 years. Because of the flower buds frozen in severe winters there was no yield 3 times, 3 times the harvest perished as a result of freezing of flower buds from frost occurred after long thaws. Variety differences of resistance to moniliosis shock were revealed. Such a resistance out of Samara region fruit the sort of Samara apricots has got. Samara apricots are smaller in size than any southern ones, but the biochemical composition and fruit taste compete to the latter.

The purpose is to justify the use of minimum and zero tillage in conditions of forest-steppe Zavolzhye region from the position of the biological activity of the soil. One of the factors forming and determining the fertility of the soil, is the activity of microorganisms that inhabit it, the active surface which reaches up to several hundred acres for 1 ha of surface topsoil. Important role in building of soil fertility is the number of major groups of microorganisms, which, being the catalysts of metabolism, objectively reflect the nature of biochemical processes. Another academician S. P. Kostychev (1937) pointed out that without the study of biodynamics the knowledge of the soil, especially from the agronomic point of view, may not be complete. Microorganisms occupy a key position in maintaining biochemical capacity of the soil, so monitoring of soil microflora is essential for the maintenance and reproduction of its fertility. This work is devoted to studying the role of soil microorganisms in the process of maintaining and reproduction of soil fertility in the development of new technologies in agriculture. The article presents data on the effect of basic tillage on the number of different groups of soil microorganisms (micromycetes, bacteria, actinomycetes), Shows the number of soil microorganisms, such as micromycetes (mold fungi) and bacteria are significantly influenced by seasonal changes in temperature and humidity than the soil treatment methods. From which it follows that the reduction of the mechanical load on the soil in the forest-steppe of Zavolzhye a significant impact on the number of major groups of microorganisms has not.