Influence of topsoil manure mix on affects germination in Pea and Onion seeds

¹ Center of Shared Scientific Equipment «Persistence of microorganisms», Institute for Cellular and Intracellular Symbiosis, Orenburg Federal Research Center of the Ural Branch of the RAS, Orenburg, Russia
² Municipal Educational Autonomous Institution (MEAI) Lyceum № 1, Orenburg, Russia

^* Corresponding author: zhos-rus@mail.ru

Abstract

Nutrient-rich southern chernozems have lost a significant part of their fertility during their exploitation in agrocenoses. The decrease in the fertility of the surface layer of soils in the steppe landscapes of the Orenburg Cis-Urals contributed to a decrease in the yield of grain crops and an increase in the volume of applied mineral fertilizers. The use of reverse technology of mechanical tillage contributed to the weathering of the surface fertile soil layer and its degradation. Plowing of the Orenburg steppes for agrocenoses led to a decrease in the number of wild ungulates and their adaptation to new living conditions in agrocenoses. Our work was devoted to modeling the process of the influence of the soil-manure mixture of the surface layer of southern chernozem and the manure of large phytophages on the germination of pea and onion seeds in laboratory conditions. Changes in the composition of bacterial communities during the preparation of the soil-manure mixture are one of the factors influencing the germination and morphometric growth parameters of onion and pea seeds. There is no doubt that the nutritional composition of the manure of large phytophages is of decisive importance for stimulating the growth of onions and peas. However, the differences we have shown in the bacterial composition of soil-manure mixtures of two large phytophages raises the problem of increasing or decreasing the nutritional value of the soil-manure mixture depending on the composition of the microbial communities of the manure of large phytophages.