The effect of bio-preparations on soil respiration

Abstract

Bio-preparations regenerate soil vitality and biodiversity, making them an excellent alternative to modern agriculture. Biological products reduce the energy consumption, financial costs and ecological footprint in agriculture. In preside days, plenty biopreparations are used in agriculture, however most of them are not deeply investigated. Therefore, the aim of the research was to determine how the biological preparations and their mixtures affect CO2 emissions from the soil in a North Eastern Europe climatic conditions. Field experiment was carried out in 2015-2017 at the Experimental Station of Vytautas Magnus University Agriculture Akademy, Ag (54° N, 23°E), Lithuania. Seven different bio-preparations and its mixtures were tested. The CO2 emissions from the soil during investigations period ranged from 0.62 to 11.07 μmol m-2 s-1. Bio-preparations with active microorganisms caused increase of soil respiration. In most cases, soil respiration depended on soil aeration porosity and meteorological conditions. In pure soil and wet vegetation conditions, the respiration of soil was significantly higher.