COMPOSITION, PROPERTIES AND RECYCLING OF VEGETATIVE POPLAR AFTER REMOVAL OF EXTRAC-TIVES. REPORT 3. OBTAINING BIOIOGICAL PRODUCTS BASED ON FUNGI OF THE GENUS TRIGHODERMA
UDC 630.86 + 674.031.623.237.7:630.86
Abstract
The purpose of this work was to assess the suitability of solid and liquid waste generated during processing of the vegetative part of poplar as substrates for biochemical processing in order to obtain biologics for various purposes. For the study, we used post-extraction residues, as well as a cubic liquid formed after distilling essential oils and extracting alcohol-soluble substances from the vegetative part of the balsamic poplar (Populus balzamifera L.). Siberian strains of fungi of the genus Trichoderma used as a biodestructor.
Studies have shown that the vegetative part of poplar and its individual elements are an available substrate for the growth of mycelial fungi. The high yield of spores (4.5×109 spor/g) and the formation of humic substances (11%) used as plant growth stimulators during solid-phase cultivation of the MG-97 strain of Trichoderma fungi gives grounds to use the vegetative part of poplar as a technological raw material for obtaining a biological product of the "Trichodermin" type or soil humification. Depending on the purpose of the preparations, the duration of cultivation can vary: for obtaining agricultural biologics up to 15 days, more – for soil humification. The inclusion of a cubic liquid at the stage of substrate humidification allows to obtain a biological product with a higher spore titer (5×109 spor/g), makes it possible to close the water consumption cycle and make the technology of processing the vegetative part of poplar waste-free.
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