THE EFFECT OF COMPONENTS OF PLANT RAW MATERIALS INCLUDED IN NUTRIENT MEDIA ON PSEUDO-MONAS FLUORESCENS USED IN BIOFERTILIZERS
UDC 663.11
Abstract
The relevance of the work lies in the fact that for the production of effective inexpensive fertilizers containing microorganisms, it is important to investigate the influence of various factors, in particular a nutrient medium containing plant raw materials, on the growth or death of microorganisms.
The aim of the work is to determine the effect of macro-, microelements, phenolic compounds contained in plant raw materials that are part of nutrient media on Pseudomonas fluorescens.
The work determined the content of macro-, microelements —(Cd, Pb, As, Cu, Fe, Zn, Ag, Al, Ba, Be, Ca, Co, Cr, K, Mg, Mn, Mo, Na, Ni, Sb, Se, Sn, Sr, Ti, V, P, B, Li, W, La, Si, Bi) and the total content of phenolic compounds in aqueous extracts of horsetail (root) (Equisetum arvense), burdock (root) (Arctium lappa common golden millet (Centaurium erythraea), common ginseng (root) (Panax ginseng), Chinese lemongrass (fruit) (Schisandra chinensis), papaya (Carica papaya), cowberry (leaf) (Vaccinium vitis-idaea), blueberry (leaf) (Vaccinium myrtíllus), European olive (leaf) (Olea europaea), sage officinalis (Salvia officinalis), bearberry (leaf) (Arctostaphylos uva-ursi), winter-loving umbellate (Chimaphila umbellata), white willow (bark) (Salix alba), medicinal hemophlebus (Sanguisorba officinalis) before and after the introduction of Pseudomonas fluorescens bacteria. A decrease in the content of macro- and microelements in plant matter in some cases up to 99% has been established.
The ability of Pseudomonas fluorescens to accumulate toxic elements Zn, Cu, Pb, Mn, As, Sr, Cr from plant raw materials was noted.
The detection of the highest content of heavy metals and toxic elements in hemophlebone, sage, willow may indicate the possibility of their use for soil cleanup and as accumulator plants in phytoremediation.
It has been determined that Pseudomonas fluorescens is capable of decomposing phenolic compounds in plants up to 22–38%.
It has been shown that some types of plant raw materials, as a source of macro-, microelements, and carbon for bacteria, can be effectively used as a component for a nutrient medium.
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