Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 2
Written by Gergana MLADENOVA, Boyka MALCHEVA, Milena YORDANOVA
The purpose of the article is to present data from a comparative study of the composition and activity of the microflora from the rhizoplane and rhizosphere in leeks, red beets, chard, spinach, dill, parsley, and common vetch, as well as control sample without vegetation. The experiment was conducted at the training field at the University of Forestry, Sofia, Bulgaria. Microorganisms from the rhizoplane (the surface of the roots) and the rhizosphere, near the roots, were studied. Growing leeks increases the biogenicity of roots and soil to the highest degree. The main share in the composition of the total microflora is occupied by non-spore-forming bacteria in all variants. In the vegetated variants, the catalase value was highest when growing leek, followed by parsley. Cellulase activity is highest in red beets and leeks. The studied microbiological and enzymatic indicators are sensitive indicators of soil fertility and qualitative development of the analyzed crops. The activity of the rhizosphere and rhizoplane microflora depends on the humidity in the root zone, and the quantity of microorganisms is not the only and independent prerequisite for their activity.
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