Changes in gray forest soil organic matter pools under anthropogenic load in agrocenoses
Laen...
Kuupäev
2023
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
The relevance of research is determined by a complex of factors that shape the change
in the humus system of gray forest soil dynamics (content, total reserves, values variability of
labile and stable humus pools, humification processes direction) under the influence of mineral
fertilizers and chemical reclamation in the long-term ecotope conditions. The purpose of the
research was to assess the impact of systematic anthropogenic loading on changes in soil organic
matter pools. Research methods included long-term stationary studies, laboratory determination
of organic matter content and humus group composition, and statistical data analysis. It has been
proven that liming practically did not contribute to the increase of the total humus content,
however, due to the coagulating effect, certain changes in labile and more stable forms of humus
substances occurred in its qualitative composition. It has been established that the cultivation of
crops сultivation in crop rotation with a purely mineral fertilizer system did not lead to a
significant organic matter accumulation in the soil, despite the increase in crop yield levels under
appropriate conditions and the accumulation of a larger vegetative mass of root and post-harvest
residues entering the soil, but its losses were significantly reduced. The use of organic
components (green manure, by-products) in combination with moderate rates of mineral
fertilizers on a liming background (humus content 1.63%), provided a clear tendency to expand
humus reproduction by 0.16%, compared to the initial level, and by 15% and 12% more than in
the version with no fertilizers and just mineral system. Under such a fertilizing system, there is a
tendency to increase more stable humic acids. The increase in humification of organic matter was
achieved through the application of fertilizers in limed backgrounds. In this case, the humus
formation type exhibited characteristics of humate-fulvate, with a value of 0.9, which is
characteristic of soils of forest origin in the northern Forest-Steppe region with the presence of
soil-forming factors specific to that territory. The article materials are of practical value for
agricultural producers in the development of an innovative strategy for preserving the
environment safety, and soil fertility under the influence of elements of energy-saving
technologies for crops.
Kirjeldus
Received: August 6th, 2023 ; Accepted: September 30th, 2023 ; Published: October 24th, 2023 ; Correspondence: o.havryliuk@nubip.edu.ua
Märksõnad
humus, ecotope, agrocenosis, soil fertility, humic acids, fertilizers, articles