Abstract:
Silicon plays the significant role in the growth and development of plants, their resistance to stress conditions. However, there
is limited research on the content of various forms of silicon in soils, the relationship with soil cations, which is particularly relevant
in the context of intensive agriculture and climate aridization in Ukraine. The purpose of the present study was to determine the
content of silicon compounds of different mobility in the arable soils of the Khmelnytsky region, the spatial variation of these
parameters, and to detect the dependence between the content of silicon compounds and soil particle size. The study was
performed at the area of LLC "Lotivka Elit" of Shepetivka district of Khmelnitsky region in field crop rotation. We determined for
soil samples: particle size distribution and content of fractions of granulometric elements of different sizes, pH of salt extraction
(1,0 M KCl solution), humus content, calcium and magnesium exchangeable compounds by extraction with 1,0 M KCl solution. The
results showed that the content of silicon compounds in soils depends on the particle size distribution of soil, the value of
exchangeable acidity, humus content, and the composition of exchangeable cations.
