INFLUENCE OF DIFFERENCE SILICON VARIETIES ON SPRING WHEAT GROWTH

Abstract

The market for silicon preparations is growing every year, and the range of studies to study its effect on crops is expanding. The purpose of this work is to study the effect of two sources of silicon (amorphous silicon Kovelos-Sorb and sodium metasilicate) on the biometric parameters of spring wheat. Wheat cultivation was carried out under laboratory conditions while modeling temperature and water stresses. The source of silicon was introduced at the stage of normalization into a liquid-phase biogenic preparation, LPB, developed by the Biotechnology Department of VNIIMZ. Preparations LPB-K (with amorphous silicon) and LPB-S (with sodium metasilicate) were used for spraying plants in the phase of wheat seedlings. It was revealed that the increase in the biometric parameters of wheat plants consisted of the influence of the biogenic preparation of LPB itself and silicon oxide. When modeling temperature stress, silicon oxide had a greater influence, and when water stresses, a biogenic preparation had a greater effect. Sodium metasilicate reduced the qualitative characteristics of the original preparation, therefore, when using it, the increase in wet and dry plant biomass was less than in the case of spraying seedlings with LPB-K. Based on the data obtained on the biometrics of wheat plants, the optimal concentration of silicon oxide in the LPB preparation was determined - 0.5 % for both forms of silicon. The maximum responsiveness of plants to wheat spraying with the resulting preparations was noted when modeling a decrease in temperature after germination: the increase in wet and dry biomass from the use of LPB-K (0.5%) was 9.2 and 14.0 %, from LPB-S (0.5 %) 10.0 and 11.9 %. When using Kovelos-Sorb as a source of silicon, a statistically significant increase in raw and dry wheat biomass relative to the initial LPB was more often than sodium metasilicate.