Assessment of the silicon compounds effect on disease resistance and productivity of spring barley with a decrease in pesticide load in the south of Russia

Abstract

In a small-plot field experiment, the effect of different forms of silicon compounds (tetraethoxysilane (TES) and sodium silicate) and processing methods (seeds and plants) on disease incidence and productivity of spring barley varieties was studied and the effect of diseases on productivity was evaluated. It was found that the use of silicon-containing compounds separately and in a mixture with a reduced consumption rate of fungicide led to a decrease in the infestation of barley with root rot and leaf spots. The lowest degree of disease development was observed when using a fungicide and mixtures of TES and sodium silicate with a reduced consumption rate of fungicide. The maximum yield increases were obtained by combining two types of treatment with silicon - seeds and plants. When processing seeds, the use of sodium silicate was more effective. The relationship between the development of diseases and the productivity of spring barley, primarily grain biomass, is estimated in most cases as strong and medium.

Improvement of the Integral Indicator of the Ecological and Toxicological Assessment of the Danger of the Use of Pesticides in Agriculture and the Creation of an Information System for Their Monitoring

“…In our previous field of studies, it was found that the use of silicon compounds such as tetraethoxysilane (TES) and sodium silicate in tank mixtures with pesticides increased the effectiveness of the latter and allowed reducing the application rates of fungicides by 50% and insecticides by 20% without reducing the effectiveness of protective agents [16,17]. The decrease in application rates will also affect the indicator of the relative ecological and toxicological danger of use: for fungicides, it will decrease by two times, and for insecticides-by 20%.…”

“…In Russia, this is the state catalog of pesticides and agrochemicals approved for use on the territory of the Russian Federation [15]. Therefore, technologies that allow reducing the application rates of pesticides without loss of effectiveness against pests are promising; for example, the use of pesticides with silicon compounds [16,17]. Currently, information technologies are increasingly being used in agro-ecological monitoring [18,19].…”

Hazard assessment of pesticides’ application in agroecosystems

“…Additive agents include various adhesives and film-forming agents; some of them have their own biological activity. The studies have shown that TES and sodium silicate have contributed to increasing the plants' resistance to adverse factors: diseases and pests, moisture deficiency (drought) [12,13,14]. The use of selenium compounds is also promising; those increase both the productivity of plants and their resistance to stress [15,16].…”

“…The use of selenium compounds is also promising; those increase both the productivity of plants and their resistance to stress [15,16]. Combined use of silicon compounds with pesticides allowed to reduce the consumption rates of fungicides by 50%, insecticides -by 20% without reducing the effectiveness of protective equipment [12,13,14].…”

The effect of new protective-stimulating complexes based on plant waste on the yield of spring wheat under stressful conditions

“…[7][8] One of the aspects of the modern agro-industrial complex aimed at reducing the influence of abiotic environmental factors on agricultural crops is the improvement of plant nutrition systems through the use of various means to reduce the effect of oxidative stress on plants caused by these factors. [9][10][11]…”