STUDY OF THE INFLUENCE OF HYPERTHERMAL TREATMENT OF SALAD SEEDS AND CHEMICAL CONTAMINATION OF SOILS ON GROWTH INDICATORS OF SPROUGHTS

Abstract

Purpose. Establishing the influence of hyperthermal treatment of lettuce seeds and chemical contamination in the soil on the growth rates of seedlings. Methodology. The paper determines the level of influence of two factors on the growth characteristics of lettuce used for biotesting of soil contaminated with petroleum products. In accordance with the purpose of the study, lettuce seeds were pre-heat treated at a temperature of 60 C. Processing time - 5 minutes Pre-viously, a study was conducted to select the inhibitory and hormesis action of heat treatment (heat treatment time). After heat treatment, the envelopes with the seeds were dried. Next, lettuce seeds were sown in the plant. Originality. If we consider that heat treatment simulates the action of certain factors, or the complex action of certain factors, it means that we must take this into account and use certain sensitized objects in the practice of biotesting. Practical meaning. The effect of chemical soil contamination (aviation kerosene) on the sensitized plant object has been determined. Namely, lettuce used in the practice of biotesting of soil contaminated with petroleum products. The dependence of lettuce growth characteristics on the level of excess aviation fuel content in the soil is determined. Conclusions. As a result of the analysis of the received experimental data it is established that for the minimum of the used concentrations of pollu-tant (1 OAC for aviation kerosene) the sensitizing effect of additional influence of another factor - by nature - hyper-thermia is possible. This fact requires the improvement of the practice of determining the OAC, because in real condi-tions, the objects are exposed to a set of factors, the negative effects of which may be mutually reinforcing.