DEVELOPMENT OF A METHOD FOR DISINFECTION OF SOIL FOCI

Abstract

Summary. Disinfection and elimination of anthrax soil foci that interfere with the long-term development of the state is one of the urgent problems for many countries of the world. In the course of the work, experimental studies were carried out on the possibility of disinfection of the surface and deep layers of animal burial grounds using the method of drilling and moistening the soil with a solution. For the study, three experimental sites were prepared, measuring 1.0 x 1.0 m, on which the cultivated soil was naturally occurring of a gray-earth type. Each test site included 4 pits at a distance of 1.0 m, 80.0 cm and 50.0 cm from each other, respectively. After filling the wells and completely moistening the surface, a plastic film was additionally placed on top of each pad to prevent liquid evaporation. To control the moistening of the entire volume of soil for 3 days, control drilling of control wells was carried out daily at each experimental site: in the center between four pits; between two adjacent wells; and also away from the extreme pit at various distances. Experiments have shown that for complete tillage, i.e. for the entire depth of the soil hearth, the most optimal distance between the pits is 50 cm. At the same time, the volume of solution required to fill one well is from 35.0 to 38.0 liters of solution, with a hole diameter of 15 cm and a drilling depth of 3.0 m. In addition, for a complete one-time moistening of the surface of the treated area, the size of 1.0 x 1.0 m requires from 35.0 to 37.0 liters of solution. In general, for complete and high-quality humidification, it is necessary to fill each pit three times with an interval of 24 hours and also moisten the surface of the entire experimental site three times.