EFFECT OF DIFFERENT TILLAGE ON SOIL BIOLOGICAL PROPERTIES

Abstract

This research examines the effects of tillage on soil biological properties. The research was conducted in a long-term stationary field experiment, which is located at the Experimental Station of the VMU Agricultural Academy. The research was continued, the results of the 2022 tests are presented in this paper. The purpose of the study is to evaluate and compare the effects of simplified tillage and direct sowing on soil biological properties. Different tillage systems were studied in the experiment: 1. Conventional deep plowing with a depth of 23–25 cm (CP) (control - comparative variant); 2. Shallow plowing with a depth of 12–15 cm (SP); 3. Deep plowing (cultivator with boom shares) 23–25 cm deep (DC); 4. Shallow plowing (cultivator with arrow harrows) at a depth of 12–15 cm (SC); 5. Direct sowing (into the stubble with tillage up to 5 cm) (NT). Crop - a summer crop form of common barley (Hordeum vulgare L.), in which different tillage methods are applied. During the research period, applied different tillages did not have a significant effect on the amount of CO₂ concentration in different soil layers. In the upper (0–10 cm) soil layer studied, the CO₂ concentration in the deep-purged fields is higher from 0.001 to 0.185 percents. units, compared to deep plowing. In the deeper (10-20 cm) soil layer in direct sowing fields, the amount of CO₂ concentration is lower from 0.035 to 0.210 percents. pcs than in deep plowed fields. During the vegetation period of spring barley, it was found that the concentration of O₂ is higher by 0.04 percent pcs in the fields of direct sowing in the upper and 0.18 percent. pcs in the lower studied soil layer, compare with deep plowed fields. In the fields of direct sowing, the activity of sucrose in the studied soil layers is significantly higher by 2,0 and 1,7 times, than in the fields of the control variant.