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The influence of different systems of agriculture on the complex of electrophysical (Electrical Conductivity, Total Dissolved Solids, Salinity) and acid-alkaline parameters (pH water, pH salt, hydrolytic acidity) of typical deep mid-loam chernozems on loess during the year (spring, summer, autumn) is studied in the article. Materials and Methods. The study of electrophysical parameters was performed using a conductometer-solemeter (EZODO–8200 M) in soil-water suspensions (1:5). The pH water, pH salt and hydrolytic acid was further determined. The object of study was the typical deep mid-loam chernozem on loess of the Left Bank of the Forest Steppe of Ukraine within the Zinkiv district of Poltava region. The individual soil samples selected in 2018 were analyzed from depths: 0–10, 10–20, 20–30 and 30–40 cm. Variants included: organic farming system (siderate), fallow (over 20 years without tillage), organic farming system (compost), intensive farming system (mineral fertilizers). Results. Established that the electrical indicators of typical chernozem change significantly depending on depth, season and farming systems. The electrical conductivity ranges from a minimum of 21,2 μS/cm in the 30–40 cm layer of the intensive farming system variant to a maximum of 159,3 μS/cm in the 20–30 cm layer of the organic farming system with sidereal УДК 631.437.31:631.445.4 DOI 10.31395/2310-0478-2020-1-11-16

SEASONAL DYNAMICS OF ELECTRIC CONDUCTIVITY OF TYPICAL CHERNOZEMS UNDER DIFFERENT SYSTEMSOF AGRICULTURE