S. V. Lukin1, E. A. Prazina2
1Center of Agrochemical Service “Belgorodsky”, ul. Shchorsa, 8, Belgorod, 308027, Russian Federation
2Belgorod State National Research University (NRU “BelSU”)ul. Pobedy, 85, k. 14, Belgorod, 308015, Russian Federation
Abstract. The purpose of the research was to examine the regularity of changes in the acidity of arable soils in the Central Chernozem Region (the case of the Belgorod region) during prolonged agricultural use. The paper analyzes the data of the 1964–2018 agrochemical survey and the 2013–2018 erosion survey of arable soil, conducted in the southwestern part of the Central Chernozem Region on the territory of the Belgorod region. The soil cover in the forest-steppe zone was mainly represented by typical and leached chernozem. In the steppe zone, it was represented by ordinary chernozem. In 2015–2018 in the Belgorod region, the proportion of acid soils decreased by 10.4%, compared with the results of the agrochemical survey of 2010–2014, including the proportion of medium acid soils, which increased by 6.8%. This was due to the liming of acid soils on the area of 299,800 ha, which was 30.2% of the total Russian level. According to the results of the last cycle of the agrochemical survey, the most of acidic soil was found in Borisovsky (73.0%), Ivnyansky (72.3%), Rakityansky (64.7%) and Shebekinsky (62.2%) districts. They were completely located in the territory of the Ukrainian forest-steppe soil province, which is characterized by the best moisture conditions for the Belgorod region. A steady trend to alkalization was registered in the ordinary chernozems located in the steppe zone. Depending on slope exposure on lightly washed chernozems typical for Ukrainian steppe soil province pH(KCl) value increased on average, compared with watersheds, by 0.12–0.46 units. On medium washed chernozems it increased by 0.58–0.90 units on average.
Keywords: soil acidity; liming; chernozem; defecate; ameliorant.
Author Details: S. V. Lukin, D. Sc. (Agr.), director (е-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); E. A. Prazina, post graduate student (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Lukin S. V., Prazina E. A. Monitoring of Soil Acidity in the Central Chernozem Region of Russia. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 4. Pp. 8–11 (in Russ.). DOI: 10.24411/0235-2451-2019-10402.