A. E. Badin, T. P. Logoshina
State Center of Agrochemical Service “Tambovsky”, ul. Moskovskaya, 2b, Tambov, 392000, Russian Federation
Abstract. The article summarized the results of multi-years (from 1971 to 2018) monitoring of soil fertility in the Tambov region. The soil cover of the region was represented by various soil types. The largest part of the farmland was occupied by chernozems. It amounted to 85.8%. The particle-size analysis showed the predominance of clay and heavy loamy soils. As on January 1, 2019, acidic soils occupied 76.4% of arable land in the Tambov region. The average weighted content of humus was 6.55%; phosphorus content was 89.1 mg/kg; potassium content was 105.0 mg/kg. During the study period, the proportion of acidic soils increased by 33.5%. In this case, the share of neutral and close to neutral soils decreased to 26.0% by 2002–2008; the share of medium acid soils increased to 26.2%. The weighted average acidity index (pH(KCl)) decreased from 5.7 units to 5.3 units. The highest rate of increase in the share of acidic soils (2.2% per year) was noted during the years of maximum use of mineral fertilizers (from 1981 to 1990). The intensive use of chemicals, starting from 1976, provided an increase in the weighted average content of mobile phosphorus in soils of 19.3 mg/kg (up to 95.1 mg/kg) by 1996–2001. After a sharp (50-fold) reduction in the use of mineral fertilizers at the end of the 20th century, the weighted average content of this mineral element in the soils decreased by 6.0 mg/kg by 2019. The potassium balance in the region’s soils was negative during the entire study period. During this period, its weighted average content decreased from 108.7 mg/kg to 105.0 mg/kg.
Keywords: soil fertility; mobile phosphorus; metabolic potassium; soil solution reaction (pH); humus; fertilizers; arable land nutrient balance.
Author Details: A. E. Badin, Cand. Sc. (Agr.), director (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); T. P. Logoshina, chief agrochemist.
For citation: Badin A. E., Logoshina T. P. Soil Fertility Monitoring in the Tambov Region. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 10. Pp. 18–21 (in Russ.). DOI: 10.24411/0235-2451-2019-11004.