Soil cover structure and transformation of morphometric parameters of Haplic Chernozems under no-tillage

The results of the field experiment have been analyzed, it was set up on two experimental fields (with an area of 2.4 hectares each), where two different agricultural techniques – traditional and no-till – were applied. Diagnostics of morphometric parameters of typical chernozems such as: the thickness of the A1 horizon, A1 + AB horizons and the depth of carbonates reaction with 10% HCl, has shown that some changes in soils and soil cover had occurred in the fields over 8 years. The integral indicator of soil productivity is the thickness of the humus horizon, it demonstrated trends to decrease and increase in the soil cover structure of the experimental fields with different compositions of chernozem subtypes. The trends result from both climate change and periodic dry periods, which are not typical of the region, and from the change of traditional technology to no-till. The carbonates leaching from chernozem profiles in all variants of the experiment decreased, which correlates well with climatic indicators, changing with the seasons of the year. Chernozems with thin humus layaer and reacting with HCl close to the surface do not require liming. The revealed changes are not statistically significant, they reflect the resistance of chernozems to the variability of natural and anthropogenic factors of soil formation. Crop residues on the soil surface under no-tillage reduce physical evaporation, which contributes to moisture accumulation in the soil. The use of cover crops in winter also increases the moisture reserves, which are consumed by the plants during the summer growing season. Information on the transformation of morphometric parameters allows making temporal and spatial corrections in the applied agricultural practices (crop rotation, fertilization, the use of cover crops, herbicides and pesticides).

1. Avdeyeva T.N., Markina L.G., Evolyutsiya pakhotnykh chernozemov Kurskoy oblasti (Evolution of arable chernozems of the Kursk region), In: Chernozemy Tsentral'noy Rossii: genezis, evolyutsiya i problemy ratsional'nogo ispol'zovaniya (Chernozems of Central Russia: genesis, evolution and problems of rational use), Voronezh: “Nauchnaya kniga”, 2017, pp. 72–76.

2. Bazykina G.S., Ovechkin S.V., Migration-mycelial chernozems in biospheric cycles within the Kursk region, Dokuchaev Soil Bulletin, 2012, Vol. 70, pp. 3–18, DOI: 10.19047/0136-1694-2012-70-3-18.

3. Belobrov V.P., Struktura pochvennogo pokrova gumidnykh i aridnykh oblastey subtropikov i tropikov: Avtoref. dis. ... dokt. s.-kh. nauk (The structure of the soil cover of the humid and arid regions of the subtropics and tropics, Extended abstract of Dr. agric. sci. thesis), Moscow, 1989, 48 p.

4. Belobrov V.P., Yudin S.A., Kholodov V.A., Yaroslavtseva N.V., Yudina A.V., Dridiger V.K., Stukalov R.S., Klyuyev N.N., Zamotayev I.V., Yermolayev N.R., Ivanov A.L., Kholodov V.A., Izmeneniye fizicheskikh svoystv chernozemov pri pryamom poseve (Changes in the physical properties of chernozems during no-till), Pochvovedenie, 2020, No. 7, pp. 880–890.

5. Belobrov V.P., Dridiger V.K., Yudin S.A., Yermolayev N.R., K voprosu o diagnostike i zashchite pochv ot deflyatsii v Stavropol'skom kraye (On the issue of diagnostics and protection of soils from deflation in the Stavropol Territory), Agrarniy vestnik Urala, 2021, No. 2, pp. 12–23.

6. Belobrov V.P., Yudin S.A., Aydiyev A.Yu., Ermolayev N.R., Lebedeva M.P., Abrosimov K.N., Borisochkina T.I., Voronin A.Y., Plotnikova O.O., Chernozem tipichnyy. Pryamoy posev, Kurskaya oblast'. Opyt, rotatsiya 1.1. (Chernozem typical. Direct sowing, Kursk region. Experience, rotation 1.1.), Ivanov A.L. (Ch. Ed.), Moscow: “GEOS”, 2021, 127 p.

7. Borisov B.A., Baybekov R.F., Rogozhin D.O., Yefimov O.E., Izmeneniye pokazateley sostoyaniya organicheskogo veshchestva i fizicheskikh svoystv chernozema yuzhnogo pri perekhode ot traditsionnoy k nulevoy obrabotke (Changes in indicators of the state of organic matter and the physical properties of southern chernozem during the transition from traditional to notill processing), Zemledeliye, 2018, No. 8, pp. 14–116.

8. Vlasenko A.N., Vlasenko N.G., Vliyaniye tekhnologii No-till na soderzhaniye pitatel'nykh elementov v chernozeme vyshchelochennom lesostepi Zapadnoy Sibiri (Influence of No-till technology on the content of nutrients in the leached chernozem of the forest-steppe of Western Siberia), Zemledeliye, 2016, No. 3, pp. 17–19.

9. Vlasenko A.N., Vlasenko N.G., Kudashkin P.I., Izmeneniye pokazateley plodorodiya vyshchelochennogo chernozema lesostepi Priob'ya pri ispol'zovanii tekhnologii No-till (Change in fertility indicators of the leached chernozem of the forest-steppe of the Ob region using the No-till technology), Agrokhimiya, 2019, No. 12, pp. 16–21.

10. Voronin A.N., Vliyaniye razlichnykh sistem obrabotki pochvy na dinamiku soderzhaniya podvizhnogo fosfora v chernozeme tipichnom (Influence of various tillage systems on the dynamics of mobile phosphorus content in typical chernozem), Agrokhimiya, 2014, No. 5, pp. 32–37.

11. Dayneko E.K., Struktura pochvennogo pokrova Tsentral'noChernozemnogo zapovednika imeni V.V. Alekhina i ego okrestnostey (The structure of the soil cover of the Central Chernozem Reserve named after V.V. Alekhin and its environs), In: Khimiya, genezis i kartografiya pochv (Soil chemistry, genesis and mapping), 1968, pp. 165–170.

12. Report on the state and protection of the environment of the Kursk region in 2020, Kursk, 2021, 214 p.

13. Dridiger V.K., Prakticheskiye rekomendatsii po osvoyeniyu tekhnologii vozdelyvaniya sel'skokhozyaystvennykh kul'tur bez obrabotki pochvy v zasushlivoy zone Stavropol'skogo kraya (Practical recommendations for mastering the technology of cultivating agricultural crops without tillage in the arid zone of the Stavropol Kray), Stavropol': SNIISKH, 2016, 80 p.

14. Dridiger V.K., Ivanov A.L., Belobrov V.P., Kutovaya O.L., Vosstanovleniye svoystv pochv v tekhnologii pryamogo poseva (Restoration of soil properties in no-till), Pochvovedenie, 2020, No. 9, pp. 1111–1120.

15. Dridiger V.K., Belobrov V.P., Antonov S.A., Yudin S.A., Gadzhiumarov R.G., Likhodiyevskaya S.A., Yermolayev N.R., No-till: effektivnaya zashchita pochv ot erozii (No-till: effective protection of soils from erosion), Resursosberegayushcheye zemledeliye, 2021, No. 49(01), pp. 39–45.

16. Edinyy gosudarstvennyy reyestr pochvennykh resursov Rossii. Versiya 1.0. (Unified State Register of Soil Resources of Russia. Version 1.0.), Moscow, Pochvennyy institut im. V.V. Dokuchayeva, 2014, 768 p.

17. Ivanov A.L., Lebedeva I.I., Grebennikov A.M., Factors for anthropogenic transformation of chernozems, Dokuchaev Soil Bulletin, 2013, No. 72, pp. 26– 46, DOI: 10.19047/0136-1694-2013-72-26-46.

18. Ivanov A.L., Kulintsev V.V., Dridiger V.K., Belobrov V.P., O tselesoobraznosti osvoyeniya sistemy pryamogo poseva na chernozemakh Rossii (On the feasibility of developing a system of direct sowing on the chernozems of Russia), Dostizheniya nauki i tekhniki APK, 2021, No. 4, Vol. 35, pp. 8–16.

19. Kallegari A., Ustoychivoye sel'skoye khozyaystvo baziruyetsya na tekhnologii no-till (Sustainable agriculture based on no-till technology), Resursosberegayushcheye zemledeliye, 2021, Vol. 1(49).

20. Karmanov I.I., Bulgakov D.S., Metodika pochvenno-agroklimaticheskoy otsenki pakhotnykh zemel' dlya kadastra (Methods of soil-agro-climatic assessment of arable land for the cadastre), Moscow: Pochv. in-t im. V.V. Dokuchayeva, 2012, 122 p.

21. Kiryushin V.I., Metodicheskiye rekomendatsii po razrabotke minimal'nykh sistem obrabotki pochvy i pryamogo poseva (Guidelines for the development of minimal systems for tillage and no-till), Moscow: “Izdatel'stvo MBA”, 2019, 136 p.

22. Klassifikatsiya i diagnostika pochv Rossii (Classification and diagnostics of Russian soils), Smolensk: Oykumena, 2004, 342 p.

23. Klassifikatsiya i diagnostika pochv SSSR (Classification and diagnostics of soils of the USSR), Moscow: Kolos, 1977, 223 p.

24. Lebedeva I.I., Chernozemy Vostochnoy Evropy: Avtoref. dis. ... dokt. geogr. nauk (Chernozems of Eastern Europe, Extended abstract of Dr. geogr. sci. thesis), Moscow, 1992, 49 p.

25. Lebedeva I.I., Humus and carbonate accumulations as diagnostic criteria in the chernozems of Eastern Europe, Dokuchaev Soil Bulletin, 2011, Vol. 68, pp. 3–18, DOI: 10.19047/0136-1694-2011-68-3-18.

26. Lebedeva I.I., Koroleva I.E., Grebennikov A.M., The concept of evolution of chernozems in agroecosystems, Dokuchaev Soil Bulletin, 2013, Vol. 71, pp. 16–26, DOI: 10.19047/0136-1694-2013-71-16-26.

27. Levchenko E.A., Kozlov D.N., Smirnova M.A., Avdeeva T.N., Diagnostic properties and classification of forest steppe soil the Vorona-Tsna interfluve of the Provolzhskaya upland, Dokuchaev Soil Bulletin, 2017, Vol. 88, pp. 3–26, DOI: 10.19047/0136-1694-2017-88-3-26.

28. Ogleznev A.K., Kupriyan T.A., Norkina T.E., Metodicheskiye rekomendatsii po otsenke kachestva i klassifikatsii zemel' po ikh prigodnosti dlya ispol'zovaniya v sel'skom khozyaystve (Methodological recommendations for assessing the quality and classification of land according to their suitability for use in agriculture), Moscow: Russkaya otsenka, 2003, 169 p.

29. Petrova L.N., Dridiger V.K., Kashchayev E.A., Vliyaniye tekhnologiy vozdelyvaniya sel'skokhozyaystvennykh kul'tur na soderzhaniye produktivnoy vlagi i plotnost' pochvy v sevooborote (Influence of crop cultivation technologies on the content of productive moisture and soil density in crop rotation), Zemledeliye, 2015, No. 5, pp 16–18.

30. Plotnikova O.O., Rol' transportiruyushchey sposobnosti vodnykh potokov v izmenenii nekotorykh svoystv poverkhnostnykh gorizontov erodirovannykh chernozemov tipichnykh (na primere Kurskoy oblasti): Avtoref. dis. … kand. biol. nauk (The role of the transporting capacity of water flows in changing some properties of the surface horizons of typical eroded chernozems (on the example of the Kursk region), Extended abstract of cand. biol. sci. thesis), Moscow, 2021, 20 p.

31. Savin I.Yu., Stolbovoy V.S., Avetyan S.A., Shishkonakova E.A., Map of plowed soils of Russia, Dokuchaev Soil Bulletin, 2018, Vol. 94, pp. 38–56, DOI: 10.19047/0136-1694-2018-94-38-56.

32. Stolbovoy V.S., Grebennikov A.M., Soil quality indicators of arable lands in the Russian Federation, Dokuchaev Soil Bulletin, 2020, Vol. 104, pp. 31–67, DOI: 10.19047/0136-1694-2020-104-31-67.

33. Stolbovoy V.S., Shilov P.M., Petrosyan R.D., Reyestr osobo tsennykh produktivnykh sel'skokhozyaystvennykh ugodiy Rossiyskoy Federatsii (Register of especially valuable productive agricultural lands of the Russian Federation), Dostizheniya nauki i tekhniki, 2021, Vol. 35, No. 1, pp. 4–11.

34. Urbakh V.Yu., Biometricheskie metody (Biometric techniques), Moscow: Nauka, 1964, 415 p.

35. Khitrov N.B., Cheverdin Yu.I., Chizhikova N.P., Rogovneva L.V., Soils with vertic properties in Kamennaya Steppe, Dokuchaev Soil Bulletin, 2013, Vol. 72, pp. 3–25, DOI: 10.19047/0136-1694-2013-72-3-25.

36. Tselishcheva L.K., Dayneko E.K., Ocherk pochv Streletskogo uchastka Tsentral'no-Chernozemnogo zapovednika (Essay on the soils of the Streltsy area of the Central Chernozem Reserve), In: Trudy TSCHGZ im. V.V. Alekhina (Selected works of the Central Black Earth State Natural Biosphere Reserve named after Professor V.V. Alekhin), Iss. X, Mosow: Lesnaya promyshlennost, 1967, pp. 154–186.

37. Yudin S.A., Belobrov V.P., Drediger V.K., Grebenikov A.M., Aydiev A.J., Ilyin B.S., Ermolaev N.R., To the question of the methodology of conducting long-term experiments on the no-till technology influence on soil properties, Dokuchaev Soil Bulletin, 2019, Vol. 98, pp. 132–152, DOI: 10.19047/01361694-2019-98-132-152.

38. Gerasimova M.I., Khitrov N.B., Morphological soil description for classifying soils and interpteting their genesis, Dokuchaev Soil Bulletin, 2016, Vol. 86, pp. 8–16, DOI: 10.19047/0136-1694-2016-86-8-16.

39. Gerasimova M.I., Bronnikova M.A., Khitrov N.B., Shorkunov I.G., Hierarchical morphogenetic analysis of Kursk chernozem, Dokuchaev Soil Bulletin, 2016, Vol. 86, pp. 64–76, DOI: 10.19047/0136-1694-2016-86-6476.

40. IUSS Working Group WRB. World Reference Base for Soil Resources 2014, International soil classification system for naming soils and creating legends for soil maps. FAO, World Soil Resources Reports, 2014, No. 106, 203 р. 67, DOI: 10.19047/0136-1694-2020-104-31-67.