Productivity of the crop rotation link depending on the technology of development of fallow lands in the south of Central Siberia

Relevance. According to the conducted studies, it was found that the disadvantages of steppe nature management include water erosion, deflation and other adverse phenomena. Similar processes are taking place in Siberia. At present, the redevelopment of deposits is beginning and soil degradation is again manifested in the steppe regions of Khakassia. For the rational and efficient use of land resources, it is necessary to develop a technology for processing soil deposits in the arid steppe zone of the south of Central Siberia.
Methods. The study of the efficiency of soil cultivation technologies for the erosional agroecological group of fallow lands was carried out in the arid steppe agrolandscape region of the Republic of Khakassia, located in the south of Central Siberia. Research for four years was carried out in the link of fodder crop rotation: a long-term (20–25 years) cereal-forb fallow — oats (corn) for green mass by the method of B.A. Dospekhov. When performing the work, statistical and graphical methods were used.
Results. It is established that malicious perennial grasses and juvenile weeds grow on long-term fallow lands (20–25 years). High efficiency of complex application of herbicides of continuous action (Tornado 500, Octopus Extra) and intensive tillage was revealed. Tillage of a long-term deposit to a depth of 18–20 cm, disking, fine flatcutting treatment and spraying with herbicide reduces the number of perennial weeds by 2 times more compared to technologies, that include small treatments and herbicide application. In the arid steppe zone, the technology with tillage of a long-term deposit to a depth of 18–20 cm increases the productivity of the feed crop rotation link by an average of 25.3–33.7% compared to technological operations involving small-scale processing (12–14 cm and 14–16 cm).

1. Trofimov I. A., Trofimova L. S., Yakoleva E. P. Fertility and assessment of agricultural productivity. In the book. Problems and prospects of agriculture in Russia. Tyumen Publishing House. 2018. pp. 294-302. (In Russ.)

2. Chebochakov E. Ya. Improvement of soil-protective steppe agriculture in Khakassia. “Publishing and printing enterprise “Journalist”. 2019. 278 p. (In Russ.)

3. Chebochakov E. Ya., Edimeichev Yu. F., Shaposhnikov G. M., etc. Anti-erosion efficiency of methods of biologization of agriculture in the steppe and forest-steppe agro-landscape areas of Central Siberia. Feed production. 2019. No. 1. pp. 27-30. (In Russ.).

4. ОGeneral agriculture. In the book. Production management systems in agricultural organizations in Siberia. Publishing and printing company “Agros”. 2007. p. 114. (In Russ.)

5. Kashevarov N. I., Reznikov V. F. Problems of optimization of feed production in Siberia. Siberian Scientific Agricultural Library of the Russian Academy of Agricultural Sciences. 2015. 87 p. (In Russ.)

6. Edimeichev Yu. F., Romanov V. N. The potential of agriculture in Yenisei Siberia. Publishing Center of the Krasnoyarsk State Agrarian University. 2009. 131 p. (In Russ.)

7. In the book. Adaptive landscape systems of agriculture in the Novosibirsk region. Editorial and Printing Association Siberian Branch of the Russian Academy of Sciences. 2002. 388 p. (In Russ.).

8. Kiryushin V. I. Tasks of scientific and innovative support of agriculture in Russia. Agriculture. 2018. No. 3. pp. 3-9. (In Russ.)

9. Kholmov V. G. History of development and development of agriculture in Siberia. In the book. Agriculture on flat landscapes and agricultural technologies of cereals in Western Siberia (on the example of the Omsk region). «Revik-K». 2003. pp. 7-16. (In Russ.)

10. Dospekhov B. A. Methodology of field experience (with the basics of statistical processing of research results). Agropromizdat. 1985. 351 p. (In Russ.)