EFFICIENCY OF MINERAL FERTILIZERS ON SOFT SPRING WHEAT AT ZERO-TILLAGE

The results of studies on the effect of nitrogen fertilizers on the yield of spring soft wheat in the grain–steam crop rotation with traditional tillage technology obtained on southern carbonate chernozem in A. I. Barayev NPCKH LLP for 2018–2020 are presented. A comparative analysis of the meteorological conditions of the growing season of the studied years, which affect the moisture accumulation and the content of nutrients in the soil, is given. It is shown that over the years of observations, the maximum content of productive moisture before sowing wheat on the pair of the donnik layer was observed in 2018 – 142 mm, the minimum in 2020 – 118 mm. According to the pair of the granary formation, the largest amount of productive moisture was noted in 2020 – 124 mm, and the smallest in 2019 – 102 mm. The maximum average yield of spring wheat was obtained in the variant of applying ammophos at a dose of P40 for the donnik layer – 24.6 c/ha (profitability – 117 %), which is 3,3 c/ha significantly higher than the same variant for the granary layer. The additional application of nitrogen fertilizers, both for the donnik and for the granary, was not effective.

1. Krasnova Yu. S. Assessment of productivity indicators and ecological plasticity of spring soft wheat varieties of various ripeness groups in the southern forest-steppe of Western Siberia: dis. candidate of agricultural sciences: 06.01.05 / Krasnova Yulia Sergeevna – B., 2014 – 134 p.

2. V. F. Fedorenko, A. A. Zavalina, N. Z. Milashchenko. Scientific bases of production of high-quality wheat grain: scientific publication. - Moscow: FGBNU "Rosinformagrotech", 2018. – p. 5

3. Kosolapova A. I., Vozzhaev V. I., Leinikh P. A. Yield and quality of spring wheat grain depending on the use of mineral fertilizers // Perm Agrarian Bulletin– 2017. – № 3 (19). – Pp. 76–80

4. Grinets L. V. The effectiveness of the use of mineral fertilizers for grain crops on ordinary chernozems of Northern Kazakhstan, depending on their availability of phosphorus: dis. candidate of agricultural sciences: 06.01.04 / Grinets Larisa Vladimirovna. – Troitsk, – 2009. – 200 p.

5. Maltsev V. T. Weather conditions and the effectiveness of fertilizer application / V. T. Maltsev // Tr. international conferences–Crop rotations, resource-saving technologies and reproduction of soil fertility in adatipno–landscape agriculture of the Angara region. – Irkutsk, – 2005. – pp. 165–167.

6. Zhuravlev D. Yu., Klimova N. F., Yaroshenko T. M., Pronko V. V. Influence of mineral fertilizers on the grain quality of grain–pair crop rotation crops in the southern chernozems of the Volga region // Materials of the All-Russian coordination meeting of scientific institutions participating in the Geographical Network of experiments with fertilizers. – Moscow, – 2018. – pp. 86–91.

7. Agro-climatic resources of the North Kazakhstan region: scientific and applied reference / Edited by S. S. Baisholanov–Astana, – 2017. – 125 p.

8. Lazarev V. I., Lazareva R. I., Ilyin B. S., Minchenko Zh. N. The effectiveness of various methods of basic tillage and fertilizer systems for the cultivation of spring wheat in the conditions of chernozem soils of the Kursk region. – Moscow, – 2019, – №5 (371). – p. 12

9. Postnikov P. A. The role of vapors in stabilizing soil fertility and grain crop yield in crop rotations / Izvestiya Orenburg State University. - Orenburg, – 2013, – № 6 (44). – Pp. 41–43.

10. Maksyutov N. A., Skorokhodov V. Yu., Mitrofanov D. V., Kaftan Yu. V., Zenkova N. A. Efficiency of fertilizer application on southern chernozems of the Orenburg Urals / Izvestiya Orenburg State University. – Orenburg– 2020, – № 6 (86). – P. 21–25.

11. Lapshinov N. A., Pakul A. L., Bozhanova G. V., Pakul V. N. The content of nitrate nitrogen in the steam field under various tillage systems // International Scientific Research Journal. – Yekaterinburg, – 2015. – pp. 36–39.

12. Bakaev N. I., Vasko I. A. Methodology for determining soil moisture in agrotechnical experiments // Methodological guidelines and recommendations on agriculture. – Tselinograd, 1975. – pp. 57–80.

13. Sdobnikova O. V. Conditions of soil nutrition and the use of fertilizers in Northern Kazakhstan and Western Siberia: abstract of the dissertation of the Doctor of agricultural Sciences. – M., 1971 – 43 p.

14. GOST 26205–91 determination of mobile phosphorus and potassium compounds by the Machigin method in the TSINAO modification.

15. Dospekhov B. A. Methodology of field experience. – M.: Agropromizdat, 1985 – 351 p.

16. Divetter, K. The impact of nitrogen fertilizers on irrigated corn / K. Divetter, A.D. Schlegel // collection of articles on No–till. Agro–Soyuz Corporation, Mayskoye village. – 2013. – pp. 155–160