Bioenergetic assessment of the use of fertilizers for potatoes in the northern region of Kazakhstan

In field experiments, the high energy efficiency of the use of mineral fertilizers for potatoes on chestnut soils of northern Kazakhstan was revealed. The energy efficiency of the use of nitrogen, phosphorus and potash fertilizers has been established. The energy consumption of nitrogen fertilizers per 1 kg of increase in the yield of the main product, depending on the doses of fertilizers, ranged from 6223,3 MJ (efficiency = 2,2 units) to 15129,6 MJ (efficiency = 1,0 units). The energy content of 1 kg of phosphorous fertilizers used by increasing the yield of potato tubers (c) was estimated from 11712 MJ (efficiency = 1,9 units) to 18300 MJ (efficiency = 2,5 units), which indicates high energy efficiency. Energy costs varied in the range of 5130,5 MJ against the background of N₄₅K₄₅ and 7208,3 MJ against the best variant of N₄₅P₉₀K₄₅. The energy efficiency from the use of potash fertilizers is estimated at 2,2 units for variants K₄₅ and K₉₀ against the background of N₄₅P₄₅. Energy costs are reduced by obtaining 1 c of potato tubers in more efficient variants in terms of the energy efficiency of the fertilizers used. Knowing the energy costs (Ao, MJ) for growing crops and the energy content (Vf₀, MJ/ha) in the yield of products, it is possible to conduct a bioenergetic assessment of the effectiveness of crop cultivation in the practice of applying fertilizers. The purpose of the research is to identify the bioenergetic efficiency of the use of mineral fertilizers for potatoes on chestnut soil in the conditions of the Northern region of Kazakhstan. 

1. Abramov N.V., Selyukova G.P. Optimization of the structure of acreage on a bioenergetic basis// Yekaterinburg: UrGSHA. – 2001 – Р. 55-75.

2. Ermokhin Yu, I., Krasnitsky V.M. Economic and bioenergetic assessment of fertilizer application// Omsk: KAN. – 2021. – P. 122-136.

3. Bobrenko I.A., Matveychik O.A. and Kormin V.P. Bioenergetic efficiency of application of fertilizers for potatoes// Bulletin of Omsk State Agrarian University 2021. – T. 2 (42) – Р.27-33.

4. Velikanova L.O., Siso A.V. Bioenergetic assessment of alternative technologies for the cultivation of corn for grain and winter wheat in lowland-western agricultural landscapes of the central zone of the Krasnodar Territory// Polythematic online electronic scientific journal of the Kuban State Agrarian University. – 2013. – № 87. – Р. 528-536.

5. Dmitriev N.N. Bioenergetic efficiency of crop rotations, fertilizers and liming in the conditions of the Pre-Baikal region// Bulletin of the IrGSHA. – 2016. – № 77. – Р. 26-34.

6. Obraztsov V.N., Shchedrina D.I. and Kondratov V.V. Economic efficiency and bio-energetic assessment of the use of mineral nitrogen fertilizers on seed crops of festulolium// Bulletin of the Voronezh State Agrarian University. – 2016. – №4 (51). – P. 14-20.

7. Abeuov S.K., Shoikin O.D., Kamkin V.A. Mathematical models for predicting the nutritional value of potatoes by soil chemical composition in the conditions of Northern Kazakhstan// International Scientific and Practical Conference. Series: Earth and Environmental Science. – 2022. - Vol. 954 – Р. 012003.

8. Temereva I.V., Smirnova T.B., Chemisenko O.V. Agrochemical assessment of the effectiveness of cultivation of various potato varieties on meadow-chernozem soils of the Irtysh river basin in Western Siberia// International Scientific and Practical Conference. Series: Earth and Environmental Science. – 2021. - Vol. 624. – P. 012098.

9. Bobrenko I.A., Popova V.I. and Homan N.V. Bioenergetic efficiency of fertilizers for winter wheat in Western Siberia// Bulletin of Omsk State Agrarian University. – 2014. – №1 (13). – P. 3-9.

10. Sozinov A.A., Novikov Yu.F. The energy price of industrialization of the agricul-tural sphere// Nature. – 1985. – №5. – Р.11-19.

11. Abeuov S., Shoikin O., Kamkin V. and Ermokhin Yu. Indicators of the relationship between chemical composition and potato yield// International Scientific conference dedicated to problems and achievements in the field of agriculture, food production, agricultural research and education (KnE Life Sciences). – 2021. – №6 (3). – P. 7-14.