The article gives the results of studies of the effect of seed sowing rates and doses of mineral fertilizers in zones of soil fertility of the field on spring wheat production in the conditions of Altai krai. The significance of the studied factors has been revealed. The influence of soil fertility on productivity and, ultimately, on the economic effect has been established. The high efficiency of the correct use of differentiated sowing and the application of mineral fertilizers has been proven. In 2022, the highest biological yield in the zone of high soil fertility reached 41.5 c/ha, in the zone of medium fertility – 37.2 c/ha, in the zone of low fertility – 37.8 c/ha. For 2023, the values of biological yield in these zones were 30.7; 34.4 and 25.8 c/ha, respectively. Fertility zones affected yields to a greater extent than changes in seed sowing rates and fertilizer doses within one zone. In 2022–2023 the differences in average biological yield between zones were 6–7 c/ha, which was 2.5–3 times more than with variations in seed sowing rates and fertilizer doses. The best option of precision farming within a field compared to traditional wheat cultivation has provided specific profit more by 5,700 and 4,438 rubles/ha in 2022 and 2023, respectively.

Belyaev Vladimir I., Sadov Viktor V., Smyshlyaev Andrey A., Kosheleva Evgeniya D.

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