Krasnodarskiy 291 AMR and Krasnodarskiy 385 MR corn hybrids response to fertilizer application

Introduction. The scope of application of corn grain is very wide. However, the most important area of its application is the use as a forage crop in all branches of animal husbandry, including poultry farming. The primary task in growing corn is to realize the yield potential by optimizing nutrition and protecting plants from adverse weather conditions. To do this, it is necessary to know the principles of the correct site selection and develop a rational strategy for applying mineral fertilizers.
The goal of the research. In 2023-2024s studies were conducted on leached chernozems of JSC Rassvet, the Ust- Labinsk district, the Krasnodar Territory, to establish the optimal dose of mineral nutrition in the cultivation of corn - mid-early hybrid Krasnodarskiy 291 AMR and mid-season hybrid Krasnodarskiy 385 MR.
The methods. Field experiments were laid out according to the Methodology of field experiment according to B.A. Dospekhov [3, pp. 230-245].
The results. The studies have established that under the conditions of 2023, the studied plants realized their productive potential, achieving a yield of 5.11 t / ha for the Krasnodarskiy 291 AMR hybrid, and 7.32 t / ha for the Krasnodarskiy 385 MR hybrid. Analyzing the climatic conditions of 2024, it should be noted that the abnormal temperature conditions of up to 41-43 ° C in the complete absence of precipitation in July-August greatly affected the yield of corn hybrids. Thus, for the mid-early hybrid Krasnodarskiy 291 AMR, 2.67-3.03 t / ha were formed (with 2.39 t / ha in the control variant), and for the mid-season hybrid Krasnodarskiy 385 MR, the yield reached 4.33-5.26 t / ha (with 3.40 t / ha in the control variant).
The conclusion. The analysis of the efficiency of corn grain production has shown that, on average, for 2023-2024, the mid-season hybrid Krasnodarskiy 385 MR is responsive to fertilizers and provides the highest profitability of production - 53.9-65.2%. For the mid-early hybrid Krasnodarskiy 291 AMR, it is extremely low - 0.6-9.6%, due to negative profitability in 2024.

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