Productivity of corn hybrids, economic and energy efficiency of their cultivation in the Krasnodar Territory

Introduction. The development of modern technologies for growing corn grain is a complex task that requires the use of adaptive approaches and highly productive, stress-resistant hybrids with individually selected sets of agrotechnical techniques. The goal of the research is to study the influence of hybrid composition, chemical plant protection products against weeds, sowing dates and the number of inter-row cultivations on plant height, leaf surface area, grain yield, economic and energy efficiency when growing crops in the Krasnodar Territory. The Methods. The bookmark, mathematical processing of experimental data, economic and energy analysis were carried out according to the methodology of experimental work in agronomy. The Results. The DKC 4590 corn hybrid has shown the best results in the studied productivity parameters - plant height, leaf area, yield. Thus, the maximum grain productivity at the level of 77.2 c/ha has been obtained when growing this hybrid with an early sowing date, using the Titus Plus herbicide and carrying out two cultivations. On average, early sowing dates and inter-row cultivations significantly have increased the yield and plant height. The Titus Plus herbicide also has shown a positive effect on the productivity indicators of corn. Economic analysis has established that the highest net income (38.8-45.3 thousand rubles/ha) is provided by the DKC 4590 hybrid with its weed protection by the Titus Plus herbicide, early sowing date and two inter-row cultivations. Energy assessment has proven the advantage of growing Ladozhskiy 291 and DKC 4590 hybrids; their energy efficiency coefficient has increased up to 1.58-1.63. Conclusion. Thus, it has been established that when growing corn for grain in the Krasnodar Territory, the best results with a yield of more than 77 c/ha and a net income of more than 45 thousand rubles/ha are provided by the DKC 4590 hybrid with an early sowing date, the use of the Titus Plus herbicide and two inter-row cultivations.