ПОВЫШЕНИЕ УРОЖАЙНОСТИ КУКУРУЗЫ ПОСРЕДСТВОМ НЕКОРНЕВОЙ ПОДКОРМКИ РАСТЕНИЙ

Abstract

The article analyzes the experimental data obtained in field experiments carried out at All-Russian Research Institute of Corn in 2018-2020 in the zone of sufficient moisture in Stavropol Territory. We studied the effect of mineral fertilizers N30, N30P30K30 applied for pre-sowing cultivation and their combination with leaf feeding of plants with the agrochemical product Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves, as well as sole feeding of plants with Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves. The object of the research was hybrids of different ripeness groups: Mashuk 185 MB, Mashuk 220 MB and Mashuk 355 MB. According to the research results, a positive effect of fertilizers and leaf feeding of plants with Vuksal Macromix agrochemical product at a dose of 2.5 l / ha at the phase of 7-8 leaves on vegetative growth, yield increase of green mass and corn grain was established. The increase of plant height according to the variants of the experiment: hybrid Mashuk 185 MV was 5-9 cm, Mashuk 220 MV - 8-14 cm, Mashuk 355 MV - 9-15 cm. The increase of green mass yield when N30 and N30P30K30 were applied for pre-sowing cultivation was 7.2-22.6% and 16.8-35.5%, N30 for pre-sowing cultivation + Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves - 9.5-27.2%, N30P30K30 for pre-sowing cultivation + Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves - 15.0-33.5%. The application of sole Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves for leaf fertilization increased the green mass yield by 13.3-22.8%. Increase of grain yield when applying N30 and N30P30K30 for pre-sowing cultivation amounted to 4.2-8.3% and 5.0-7.9%, N30 for pre-sowing cultivation + Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves - 4.2-7.5%, N30P30K30 for pre-sowing cultivation + Vuksal Macromix at a dose of 2.5 l / ha at the phase of 7-8 leaves - 3.0-12.1%. The application of Vuksal Macromix fertilizer for leaf fertilization at a dose of 2.5 l / ha at the phase of 7-8 leaves as an independent intake increased the grain yield by 8.0-11.5%.