Agriculture and forestry

Palamarchuk Vitaliy Dmitrovich – Doctor of Agricultural Sciences, Associate Professor of the department of plant production, selection and bioenergetic cultures Vinnytsia National Agrarian University (21008, Vinnytsia, Sonyachna st., 3 email: vd-palamarchuk@ukr.net).

Pidlubny Vladislav Fyodorovych – Assistant of the Department of Computer Science and Economic Cybernetics, Vinnytsia National Agrarian University (21008, Vinnytsia, 3 Sonyachna Street, email: vladpodlubny@gmail.com). 

Krychkovskyi Vadym – postgraduate student of Vinnytsia National Agrarian University (21008, Vinnytsia, Soniachna Str. 3, email: 2112kv@gmail.com).

Kovalenko Oleg Anatolyevich – Candidate of Agricultural Sciences, Associate Professor of the department of plant growing and landscape gardening in Nikolaev National Agrarian University (54020, Nikolaev, st. Georgi Gongadze, 9). 

The article presents the results of researching the impact of foliar fertilization with microfertilizers Ecolist Mono Zinc and Rostok Corn, plant growth regulator Vimpel and bacterial preparation Biomag on the complex of economically valuable traits and productivity of maize hybrids of different maturity groups (early ripening group: Kharkiv 195 MV, (FAO 190), DKS 2960 (FAO 250), DKS 2949 (FAO 190), DKS 2971 (FAO 200), middle-early: DKS 3472 (FAO 270), DKS 3420 (FAO 280), Pereyaslavsky 230 SV (FAO 230), DKS 3871 (FAO 280) and medium-ripe: DK 391 (FAO 320), DK 440 (FAO 350), DKS 4964 (FAO 390), DK 315 (FAO 310)). The dependence of foliar fertilization usage and the starch content in corn grain is generalized. One-time foliar feeding provided a starch content increase by 0.1-0.5%, double feeding - by 0.85-1.30%. The yield of starch was in hybrids DK 391 - 8,748 t / ha, DK 440 - 8,821 t / ha, DKS 4964 - 9,559 t / ha, DK 315 - 9,314 t / ha with a single feeding  and with a double feeding it was significantly higher  - 9,220 t / ha, - 9,384 t / ha, 10,142 t / ha, 9,993 t / ha, accordingly. The highest yield of starch in all hybrids was provided by double application of microfertilizer Ecolist Mono Zinc (8,983-10,595 t / ha) and Rostok corn (8,721-10,597 t / ha), the increase in starch yield with the use of these fertilizers was 0.5-1.8 t / ha, relative to control (water supply). It is established that in dry years with high temperatures (2012) there is a decrease in starch content, regardless of the studied vegetation factors and cultivation technology. Foliar fertilization contributed to an increase in the starch content of the grain (by 0.1-0.46% in 2011-2013) compared to the control (without foliar fertilization). The highest starch content in the grain of the studied maize hybrids (70.92-76.72% and 71.45-76.72%) was provided by foliar fertilization with microfertilizers Ecolist Mono Zinc and Rostock corn. A decrease in the starch content was observed during crop treatment with the plant growth regulator Vimpel in the phase of 5-7 corn leaves on hybrids DKS 3420 by 0.36%, Pereyaslavsky 230SV by 0.11% and DKS 3871 by 0.5%, respectively.

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