Agriculture and forestry

Likar Yaroslav Oleksandrovych – Candidate of Agricultural Sciences, Associate Professor, National University of Life Resources and Environmental Management of Ukraine (03041, Kyiv, Heroiv Oborony St., 15. email: izz.biblio@ukr.net).

Hadzalo Yaroslav Mykhailovych – Doctor of Agricultural Sciences, Professor, Academician of the National Academy of Agrarian Sciences of Ukraine National Academy of Agrarian Sciences of Ukraine (01010, Kyiv, Mykhailo Omelyanovicha-Pavlenko St., 9. email: izz.biblio@ukr.net).

Vozhegova Raisa Anatoliivna – Doctor of Agricultural Sciences, Professor, Academician of the National Academy of Agrarian Sciences of Ukraine Institute of Climate-Oriented Agriculture of the National Academy of Agrarian Sciences of Ukraine (67667, Odesa region, Odessa district, 24 Mayatska doroga st., Khlibodarske village. email: izz.biblio@ukr.net).

The article presents the results of the energy analysis of the technology of growing sunflower using biological preparations. The research of the first experiment was conducted during 2017–2019 at the experimental field of the Institute of Irrigated Agriculture of the NAAS of Ukraine (now the Institute of Climate-Oriented Agriculture of the NAAS). The research was conducted in a two-factor experiment, which was laid out according to the following scheme: Factor A - hybrids: Yason (originator - V.Ya. Yuryev Institute of Plant Breeding of the NAAS of Ukraine, early ripening); hybrid Zlatson (originator - V.Ya. Yuryev Institute of Plant Breeding of the NAAS of Ukraine, medium-early); hybrid Charodiy (originators - V.Ya. Yuryev Institute of Plant Breeding of the NAAS, Selection and Genetics Institute, medium-early). Factor B - plant growth stimulants: STIMPO, Vympel. The second experiment was conducted during 2016–2018 at the experimental field of the Institute of Irrigated Agriculture of the NAAS of Ukraine (now the Institute of Climate-Oriented Agriculture of the NAAS). The two-factor experiment (factor A – hybrid, B – biological product) was set up using the randomized split block method. The replication was fourfold. Sunflower hybrid Yason (originator V.Ya. Yuryev Institute of Plant Breeding). Sunflower hybrid РR64E71 (originator – Pioneer (USA). Sunflower hybrid Rimi (originator – NS SEME - Institute of Agriculture, Novi Sad, Serbia). Biological products: Agat-25K, Gaupsin, Trichodermin. It was studied that the greatest impact on the yield of sunflower hybrid seeds was exerted by the biological product Agat-25K. In the variant with the Jason hybrid, the seed yield, on average, increased to 2.68 t/ha, which was 28.9% more than the control. When using the biological product Gaupsin, the seed yield increased to 2.39 t/ha, which was 15.3% more than the control. The minimal impact on the yield of Jason hybrid seeds was exerted by the biological product Trichodermin. In the hybrid РR64E71, when using the Agat-25K preparation, the yield increased by 33.4%, Gaupsin by 24.1% and Trichodermin by 21.7%. In the variant with the Rimi hybrid, the greatest efficiency was provided by the use of biological preparations Agat-25K and Trichodermin, with an excess of yield over the control by 23.7 and 16.4%, respectively. It was established that the use of biological preparations with growth-stimulating action Agat-25K, Gaupsin and Trichodermin provided a significant increase in the total energy intake with the harvest. The greatest total energy intake with the harvest was recorded in the variant with the Agat-25K preparation and the Rimi hybrid (71.8 GJ/ha). It was established that the highest energy efficiency coefficient (2.76) was established when treating crops with the plant growth stimulator "Vympel" on the Charodiy sunflower hybrid.

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