Agriculture and forestry

Palamarchuk Vitalii Dmytrovych – 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).

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

The article highlights the solution of important scientific issues - increasing the yield of sunflower hybrids by applying the optimal system of basic tillage in the context of global climate change. The research was carried out in 2021 in the experimental field of VNAU on the basis of NDG "Agronomichne", which is located in the village of Agronomichne, Vinnytsia region. We studied three methods of basic tillage for sunflower crops - plowing to a depth of 23-25 cm (control), mouldboardless loosening - deep cultivator to a depth of 14-16 cm and surface disk tillage to a depth of 10-12 cm in the cultivation of sunflower hybrids of different maturity groups SI Arco, Alcantara and NC Brio). The best conditions for growth and development of sunflower plants were created in the variant where the mouldboard tillage was carried out with a plow PLN-3-35 to a depth of 23-25 cm and the whole period the cultivated plants were without competition from weeds for life factors - SI Arko - 143 cm, Alcantara - 158 cm and NC Brio - 177 cm. It should also be noted the increase in the height of sunflower plants with the extension of the growing season. The height of plants in the early-ripening hybrid of sunflower SI Arco in 2021 ranged from 122-143 cm, middle-early Alcantara - 142-158 cm and medium-ripe NK Brio - 160-177 cm, i.e. was the highest. Shallow and surface tillage with disc implements increases vegetative weeds by 2.3 and 2.8 times, respectively. The implementation of protective mechanized measures for sunflower sowing against weeds has contributed to a significant reduction in their number. Thus, in the control variant with shelf plowing with PLN-3-35 plow to a depth of 23-25 cm in the flowering phase of the basket, it was in the hybrid of sunflower SI Arco - 28 pcs. / m2, Alcantara - 45 pcs. / m2 and NK Brio - 25 pcs. ./m2, on the version with shelf-free loosening with a deep ripper "Bravo Till" to a depth of 14-16 cm - 75 pcs./ m2, 83 and 78 pcs./ m2, and with surface disk tillage harrow BDT-7 to a depth of 10-12 cm were the highest - 127 units / m2, 134 and 119 units / m2. Against the background of plowing, their number decreased by 31.2-42.8%. Carrying out mechanical measures (one before ladder and one after ladder harrowing, as well as inter-row loosening in the phase of 5-6 leaves of sunflower) protection of sunflower against the background of plowing helped to reduce weeds by 21.0-33.6%. At the end, plowing yield of sunflower seeds was higher (by 0.21-0.74 t / ha). The value of oil content when using mouldboard plowing was the highest and was in SI Arco - 46.4%, Alcantara - 47.2% and NC Brio - 47.4%.

1.Maliarchuk V., Sydorenko V. (2018) Vrozhainist hibrydiv soniashnyka za riznoho osnovnoho obrobitku gruntu v umovakh Pivdennoho Stepu Ukrainy [Yield of sunflower hybrids under different main tillage conditions in the Southern Steppe of Ukraine]. Tekhniko-tekhnolohichni aspekty rozvytku ta vyprobuvannia novoi tekhniky i tekhnolohii dlia silskoho hospodarstva Ukrainy – Technical and technological aspects of development and testing of new equipment and technologies for agriculture of Ukraine. Issue. 23(37), 193-200 [in Ukrainian].

2.Orlov O. (2020). Top chynnykiv, yaki limituiut vrozhainist soniashnyku [Top factors that limit the yield of sunflower]. Ahronom – Agronomist. 2 (68). 112-116 [in Ukrainian].

3.Palamarchuk V.D. (2020). Pozakorenevi pidzhyvlennia u suchasnykh tekhnolohiiakh vyroshchuvannia hibrydiv soniashnyku [Foliar feeding in modern technologies for growing sunflower hybrids]. Ahrobiolohiia – Agrobiology. Issue.1 (157). 137-144. [in Ukrainian].

4.Vozhehova R.A., Maliarchuk V.M. (2012). Efektyvnist suchasnykh tekhnolohii vyroshchuvannia soniashnyku za riznykh umov zvolozhennia ta sposobiv i hlybyny osnovnoho obrobitku gruntu na pivdni Ukrainy [Efficiency of modern technologies of sunflower cultivation under different conditions of moistening and methods and depth of the main tillage in the south of Ukraine]. Zroshuvane zemlerobstvo – Irrigated agriculture. Issue. 58. 40-41. [in Ukrainian].

5.Maliarchuk V.M. (2014). Vplyv tekhnolohichnykh protsesiv osnovnoho obrobitku gruntu na yoho vodnyi rezhym i produktyvnist soniashnyku [Influence of technological processes of the main tillage on its water regime and productivity of sunflower]. Tekhniko-tekhnolohichni aspekty rozvytku ta vyprobuvannia novoi tekhniky i tekhnolohii dlia silskoho hospodarstva Ukrainy – Technical and technological aspects of development and testing of new equipment and technologies for agriculture of Ukraine. Issue. 18(2), 88-94. [in Ukrainian].

6.Hanhur V.V., Sokyrko P.H., Totskyi V.M. (2011). Urozhainist ta ekonomichna efektyvnist vyroshchuvannia soniashnyku za riznykh sposobiv obrobitku gruntu [Yield and economic efficiency of sunflower cultivation with different methods of tillage]. Visnyk Poltavskoi derzhavnoi ahrarnoi akademii – Bulletin of the Poltava State Agrarian Academy, 1. 46-48. [in Ukrainian].

7.Hubenko L.V., Zadubynna Ye.V., Tarasenko T.V. (2018). Formuvannia produktyvnosti soniashnyku zalezhno vid system osnovnoho obrobitku gruntu i udobrennia [Formation of sunflower productivity depending on the systems of basic tillage and fertilizer]. Zemlerobstvo – Agriculture. Issue. 1 (94), 28-31. [in Ukrainian].

8.Palamarchuk V.D., Klymchuk O.V., Polishchuk I.S., Kolisnyk O.M., Borivskyi A.F. (2010). Ekoloho-biolohichni ta tekhnolohichni pryntsypy vyroshchuvannia polovykh kultur: Navchalnyi posibnyk [Ecological, biological and technological principles of growing field crops: Textbook]. Vinnytsia. [in Ukrainian].

9.Palamarchuk V.D., Polishchuk I.S., Kalenska S.M., Yermakova L.M. (2013). Biolohiia ta ekolohiia silskohospodarskykh roslyn: Pidruchnyk. [Biology and ecology of agricultural plants: Textbook]. Vinnytsia [in Ukrainian].

10.Pysarenko P.V., Maliarchuk A.S., Myshukova L.S., Maliarchuk V.M. (2020). Produktyvnist soniashnyku za riznykh sposobiv i hlybyny osnovnoho obrobitku gruntu v sivozminakh na zroshenni [Productivity of sunflower in different ways and depth of the main tillage in crop rotations under irrigation]. Zroshuvane zemlerobstvo – Irrigated agriculture. Issue. 74, 143-148. [in Ukrainian]

11.Mazur V.A., Palamarchuk V.D., Polishchuk I.S., Palamarchuk O.D. (2017). Novitni ahrotekhnolohii u roslynnytstvi: Pidruchnyk [The latest agricultural technologies in crop production: Textbook]. Vinnytsia. [in Ukrainian].

12.Honcharov O. (2016). Naichastishe – hirshe? Soniashnyk i rodiuchist hruntu [Most often - worse? Sunflower and soil fertility]. URL: https://agro.dn. gov.ua/najchastishe- girshe-sonyashnik-i-rodyuchist-gruntu/. [in Ukrainian].

13.Mazur V.A., Didur I.M., Tsyhanskyi V.I., Malamura S.V. (2020). Formuvannia produktyvnosti hibrydiv soniashnyka zalezhno vid rivnia udobrennia ta umov zvolozhennia [Formation of productivity of sunflower hybrids depending on the level of fertilizer and moisture conditions]. Silske hospodarstvo ta lisivnytstvo – Agriculture and forestry. Issue. 4(19), 208-220. [in Ukrainian].

14.Palamarchuk V.D., Polishchuk I.S., Yermakova L.M., Kalenska S.M. (2012). Systemy suchasnykh intensyvnykh tekhnolohii (2-he vydannia vyprav. ta dopov.) [Systems of modern intensive technologies (2nd edition corrected and supplemented)]. Vinnytsia: FOP Rohalska I.O. [in Ukrainian].

15. Vozhehova R.A., Lavrynenko Yu.O., Maliarchuk M.P. ta in. (2014). Metodyka polovykh i laboratornykh doslidzhen na zroshuvanykh zemliakh [Methods of field and laboratory research on irrigated lands]. Kherson: Hrin D.S. [in Ukrainian].