Purpose. Determination of optimum dozes of foliar fee­ding for each cultivar that will provide the highest output of standard rootstocks. Methods. Field, analytical and statistical ones. Results. The author presents the results of study of the hazelnut plant foliar feeding in the mother plantation for vegetative propagation with applying different carba­mide concentration combined with 0.1% potassium sulfate (1.50.4 m) in case of horizontal method of growing. Biometric indices of hazelnut layers were analyzed; the influence of each factor on their height and diameter was determined. The rootstocks output per 1 linear meter for each cultivar as well as optimum foliar feeding doze was defined (0.5% carbamide with 0.1% potassium sulfate). Conclusions. The highest output of standard rootstocks in the mother plantation for horizontal vegetative propagation was achieved when applying the foliar feeding with 0.5% carbamide combined with 0.1% potassium sulfate, particularly (thousand rootstocks per 1 ha) for the cultivars: ‘Sviatkovyi’ – 66.7, ‘Dolynskyi’ – 62.1 and ‘Darunok Yunnatam’ – 50.7. For ‘Koronchatyi’ cultivar, the use of 3% carbamide was the most efficient.

Purpose. To study the effect of growth regulators EpinTM and Emistym C on yield and quality of strawberry berries of five varieties (Fragaria ananassa (Weston) Duсhesne ex Rozier) with various ripening time. Methods. Field, laboratory, analytical and statistical ones. Results. It was found that there were no impact of growth regulators EpinTM and Emistym C on the speed of phenological phases of strawberry plants development. It was experimentally determined the impact of mentioned substances on the yield of most studied varieties. Laboratory analysis has confirmed the changes in biochemical composition of strawberries. Conclusions. The use of growth regulators EpinTM end Emistym C had a positive effect on fruit yield and quality of studied strawberry varieties. Spraying with these substances increased yields by 14–51% as compared with the control. Content of sugars, dry matter and vitamin C in berries of most of varieties was increasing. At the same time the level of acidity in case of spraying with growth regulators was significantly reducing.

Мета. Дослідити особливості водоспоживання сортів вівса за різних строків сівби в умовах недостатнього та нестабільного режиму зволоження в північній частині Степу України. Методи. Польовий, метод синтезу, статистичний. Результати. Встановлено, що максимальну кількість вологи споживав сорт Скакун за сівби в оптимальні строки та в разі їх зміщення, що зумовлено його тривалішим вегетаційним періодом. Сумарне водоспоживання за вегетаційний період у нього становило 3189–2826 м3/га. Найменшу кількість вологи споживав сорт Кубанський – 2976 м3/га за оптимальних строків сівби та 2632 м3/га – за сівби зі зміщенням на 15 діб. Сорт Синельниківський 1321 за рівнем сумарного водоспоживання займав проміжне положення між оцінюваними сортами – він споживав 3069 м3/га вологи за сівби в оптимальні строки та 2732 м3/га – у разі її зміщення на 15 діб. Висновки. В умовах північної частини Степу України ефективне використання наявної вологи визначається здатністю деяких сортів краще адаптуватися до несприятливих за водним режимом умов вирощування. Сорт Синельниківський 1321 є найбільш посухостійким серед оцінених сортів. Середньопосухостійким виявився сорт Скакун. Оптимальні строки сівби є найпридатнішими для цієї зони. Сівба вівса в пізніші строки призводить до зменшення сумарного водоспоживання та підвищення коефіцієнтів водоспоживання. Найраціональніше волога використовується в разі сівби вівса в оптимальні строки та в умовах вищого природного вологозабезпечення.

Purpose. Study of winter wheat varieties that were bred at the Institute of Irrigated Farming NAAS through ecological testing in Turkey. Test procedures both in Ukraine and Turkey meet the requirements of the International Union for the Protection of New Varieties of Plants (UPOV). Methods. Field, laboratory ones: structural analysis, quality analysis, statistical analysis. Results. The Exporter Unions Seed and Research Company (ITAS) during 2011–2013 tested winter wheat varie­ties bred at the Institute of Irrigates Farming (IIF) NAAS at four areas of the Central Plateau of Turkey comparing them with local varieties registered in this country. According to the results of these tests the Exporter Unions Seed and Research Company identified Kohana variety as candidate for the state registration in Turkey. Conclusions. The realisation of the innovative product in Ukraine and entitlement to use intellectual property due to licensing agreements is expected. The Institute of Irrigated Farming NAAS continues to create new varieties of winter wheat which can be transferred to other countries for testing for the purpose of introduction and further expansion.

Мета. З’ясувати особливості формування адитивних біоценотичних зв’язків у фітоценозах тритикале озимого в умовах лісостепового та полісько-лісостепового екотопів. Методи. Польові, лабораторні дослідження та математично-статистичний аналіз. Результати. Досліджено чутливість генотипів тритикале озимого, зокрема АД 256, Славетне, Славетне поліпшене, Пшеничне, Чаян, Ягуар, Августо, ДАУ 5 і Вівате Носівське, на дію мікробних препаратів альбобактерину та діазобактерину в умовах лісостепового та полісько-лісостепового екотопів. Встановлено, що інтродукція агрономічно корисної мікробіоти в фітоценози тритикале озимого забезпечує формування адитивних біоценотичних зв’язків, ефективність яких визначає рівень продуктивності зернової культури. Висновки. Для забезпечення оптимальних цільових параметрів урожаю зерна в умовах лісостепового та полісько-лісостепового екотопів доцільно проводити передпосівну інокуляцію насіння тритикале озимого ефективними штамами мікробних препаратів – Azospіrіllum brasilense діазобактерину та Achromobacter album 1122 альбобактерину.

Purpose. To study the influence of agriecological conditions of edaphic-climatic macro- and microzones on adap­tability and productivity of new soft winter wheat, identification and selection of complementary varieties for appropriate conditions. Methods. Field, laboratory, analytical and statistical ones. Results. Peculiarities of the formation of productivity of varieties and its stability cultivation on the condions of cultivation in edaphic-climatic zones, subzones and microzones, including favourable and unfavou­rable years were studied. For realizing the potential of their productivity, it is advisable to introduce a differentiated approach to their cultivation in agri-climatic zones, subzones, microzones according to the requirements of biological characteristics of varieties, their natural adaptive capacity, natural and ecological environment of these zones. Complementary varieties were identified and recommended for use in edaphic-climatic zones, subzones and microzones that demonstrated high plasticity, better adaptability to favourable agri-ecological factors and were more tolerant and resistant to adverse ones. Conclusions. According to the set of productivity and ecological plasticity indices, it is desirable to cultivate varieties Sotnytsya, Kalancha, Hurt, Tonatsiya, Dobrochyn, Gubernator Donu in the Steppe zone; Sotnytsya, Oriyka, Lira Odeska, Tatsitus and Fidelius – in the Forest-Steppe; Tatsitus, Fidelius, Sailor, Etela – in the Polissia.

Purpose. Revealing of adaptive properties of plant varieties of red beet Bordeaux Kharkivskyi and Aktion based on the study of plant growth regulators for marketable production in the Steppe zone of Ukraine. Methods. Field, laboratory ones, variance analysis. Results. The influence of plant growth regulators (Lignogumat, Betastimulin) on earliness and productivity of such red beet varieties as Bordeaux Kharkivskyi and Aktion was established. Conclusions. Plant growth regulators (Betastimulin, Lignogumat) stimulated seed sprouting of red beet Bordeaux Kharkivskyi and Aktion varieties, activated vegetative plant growth increa­sing marketable yield. Application of Betastimulin (0.2%) for red beet Kharkivskyi Bordeaux and Aktion varieties provides the highest number of marketable beetroots, thus forming marketable yield of 44.7 and 54.9 t/ha respectively with the average beetroot weight of 328–519 g.

Purpose. Substantiating the selection of potato varieties for their ecological plasticity and stability to grow in Polissia. Methods. Field, laboratory, analitycal and statystical ones. Results. Impact of weather conditions during the growing season on the stability of potato varieties was estimated by indicators of yield, starch content and collection over the years by determining the average, standard deviation, minimum, maximum values and range of variation. ‘Memphis’, ‘Faluka’, ‘Arsenal’ and ‘Evolution’ were distinguished from the studied potato varieties by high genetic stability – their deviation from the average variance marked «minus» had values that were significantly less than zero. ‘Faktor’, ‘Flamenko’ and ‘Evora’ varieties are plastic (deviation is close to ±0), ‘Kolomba’, ‘Arizona’ and ‘Voliumiia’ ones – very plastic (deviation is most distant from zero). The studied varieties were distributed by homeostasis as follows: ‘Arizona’, ‘Colombo’, ‘Factor’ and ‘Memphis’ are the most valuable. Conclusions. ‘Evora’ potato variety can be considered intensive in terms of yield. ‘Evolution’ and ‘Flamenco’ varieties formed stable yields, during the years of study the difference between their maximum and minimum yields was the least – 8.2 and 9.3 tons per ha, respectively. Environmental assessment according to Eberhart and Russell indicates a high genetic stability of such potato varieties as ‘Arizona’, ‘Volyumiia’, ‘Kolombo’, ‘Evora’ and ‘Flamenko’. Conditions of Zhytomyr Oblast Plant Varieties Studying Centre are the most favorable among the studied regions to cultivate potato varieties.

Nomenclature of genus Vaccinium considered, as well as the application of names for indigenous and introduced species and denomination of fruit crops as derived from those species. System of binary species names for Vaccinium s.l. has been proposed as based on the Ukrainian generic name ‘lokhina’ that best complies with the principles for establishing generic names.

Purpose. Comparative evaluation of varieties of tomato bred by Kyiv experimental station of the Institute of vege­tables and melons (IVM) NAAS of Ukraine with allowance for different fruit shapes. Methods. Field, laboratory, statistical ones. Results. Since varietal characteristics can greatly influence the course of the growth process, the experiment included phenological observations of plants growth and development, biometric measurements of plants and fruits, productivity records, besides, biochemical values of fruits with various shape were defined (flat-round and plum-shaped fruits). Varieties with the highest yield, best biochemical values and earlier fruit ripening were identified. Conclusions. Among the samples of tomato with flat-round fruits, Zoren variety had the shortest time interval from mass germination up to early ripening of fruits, Myroliubivskyi variety – in the group of plum-shaped fruits. In the first group Atlasnyi variety had the highest yield, in the se­cond – Khoriv variety. Atlasnyi (flat-round fruits) and Oberig (plum-shaped fruits) varieties had the best biochemical values. Varieties with plum-shaped fruits excelled samples with flat-round fruits at biochemical composition.