https://repository.utm.md/handle/5014/8303 2026-05-09T08:20:46Z https://repository.utm.md/handle/5014/36102 Productivity of Strawberry Depending on Planting Time and Varieties in the Conditions of the Republic of Moldova MANZIUC, Valerii; BARANIUC, Vladislav The purpose of this study was to establish the optimal timing of planting strawberries using “frigo” seedlings, as well as to assess the productivity of CIV Italy varieties under the conditions of the Republic of Moldova. The strawberry varieties Marmolada, Aprica, Sibilla, Arosa, and Laetitia and three planting dates were taken as the object of research - mid-June, mid-July, and mid-August. The plantation was established in the summer of 2021, research was carried out during 2022-2023. Research has shown that early planting periods contributed to good tillering and the formation of 3.5 to 4.4 fruiting shoots per bush, as well as a well-developed leaf surface, not significantly different from the second year of the growing season while planting in mid-August led to a reduction in the number of leaves by 2.3 – 2.9 times. The most productive among the studied varieties was the Laetitia variety, which in total for 2 years of fruiting amounted to 55.69 t/ha. The varieties Aprica and Sibilla have the fastest ripening of berries. The most optimal time for planting “frigo” seedlings for the conditions of Moldova is the first ten days of July, which contributes to obtaining the first harvest more than 2 times higher compared to the recommended planting in mid-August. 2023-01-01T00:00:00Z https://repository.utm.md/handle/5014/36101 Evaluation of the growth and productivity of new strawberry varieties in open field MANZIUC, Valerii The aim of this study was to examine the agrobiological indicators of growth and fruiting of new Italian strawberry varieties, which are actively imported due to the limited availability of domestic cultivars. The goal was to identify the most productive, visually appealing, and resilient varieties suitable for commercial use. 2025-01-01T00:00:00Z https://repository.utm.md/handle/5014/36100 Изменение биосинтетической активности стрептомицетов почв Mолдовы, выращенных на средах разного состава БЕРЕЗЮК, Юлия; БУРЦЕВА, Светлана; БЫРСА, М.; ВАСИЛЬЧУК, Анастасия; ШЕПТИЦКИЙ, Владимир Изучена способность штаммов стрептомицетов, выделенных из почв Молдовы, к накоплению в биомассе липидов и аминокислот в зависимости от состава питательной среды. Установлено, что изучаемые штаммы лучше растут на комплексных средах, из проверенных штаммов больше всего биомассы (≈20 г) образует штамм Streptomyces gougerotii CNMN-Ac-14 (66) на среде М-1, максимальное количество липидов (≈13,5%) было обнаружено у штамма Streptomyces sp. 49 при росте на среде М-1, фосфолипидная фракция (≈17.2%) в максимальном количестве содержалась в биомассе штамма Streptomyces sp. 49 при росте на среде R, стериновая фракция (≈15%) – у штамма Streptomyces gougerotii CNMN-Ac-14 (66) при росте на среде М-1. Изучение аминокислотного состава показало, что исследуемые штаммы синтезируют 19 аминокислот, суммарное количество незаменимых аминокислот составляет 35-40%.; The ability of streptomycete strains isolated from the soils of Moldova to accumulate lipids and amino acids in biomass, depending on the composition of the nutrient medium, was studied. It was found that the studied strains grow better on complex media; of the tested strains, the most biomass (≈20 g) is formed by the Streptomyces gougerotii CNMN-Ac-14 (66) strain on M-1 medium; the maximum amount of lipids (≈13.5%) was found in the strain Streptomyces sp. 49 during growth on M-1 medium, the phospholipid fraction (≈17.2%) was contained in the maximum quantity in the biomass of the strain Streptomyces sp. 49 when growing on R medium, the sterol fraction (≈15%) – in the Streptomyces gougerotii CNMN-Ac-14 (66) strain when growing on M-1 medium. The study of amino acid composition showed that the studied strains synthesize 18-19 amino acids, the total amount of essential amino acids is 35-40%. 2025-01-01T00:00:00Z https://repository.utm.md/handle/5014/36099 Evaluarea intensității de zbor ale albinelor la culesul melifere de la levențică PETCU, Iana Cercetările au avut ca scop evaluarea intensității de zbor ale albinelor la culesul melifer de levențică. S-a evaluat că în prima perioadă de înflorire a levențicăi s-a înregistrat o creștere a colectării nectarului de la 76,0 buc. la ora 1000, până la 121,0 albine/5 minute la ora 1500. Colectarea polenului a fost redusă, cu valori medii între 1,0 și 4,0 albine/5 minute. S-a relevat că la mijlocul perioadei de înflorire activitatea de cules a crescut semnificativ, numărul mediu de albine întoarse din cîmp cu nectar a constituit 254-272 albine/5 minute și cu ghemotoace de polen – 9-19 buc. O frecventare mai intensă a florilor s-a înregistrat la 100 m față de stupină comparativ cu 700 m, diferență accentuată în condiții de vânt. S-a determinat că la finele perioadei de înflorire, în pofida vântului persistent, colectarea nectarului a rămas intensă, cu medii între 281 și 361 albine/5 minute și cu gemotoace de polen – 12-17 buc. Levențica constituie o sursă importantă de nectar, iar eficiența exploatării acesteia depinde de puterea familiilor, distanța față de cultură și condițiile meteorologice.; The research aimed to evaluate the flight activity of honey bees during nectar foraging on lavender. It was determined that during the first flowering period of lavender, nectar collection increased from 76.0 individuals at 10:00 a.m. to 121.0 bees per 5 minutes at 3:00 p.m. Pollen collection was low, with mean values ranging between 1.0 and 4.0 bees per 5 minutes. It was revealed that in the middle of the flowering period, foraging activity increased significantly, with the average number of bees returning from the field with nectar reaching 254–272 bees per 5 minutes, and those carrying pollen pellets numbering 9–19 individuals. A more intensive visitation of flowers was recorded at a distance of 100 m from the apiary compared to 700 m, a difference that became more pronounced under windy conditions. It was determined that at the end of the flowering period, despite persistent wind, nectar collection remained intensive, with average values between 281 and 361 bees per 5 minutes, while pollen foraging accounted for 12–17 individuals. Lavender represents an important nectar source, and the efficiency of its exploitation depends on colony strength, distance from the crop, and meteorological conditions. 2026-01-01T00:00:00Z