Browsing by Author "Balan, Valerian"

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Efectul îngrășământului Foliar pistachio mix plus NPA asupra randamentului și calității fructelor de cireș
(CEP USM, 2024) Balan, Valerian; Vamasescu, Sergiu; Russu, Stanislav; Buza, Cornel; Talpalaru, Dumitru
The objective of the study is to determine the effect of the Pistachio Mix Plus NPA foliar fertilizer based on nanotechnology on the yield and quality of cherry fruits. The research was carried out on the Ferrovia cherry variety, grafted on Gisela 6, planted at a distance of 4x1.5 m. During the years 2022-2024, the foliar fertilizer was administered in 4 phenophases of cherry flower bud development in the dose of 2.5 l/ha. Applying Pistachio Mix Plus NPA in three phenophases (white-pink bud, petal shaking, beginning of budding), fruit yield increased by 14.423.5%, and their weight increased by 4-18.1% in the treated varieties in relation to the witness.
Influence of planting distance and crown shape on the growth, productivity and quality of cherry fruits, grafted on Giseala 6 [Articol]
(Editura USM, 2025) Bîlici, Inna; Balan, Valerian; Șarban, Vasile; Russu, Stanislav; Buza, Corneliu; Talpalaru, Dumitru
The study on the influence of planting distance and crown shape on cherry fruits in the pedoclimatic conditions of the central and northern areas of the Republic of Moldova in the period 2018-2024 aimed at assessing the impact of these factors on the growth, productivity and quality of the fruits. In the research, trees of the Early Star and Samba varieties were grafted onto the Gisela 6 rootstock and managed under the Thin Spindle, Cupă and Kym Green Bush crown forms, planted at a density of 1250 trees/ha. The Kordia and Sweet Stefany varieties were grafted onto the same rootstock, but managed according to the Thin Spindle, Structured Vertical Axis and Improved Thin Spindle crown systems, planted at a distance of 4x1 m, with a density of 2500 trees/ha. For all variants, parameters such as total yield, diameter and mass of cherries, as well as soluble dry matter content and titratable acidity of the fruits were determined. The Early Star variety achieved the highest yield in 2022 when the trees were managed according to the Thin Spindle crown shape, with an average of 8.8 kg/tree. The Kordia variety recorded the highest yield (9.64 kg/tree) when the trees were managed according to the Structured Thin Spindle crown shape. Although the Sweet Stefany variety has a lower yield overall, the highest production was obtained in the variant with management according to the Structured Vertical Axis system, with a yield of 7.11 kg/tree.
Intensitatea luminii în coroana pomilor de cireş formaţi după coroana fus zvelt
(CEP USM, 2024-10-07) Balan, Valerian; Bilici Inna; Russu, Stanislav; Buza, Cornel; Talpalaru, Dumitru
The research was carried out on the Kordia cherry variety, grafted on Gisela 6, planted at a distance of 4x1 m. The 7-year-old trees are led by the slender spindle crown with the rows located from north to south. The light intensity in the crown of the trees was measured at the end of July, in clear weather from 7 a.m. to 5 p.m., every 2 hours, with the universal pyranometer M-80 and the galvanometer GSA-1. Based on the obtained data, the light intensity was calculated in the center of the crown, along the axis and in the area where the crown joins, both in the East and West of the row of trees, as well as in the shadow of the crown.
New training systems for high-density cherry plantations [Articol]
(Editura USM, 2025) Balan, Valerian; Bilici, Inna; Șarban, Vasile; Russu, Stanislav; Buza, Cornel; Talpalaru, Dumitru
This research evaluated vegetative growth, yield and fruit quality of different cherry varieties using different crown-forming systems and planting densities. The experimental orchards were established in the central (2015) and northern (2018) areas of the Republic of Moldova, using Black Star, Regina, Summit and Sweet Sharetta varieties, grafted on Gisela 6 rootstock. For each variety- rootstock combination and training system, varying densities were established, ranging from 1250 trees/ha (for thin-stem, cup, Kym Green Bush) to 2500 trees/ha (for thin-stem, improved thin-stem, structured vertical axis). Black Star, grown under the thin-stem system, obtained the highest yields between 9.39 and 10.92 t/ha at the age of 7-10 years, significantly exceeding the values obtained for the crowns cup (8.11-9.67 t/ha) and Kym Green Bush (7.65-8.22 t/ha). For varieties Regina, Summit and Sweet Sharetta planted at 4x1 m spacing, the improved thin spindle crown shape had a modest impact on productivity, but provided important benefits on fruit size uniformity along the entire length of the axis.