Quality parameters of wine grape varieties under the influence of different vine spacing and training systems

Tkachenko, Oleg B.; Pashkovskiy, Aleksandr

doi:10.15673/fst.v11i2.512

Cited by 3 publications

(2 citation statements)

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“…Полуукрывное возделывание винограда нивелирует слабые позиции ягод, аромата, снижении размеров гроздей и плодов, уменьшении накопления сахаров и повышении кислотности сока. Виноград при этом созревает неравномерно с отставанием от обычных сроков [4].…”

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Shoot Load Effect on Grapevine Productivity and Vigor

Sirotkina¹

2022

Vestnik of Kazan State Agrarian University

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The research was carried out in order to determine the effect of the number of shoots in the structure of bushes on their fruitfulness and annual growth, plant yield and grape quality. The work was carried out using generally accepted methods in viticulture in 2019-2021 in Rostov region. The scheme of the experiment involved the study of the following norms for loading bushes with shoots: 30, 35, 40, 45 pcs/bush. The experiment was carried out on own root plantations of phylloxera-tolerant grape variety Pervenets Magarach, planted in 1986. The feeding area of one plant is 4.5 m2 (planting pattern is 3 m × 1.5 m), the shape of the bushes is a two-sided horizontal cordon with a spare sleeve and a restoration knot (semi-covering). According to fruitfulness (95 and 94%), variants with a load of 30 and 35 shoots/bush, respectively, were identified; fruiting coefficient (K1) in both variants is 1.69. According to the size of the crop, a variant with 45 shoots per bush was selected - 17.0 t/ha with the highest quality of berry juice (mass concentration of sugars 17.9 g/100 cm3, titratable acids - 8.4 g/dm2. In the change in the content of sugars and titratable acids in the yield according to the variants of the experiment, no regularity was revealed, the difference in the value of this indicator is not significant. In terms of the productivity of one vegetative shoot, plants were noted in the variant with 40 shoots in the structure of the bush (178 g).The length of the shoots decreased with an increase in their number per plant from 90 4 cm in the variant with a load of 30 shoots to 82.2 cm in the variant with the maximum number of shoots in the experiment (45 shoots). No pattern was noted in the change in the diameter of the shoots, no significant difference was found between the options. The proportion of shoot ripening had an inverse relationship with their numbers on the plant.

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Shoot Load Effect on Grapevine Productivity and Vigor

Sirotkina¹

2022

Vestnik of Kazan State Agrarian University

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“…Оптимальной нагрузкой считается та, при которой обеспечивается получение высокого урожая с хорошим качеством ягод без снижения силы роста куста и его плодоношения в последующие годы [1]. Исследователями доказано, что при перегрузке кустов урожаем ухудшается качество винограда, выражающиеся в ослаблении интенсивности окраски ягод, аромата, уменьшении размеров гроздей и ягод, снижении сахаристости и возрастании кислотности при неравномерном, запоздалом созревании [2]. Гусейнов Ш.Н.…”

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Yield and Quality of Grapes at Different Load Rates

Sirotkina¹

2021

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The article presents research data on the de-pendence of the yield of vineyards and the quality of grapes on the load of shoots. The studies were carried out at the All-Russian Re-search Institute of Viticulture and Winemaking named after Ya.I. Potapenko, Novocherkassk, Rostov region. On grafted vineyards of the Krasnostop Zolotovsky variety, load rates were studied: 20; 25; 30; 35 shoots per bush. The conducted studies revealed: the maximum yield was obtained in plantings with a load of 35 shoots per plant and amounted to 5.78 t / ha with the best grape conditions in the experi-ment – the mass concentration of sugars in ber-ry juice was 284, and the titrated acids were 6.2 g/dm3.

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Shoot Load Effect on Grapevine Productivity and Vigor

Adigamov

Negovora

Zimina

et al. 2022

Vestnik of Kazan State Agrarian University

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The efficiency of an agricultural car or tractor depends on the characteristics of the engine determined by the gas distribution mechanism (GRM). Traditional timing with fixed valve timing does not provide high-quality gas exchange at all engine operating modes. The aim of the work is to improve the characteristics of the engine by using the hydraulic drive of the timing valves. The drive allows you to turn off individual valves, set the moments of their opening and closing in an arbitrary way, provide several triggering of the internal combustion engine valves during the operating cycle. The drive is controlled by an electronic control unit (ECU). The advantage of the drive is its ease of integration into the internal combustion engine. The hydraulic drive ensures that the timing valves are lifted to a height of about 14 mm. The law of displacement of the valve, revealed experimentally, is close to trapezoidal. The use of a hydraulic valve drive has a positive effect on the "time-section" factor in the area of low and medium crankshaft rotational speeds. The increment of the factor "time-section" is due to the significant speeds of opening and closing the valves. Due to the peculiarities of the kinematic characteristics of the movement of the valves when using a hydraulic drive for their movement, the use of serial phases of gas distribution of the engine is impractical. Numerical modeling of the operation of the internal combustion engine determined the regularity of the change in valve timing from the high-speed operating mode of the engine. Optimization criterion is the achievement of maximum engine power. When choosing the valve timing, the possibility of meeting the intake and exhaust valves with the engine piston was excluded. The use of optimal phases leads to an increase in power up to 4.5% at a low crankshaft speed. With an increase in the speed mode, the increase in power decreases, and with a high frequency of rotation of the crankshaft, its slight decrease (1.4%) is observed. An increase in torque, up to a power utilization factor of 0.9, and its subsequent decrease, allow stabilizing the vehicle speed on a road with variable resistance. An increase in the working pressure in the hydraulic drive of the valves makes it possible to intensify gas exchange even at a high speed of rotation of the crankshaft

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Quality parameters of wine grape varieties under the influence of different vine spacing and training systems

Cited by 3 publications

References 3 publications

Shoot Load Effect on Grapevine Productivity and Vigor

Shoot Load Effect on Grapevine Productivity and Vigor

Yield and Quality of Grapes at Different Load Rates

Shoot Load Effect on Grapevine Productivity and Vigor

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