Abstract. The aim of this article is to study the content of micronutrients in the soil of Terek sands region of the Chechen Republic and to identify the physiological response of the grape plants on micronutrients fertilization. The obtained data of the boron total content in the studied sandy soil showed that in 0-60 cm layer of the soil the boron total content ranges from 0.4 to 0.5 mg/kg, in 60-150 cm soil layer -from 0.75 to 0.78 mg/kg. The boron content in the sandy soils of studied area varies within wide limits and characterizes as insufficient. Fertilizing with boron is an effective agricultural technique for up-frost plants and productivity of grapes. This technique allows to increase the sugar content of the berries up to 0.8-1.4 g/cm 3 , while substantially reducing the acidity of the juice. The yield of grape crystal grade in the variant with background + N90 P90 K90 + 2 kg of active boron addition was 76.8 t/ha, which is higher than in the control at 34.2 t/ha. The increasing of sugar berries in this variant was from 0.8 up to 1.4 g/cm 3 . The highest rates for plants productivity were observed by introducing a complex of boron micronutrients, cobalt, manganese, molybdenum, zinc in the form VIII, wherein the yield totally was 89.4 c/ha.
In 2019-2020, experiments were laid on the fields of the ARRIV&W – Branch of FRARC with the aim of experimentally determining the phenotypic signs of compatibility of scion-rootstock combinations with the participation of grape varieties of interspecific origin Denisovskiy and Prestige and rootstock varieties Kober 5 BB and Riparia Rupestris 101-14 introduced to the State Register of Breeding Achievements of the Russian Federation, approved for use. According to the results of the studies, it can be concluded that the selection of the optimal scion-rootstock for growing the necessary scion varieties has a direct effect on the yield of seedlings, which, with the same level of agricultural technology, will minimize production costs for inoculating seedlings and repairing grape plantations. The influence of the rootstock variety on the phenotypic characteristics of the scion variety has been established. The yield of seedlings is the most objective indicator of the compatibility of the scion-rootstock combination. According to the research results 2019-2020. it was found that the yield of first-class seedlings of the Denisovsky and Prestige varieties significantly depends on the used rootstock variety. The Riparia Rupestris 101-14 rootstock has the highest yield of seedlings of the Denisovskiy variety, 45.4%, which is 21.6% more than on the Kober 5 BB rootstock variety. On the Denisovskiy variety, the seedling yield was 48.0%, which is 39.9% more than on the Kober 5 BB rootstock variety.
As a result of the studies, there has been obtained a new information aboutmanganese influence on productivity of grape plantations on sandy soils of theSouth Russia. Manganese fertilizing of 4 kg active ingredient per 1 ha on thebackground addition of nitrogen 90 kg ha-1, phosphorus 90 kg ha-1 and potassium90 kg ha-1 into a phase of grape sap flow contributes to higher yields and increasethe sugar content of the berries with a significant decrease in juice acidity ascompared with other variants. On determining the average weight of the fruit massthere has been found that manganese stimulates growth of berries significantlyincreasing their weight. The greatest effect of manganese fertilizer insertion isachieved on introducing it into the phase of sap flow at a dose of 4 kg ha-1 on thebackground of N90, К90, Р90. In order to expedite the recovery of vineyardsdamaged by frosts to enhance the development of reproductive organs 4 kg ha-1manganese into the phase of sap flow must be introduced on sandy soils.
The grafted grape culture is highly demanded in industrial production due to a number of advantages in comparison with its own rooted culture. The high cost of production of grafted seedlings and climate change necessitate a change in the planting depth of grape plantations for the Rostov region by reducing the length of the rootstock and the selection of optimal scion-rootstock combinations. In this regard, in 2019-2020, I was on the experimental field of the ARRIV&W – Branch of FRARC, an experiment was laid in order to study the effect of length (from 30 to 45 cm) and varieties (Kober 5BB and Riparia Rupestris 101-14) stock on agro biological indicators of grafted grape seedlings of the Denisovskiy variety. According to the research results, it was found that, depending on the length of the rootstock, with a length of 30 cm, there is an increase in the yield of grafts from the chamber to 82.65%, the survival rate to 82.5% and the final yield of seedlings to 52.4 cm. The greatest influence on the quality of seedlings was rootstock variety. The stock-rootstock combination Denisovskiy × Kober 5 BB has a low seedling yield from 15.5 to 24.6%, which is lower than the Denisovskiy × Riparia Rupestris 101-14 combination with a seedling yield from 36.4 to 52.4%. It can be concluded that, according to the results of the experiment, a positive dependence was revealed in the yield of grafted seedlings of the Denisovskiy variety with a rootstock Riparia Rupestris 101-14 and a rootstock length of 30 cm, in comparison with the widespread rootstock variety Kober 5 BB and a length of 45 cm.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.