Establishment of foundation nurseries of new grape varieties using method of green grafting in the growing conditions of the Tersko-Kuma sands
The aim of the work was to establish intensive type foundation nurseries of new grape varieties by an accelerated method. The paper presents the results of establishing foundation nurseries using sugreffage method of own-rooted plants of the ‘Tsvetochniy’ variety as a rootstock for new breeding table varieties ‘Ilya’, ‘Pamyati Smirnova’, ‘Bart’, ‘IRS’ on sandy lands of OJSC Vinkhoz Burunny of the Chechen Republic. Green grafting was carried out using method of oculation on green shoots with bud awakening at a height of 20-25 cm and 40-45 cm above the soil level, without bud awakening at a height of 20-25 cm. Based on the data results for 2018 and 2019, the prospects of establishing nurseries using method of green grafting were concluded. The best data on grafting survival ability and development was obtained in the variant of oculation with bud awakening at a height of 20-25 cm and ranged from 74% to 94%; in the variant with oculation at a height of 40-45 cm - 71% - 88.5%. The sugreffage method of bushes at a height of 20-25 cm above the soil level allowed harvesting the next year after grafting from 0.86 to 4.2 standard cuttings of new variety per one bush.