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INVESTIGATION OF THE EFFECT OF THE "NEW FORMULA" OF ZEOLITE ON THE QUALITY CHARACTERISTICS OF WINE ROOTSTOCK
(Village and Agriculture : [Book of Proceedings] / 5th International Scientific Conference, 30. September and 1. October, Bijeljina, 2022-10-01)
Biljana Korunoska
;
Vladan Pešić
;
Maksim Baković
Abstract In agricultural production, and in the specific case in viticulture production, the production of healthy food, that is the production of healthy plants and healthy and quality fruits, and especially the production of virus-free planting material, is still an actual problem. Global pollution has contributed to finding different innovative solutions in the production of healthy food and also in agricultural production and specifically in our trials in viticulture production, it is still very current of healthy and resistant plants and animals. In addition to the application of genetics and the selection of varieties, the choice of nutrition for the plant and the choice of soil improvers (part of the medium where the plant grows) are very significant in the problem. In particular, our investigations are aimed at improving the properties of the soil during the cultivation of rootstocks (mother plants) in viticulture production. The tests were carried out in the period 2017 - 2019, in the Skopje Vineyard. Grapevine rootstocks introduced in the Republic of North Macedonia were randomly selected. A significant segment in this treatment is that our "new formula" of the mineral zeolite, which is currently being tested in our laboratory, was used. This agent has proven to be very safe for use as a preparation for improving the properties of the soil, and also as an effective agent for protecting and improving the resistance of the grapevine rootstocks to diseases and pests. The treated plants had a better habit and better resistance to external conditions. This preparation is very suitable for use in organic production.
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IDENTIFICATION OF SOME AUTOCHTHONOUS AND REGIONAL GRAPEVINE VARIETIES ACCORDING TO O.I.V. DESCRIPTORS FOR CERTAIN CHARACTERISTICS
(Journal of Agricultural, Food and Environmental Sciences Vol 76 No 8 (2022) 70-78, 2022-10)
Biljana Korunoska
;
Vladan Pešić;
;
Klime Beleski
;
Stevan Stojcović
ABSTRACT Our studies included some autochthonous and regional grape varieties grown in the Republic of North Macedonia. The autochthonousvarieties were examined -White winter, Konchanka, Stanushina, Ohrid black and Ohrid white, and the regional varieties -Vranec, Prokupec, Smederevka, Zilavka and Zupljanka were examined.The tests were divided into three methodological units. The first method was applied to all varieties -data collection, history and comparison with other tests.The second method was performed on all varieties -ampelographic identification because we had samples from all varieties. In some of the varieties, the third method was performed, that is, genetic (DNA) identification was made in the period from 2010 to 2020 in different examination centers and at different times. The results are compared with the results of a study by Professor M. Aradhya of the USDA Research Center, Davis CA, USA. He has performed a wide range of genetic identification on a number of autochthonous varieties in Europe and Asia, including varieties in the Balkans.With the second method of examination -ampelographic identification according to O.I.V. descriptors we got the most realistic results. An ampelographic description of certain characteristics of the individual organs of the vine was performed and it was concluded that the varieties according to their anatomical and physiological characteristics belong to 2 groups: ecological-geographical group Black Sea varieties, subgroup Balcanica and ecological-geographical group Eastern varieties, subgroup Antasiatica.
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EXAMINATION OF THE PHENOTYPIC VARIABILITY OF THE MUSCAT HAMBURG VARIETY INTHE SKOPJE VINEYARD AS A BASIS FOR ISOLATING CLONES
(Journal of Agricultural, Food and Environmental Sciences Vol 76 No 7(2022) 82-90 2022-10, 2022-10)
Biljana Korunoska
;
Vladan Pešić;
;
Zlatko Prculovski
;
Nenad Bunjac
ABSTRACTThis paper describes the experiments performed on the Muscat Hamburg variety in the Skopje vineyard. Initial examinations were made in 2013-2014 in the collection plantations of the Agricultural Institute where the Muscat Hamburg variety was grown. In the then plantation were found 3 individual grapevines(units)in which differences in morphological and physiological characteristics were identified.Such grapevines are marked as individuals, monitored and taken from them for propagation material (they are vegetatively propagated by individual producers, and the seeds are used for laboratory tests). In fact, the phenotypic variability of the variety was monitored. In the following years, from 2013-2019, phenotypic variations were observed in other individualplantations and individual grapevines in the conditions of the Skopje vineyard.Most of the changes in the individual units of the Muscat Hamburg variety are manifested in the bunch, grain, fertilization, phenology, frost resistance and some technologicalcharacteristics. For example, in these units the grape is more compact, with better fertilization, darker color, the phenological feature of maturation takes place earlier and so on. Freezing resistance of these units is higher.They have the potential for better technological characteristics that would be used further for better product quality -wine, spirits and more.These units are the basis for obtaining improved properties in clonal selection and hybridization.

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