Uticaj dužine rezidbe na masu grozda stonih sorti vinove loze

Each grapevine variety has specific pruning requirements to ensure optimal grape yield and quality. The main objective of this paper is to examine the impact of pruning severity on cluster size in table grapevine varieties under conditions of the Kozara wine-growing region. The research was conducted on the grapevine varieties ’Lasta’, ’Karmen’, ’Palatine’, ’Esther’,’Muscat Saint Vallier’ and ’Chasselas rose’. Cluster position on the fruiting shoot developing from both the spur and the cane,cluster weight and number of clusters per node were analyzed. Moving node position away from the base of the fruiting shoot results in reduced cluster size in ’Lasta’, ’Karmen’, ’Palatine’, ’Esther’ and ’Chasselas rose’, and in increased cluster weight in ’Muscat Saint Vallier’. A significant correlation was observed betweencluster weightandcluster position onthe fruiting shootin ’Lasta’, ’MuscatSaintVallier’and ’Palatine’.Svaka sorta vinove loze zahteva određen način rezidbe kako bi se dobio odgovarajući prinos i kvalitet grožđa. Osnovni cilj rada predstavlja ispitivanje uticaja dužine rezidbe na veličinu grozda stonih sorti vinove loze u uslovima Kozaračkog vinogorja. Istraživanje je obavljeno na sortama Lasta, Karmen, Palatina, Esther, Muscat St. Vallier i Chaselas rose. Kod ispitivanih sorti analizirana je pozicija pojave grozda na rodnim lastarima kondira i luka, njihova masa i učestalost pojave grozda na nodusima. Udaljavanjem pozicije nodusa od baze rodnog lastara, dolazi do smanjenja krupnoće grozda kod sorti Lasta, Karmen, Palatina, Esther i sorte Chasselas rose, a kod sorte Muscat St. Vallier do povećanja mase grozda.Utvrđena je značajna zavisnost mase grozda i pozicije pojave grozda na rodnom lastaru kod sorti Lasta, Muscat St. Vallier i Palatina

A Short Description of the First Serbian UV Index Model

A numerical model called “NEOPLANTA” for estimating solar UV irradiance and UV index under cloud-free conditions is being developed and tested at the University of Novi Sad in Serbia. In this paper, the model features, calculation procedure, and input parameters are described. Effects of the absorption of UV radiation by O3, SO2, and NO2 and absorption and scattering by aerosol as well as the air molecules in the atmosphere are included. The performance of the model has been tested with respect to its capability of UV index, which is a weighted integral between 280 and 400 nm of the solar irradiance reaching the ground. For this test 10-day data measured during the spring and summer in 2003, 2004, and 2005 are used. Data are recorded by the Yankee UVB-1 biometer located at the Novi Sad university campus (45.33°N, 19.85°E; 84 m MSL). Error analyses indicate that the modeled values agree well with the observation

THE CHARACTERISTICS OF FRUITFULNESS OF SOME INTERSPECIES GRAPEVINE CULTIVARS

The results of important agro-biological and technological characteristics of three grapevine interspecies cultivars (Medina, Gecej Zamatos, and Kristala) are presented in this study. The following parameters were monitored: the total number of developed shoots, the number of fertile shoots, the number of bunch per vine, grape yield, fertility coefficient, the average bunch weight, yield per hectare, bunch and berry structural indicators and grape quality expressed through the content of sugar in must. Statistically significant differences were determined between the examined varieties regarding following characteristics: the number and yield of bunches per vine, structural indicators of berries and sugar content in must. The analysis of the obtained results related with the analyzed grape varieties in the agro-ecological conditions of Northern Bosnia showed that those varieties can successfully be cultivated in similar or identical agro-ecological conditions

EFFECT OF CLIMATIC PARAMETERS ON UVOLOGICAL CHARACTERISTICS OF VARIETY ’BLATINA’

The winegrowing hills of Mostar as part of the Herzegovinian winegrowing region have always been considered suitable for grapevine cultivation, mostly as a result of favorable soil and climatic conditions. Herzegovina is home to a range of ancient grapevine varieties assumed to be indigenous to Bosnia and Herzegovina, with only few of them being commercial. 'Blatina' is the most important indigenous variety in Bosnia and Herzegovina intended for red wine production. It develops functionally female flowers, and the success of its fertilization is largely dependent on climatic conditions. This paper provides the results of an analysis of major bunch and berry characteristics conducted over a three-year period. Research findings indicate a significant effect of environmental conditions on some uvological traits of the bunch and berry