Dremák P.'s research while affiliated with University of Debrecen and other places
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Publications (18)
Brown rot (BR) in relation to codling moth damage (CMD) is a key issue in apple production but the impact of these pests has not been assessed jointly. In addition, categorising cultivar reaction to these two pests for sustainable production systems could be essential for improving pest management. Therefore, in a 12-year study, 27 apple cultivars...
Hungarian sweet cherry production has been changed recently. Thanks to the favourable selling prices many new plantations were established in the last years. In the new orchards mainly spindle canopy are trained, although many type of crown forms are used all over the world. In our study slender spindle and bush canopy were evaluated with three cul...
In our examinations vegetative characteristics of 39 apple cultivars were evaluated in environmentally friendly production systems. In this paper number of the branches of the central leader in different high zones is shown. According to our results number of the branches of the axis is provably larger in the integrated production system, compared...
In this paper growing characteristics and fruit bearing parameters of ‘Lapins’, ‘Kordia’, ‘Sweetheart’ and ‘Regina’ sweet cherry cultivars grafted on vigorous Colt rootstock were evaluated at the University of Debrecen, Pallag Experimental Station. Based on our data five years old trees can be described with homogenous strong growing, but very week...
In this study effect of the environmentally friendly production systems on the brunch cross sectional area of apple trees trained to free spindle canopy are presented based on the data of 39 cultivars. According to our results branch thickness of the apple cultivars located in the lower, middle and upper region of the tree are more homogenous in th...
Sweet cherry is currently considered as a fruit with high interests. The amount of the produced yield is well saleable in the world and also in Hungary year by year, moreover often there is a shortage with the high quality fruits. Researches with the sweet cherry production focus on the intensity growing all over the world, namely the realization o...
Success of apple production is highly influenced by the applied production system and the planted cultivar. In this paper growing characteristics of 39 apple cultivars were studied in integrated and organic production systems. These kind of parameters are less studied in the cultivar and training system examinations, although they have huge effect...
Sour cherry can be considered as a special fruit species regarding the growing characteristics, as most of the cultivarsare characterized by strong balding. With the aging of the tree the inactive (passive) parts of the canopy are increasing steadily,so the productive cropping surface and the yielding capacity decrease significantly. In our experim...
Nowadays the condition of the good saleability of the fruit is the application of controlled environmentally friendly technologies.Success of the growing is basically influenced by the production value of the cultivars, and their flexibility to the different technologies. In ourexaminations the effect of the integrated and organic farming system ha...
In a 4-year Hungarian study, 10 apple cultivars (5 scab-resistant and 5 scab-susceptible) were evaluated for yield, scab incidence, codling moth injury, soluble solid concentration, and calcium content of fruit in high-density integrated and organic apple orchards. Yield was significantly higher in the integrated plots compared to the organic ones...
On the Experimental Farm of the Debrecen University at Pallag, a factorial experiment has been started at springtime of 2008 on an orchard of 12 year old apple trees ’Idared’ grafts on M 26 understocks. The first factor was the growing system (integrated versus ecological), the second was the intensity of pruning (strong versus moderate thinning of...
On the Horticultural Station of the Debrecen University, Pallag, two year old apple plantations of two varieties (‘Pinova’, ‘GoldenReinders’) have been studied, in autumn 2011. The growth of the cross section area of the trunk and the central axis were measured andcompared to evaluate the effect of two alternative growing technologies: integrated a...
The global changes in climate and meteorological conditions have many negative consequences, which may diminished withadequate measures. In our continental climate, the winter frosts but also the late spring frosts are always threatening. There are technologiesto avoid late frost damages (with spray irrigation or with smoking), but against winter m...
The flower production of four apple varieties have been observed grown in integrated and in ecological growing technologiesduring the spring of 2010. The trees produced in the last year (2009) nearly similar yields, so the effect of the technologies may causedifferences in the production of flowers. According to our results, the ecological technolo...
The two worldwide accepted environmentally freindly production systems are integrated and organic. The two systems showsconsiderably differences in several practical production technology elements. These effects come forward in generative processes (e.g.flowering, fruit setting) and vegetative features (e.g. growth). The aim of our study was to stu...
Ecological or biological growing techniques are generally recognised as actual trends in agricultural production. The objective ofour experiments is a comparison of apple fruits grown alternatively by integrated versus ecological technology. In a collection of varieties, thepossibility of the experiment was feasible. At the same time, a comparison...
An assortment of 17 pear varieties was examined in 2006 at Keszthely, Department of Horticulture, Georgicon Faculty of Agriculture, Veszprem University. The selected varieties were planted in 1980, grafted on seedling rootstock and represented the majority of existing pear plantations in Hungary. The main objective was the determination of suitabil...
The aim of our study was to investigate the relationship between micronutrient content of soil and leaf in an organic apple orchard. The experiment was carried out at the Experimental Site of the University of Debrecen, Centre of Agricultural Sciences at Pallag in an apple cultivar collection in Eastern Hungary in 2002-2004. The soil sampling was c...
Citations
... The differences in yield and disease/pest damage between integrated and organic management systems were extensively documented in previous studies and it was concluded that the production risk was higher in the organic orchards than in the integrated ones (e.g. Holb et al., 2012Holb et al., , 2017Holb et al., , 2022Reganold et al., 2001). Relatively few studies evaluated the differences in cost, income and revenue among various apple management systems (e.g. ...
... Therefore, the price of a cherry varies according to its size, firmness, fruit colour and sweetness. In breeding, a fruit width of 28 mm and above is one of the most sought-after characteristics for cherry cultivars (Csihon et al. 2018). In this study, there was a significant difference between local cultivars and genotypes regarding fruit width, but no difference was detected in fruit length. ...
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... They emphasize the higher antioxidant activity in strawberry (Fernandes et al. 2012), the higher soluble solid concentrations and calcium concentrations in apple (Holb et al. 2012) greater glucose and fructose concentrations of kiwi (Nunes-Damaceno et al. 2013), more bioactive substances in medicinal plants (Kazimierczak et al. 2015) produced in organic growing system compared to the integrated one, whereas others (Róth et al. 2007; Roussos 2011) did not show differences in the quality attributes of apple harvested from different production systems. In organic production systems, the differences in vigorous vegetative growth and fruit load were greater between the apple varieties than in integrated growing technology (Dremák 2011) which can be related to the response of the varieties to environmental stress. Climatic stress primarily water deficiency occurring during fruit development, causes large losses of yield, however its extent is influenced by the water stress tolerance of the varieties. ...
... Results of Francini et al. 's study (2022) show that Mg, Ca and K were the most abundant elements and concentrations varied significantly among the cultivars. Several authors found greater variations in levels of nutrients in different apple cultivars, indicating strong genetically controlled traits (Nachtigall and Dechen, 2006;Nagy et al., 2006). Worthington (2001) showed that fertilization have a positive effect on the accumulation of Mg. ...
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... In Hungary sweet cherry is a cultivated in 2800 hectares, as the annual production is about 15 000-18 000 tons per year (FAO, 2020). Based on the last decade sweet cherry belongs to the fruit crops with increased interest, thanks to the high demand of the fruits and favorable marketing trends (Csihon et al., 2017). ...
... It accounts for 60-65 % of all fruit production in Hungary, making it one of the most important areas of the fruit growing sector with an average of 550-600 thousand tons/year, so making it the 5th largest production area in Europe. Due to the continental climate, frost damage in autumn, spring and winter and the development of atmospheric drought in summer causes significant problems in apple growing areas (Csihon et al., 2015;Dremák et al., 2016). Nowadays, active protection methods against hail damage and various extreme weather conditions are available. ...
... Disease-tolerant/resistant and -susceptible cultivars exhibited differing levels of susceptibility in terms of FSI and PMIS in this study (Tables 11 and 12), consistent with findings from previous studies [70][71][72]. Our fertilizer treatments clearly demonstrated that complete nutrient supply (NPKMg) consistently reduced disease incidence for both diseases across most cases and years, especially on the disease-susceptible cv. ...
