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1

Annual runoff and erosion losses of humus-silicate soil from two specific uses due to precipitation in one part of western Serbia

100%
Sekularac G., Stojiljkovic D.
Polish Journal of Environmental Studies
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2007
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tom 16
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nr 3
433-440
Erosion factors of a part of Western Serbia, that is, different precipitation amounts and intensities, influencing humus-silicate soil formed on the serpentine, with an 18% inclination toward the northwestsoutheast at the altitude of 300 m, enabled quantitative runoff amounts and soil losses of the fallow and of autochthonous vegetation plot to be defined over a three-year study period. Throughout the trial, the mean annual runoff from the fallow plot amounted to 28.75 l·m⁻², and erosion losses of the soil were 2648.42 g·m⁻². Mean annual runoff and soil losses from the autochthonous vegetation plot were 12.37 l·m-2 and 0.98 g·m⁻², respectively. The total variability of runoff from the fallow plot due to precipitations was 28.1% and that from the plot under autochthonous vegetation was 0.2%. The total variability of soil losses from the fallow plot, due to precipitation, was 43.6% and that from the plot under autochthonous vegetation was 49%.
2
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Influence of stock on physical and chemical traits of fresh apricot fruit

80%
Milosevic T., Milosevic N., Glisic I., Sekularac G.
International Agrophysics
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2013
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tom 27
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nr 1
The study was conducted to determine the effects of Myrobalan rootstock and Blackthorn interstock on fruit physical and chemical traits of five apricot cultivars. The results showed that cultivars grafted on Myrobalan rootstock appear to induce a higher fruit mass when compared with the Blackthorn interstock. Blackthorn interstock showed a tendency to induce a higher soluble solids/titratable acidity ratio than Myrobalan. Values of soluble solids content, total sugars, titratable acidity and fruit firmness between Myrobalan rootstock and Blackthorn interstock were not significant. Regarding cultivars, the greatest fruit mass observed in Roxana in both treatments, and the lowest in Biljana on Myrobalan and in Vera on Blackthorn. The lowest soluble solids, total sugars and soluble solids/titratable acidity ratio were found in Roxana in both variants of grafting, whereas the greatest titratable acidity also observed in Roxana in both cases, respectively. Based on the results from this study, the fruits of Roxana can be recommended for fresh consumption, whereas fruits of the other cultivars can be recommended for processing.
3

The content of some antioxidants in apple depends on the type of fertilization

61%
Murtic S., Civic H., Duric M., Paunovic G., Sekularac G., Behmen F., Krsmanovic M.
Polish Journal of Environmental Studies
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2013
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tom 22
|
nr 2
Different agro-technical measures are used in growing apples and fruit crops in general in an attempt to increase the rate of photosynthesis and, hence, both the quantitative and qualitative value of the fruit. Very rapid and effective results in terms of an increase in the above parameters can be achieved through adequate fertilization adapted to plant requirements. Fertilization can substantially alter and disrupt the course of plant development if fertilizers are inadequately applied, regardless of the adequately pre-determined plant nutrient requirements. The objective of this study was to evaluate the effect of four different types of fertilization on the pigment and antioxidant content of apple cv. Idared (Malus domestica cv. Idared) grown in orchards in the municipality of Gradačac. The results obtained show that fertigation and foliar fertilization induced the statistically highest increase in the test parameters. These types of fertilization, if adequately employed, provide nutrition to plants according to their requirements at a specific phenostage, leading to increased yields and enhanced fruit quality, and indirectly reducing nutrient leaching from soils – a frequent accompanying manifestation of other fertilization types.
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