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Correlations between the quantity of foraged pollen, the number of foragers and the morphological traits of the honey bees
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2021-10-07) Jevtić, Goran; Anđelković, Bojan; Andjelković, Snežana; Zornic, Vladimir; Matović, Kazimir; Nedić, N.
In four-year monitoring of two generations of honey bee colonies (queen bees and their offspring), the correlation coefficients between morphological traits for the amount of foraged pollen, traits on which the foraging activity of honey bees depends. Considering morphometric traits, the tongue length, the length and width of the wings and basitarses were measured. In field conditions, scouts and forager bees were counted, the total amount of foraged pollen and the amount of foraged alfalfa pollen were measured. It was found that there is a very strong correlation between the amount of foraged pollen and the observed traits that determine the foraging activity of the honey bee, as well as the size of the basitarus at a statistically very significant level (p <0.01). There was a strong correlation between the traits that determine the foraging activity with each other (p <0.01). The size of the basitarsus (length and width) was strongly correlated with most traits. The wing length was in medium correlation with most traits (r = 0.3-0.6), while the wing width with all traits was weakly or negatively correlated. The length of the proboscis was in the medium strong correlation with most of the observed traits. It is weakly correlated with the width of the basitarus and the wing, and weakly to negatively correlated with the wing length.
EFFECT OF AZOTOBACTER SPP. ON INITIAL GROWTH OF GRASSES
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia University of Belgrade, Faculty of Agriculture, Serbia Mediterranean Agronomic Institute of Bari (CIHEAM - IAMB) Italy, 2023-10-05) Andjelković, Snežana; Sokolović, Dejan; Lugić, Zoran; Jevtić, Goran; Radović, Jasmina; Milenković, Jasmina; Babić, Snežana
The composition of the microbial community in rhizosphere can affect plant growth, nutrients uptake, and stress tolerance. In rhizosphere bacteria belonging to the genus Azotobacter there are free nitrogen-fixers promoting growth and health of plants. The aim of this research was to investigate the effect of different native isolates (SA74, SB94, MA7 and their combination) Azotobacter spp. on initial growth of plants tall fescue (Festuca arundinacea Scherb) and meadow fescue (Festuca pratensis Huds). The experiment was carried out in semi-controlled conditions. For this study, seeds of tall fescue cultivar Kruševački 20 (K-20) and meadow fescue cultivar Kruševački 21 (K-21) were planted in pots filled with alluvial soil with slightly acidic reaction. The height, green mass per plant, root length and root weight per plant were determined. Four variants of microbial inoculation were compared with the growth of non-inoculated control. The significance of difference between examined treatments was determined by Fisher’s LSD test (p<0.05). At tall fescue, applied isolate SB94 in all investigated parameters had a negative effect. The two other isolates as well as combination of three isolates had a positive effect on initial growth of plants. Only in plant height, the application of a combination of isolates did not have positive result compared to the control. At meadow fescue, inoculation with combined isolates positively influenced plant height andgreen mass per plant. Root length was significantly increased only in treatment with isolate MA7. The influence of inoculation on root weight per plant was not noted.
Effect of Nitrogen Fertiliser and Lime on the Floristic Composition, Soil Microbes and Dry Matter Yield of Danthonietum calycinae Grassland
(University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 2019-11-08) Zornic, Vladimir; Stevović, Vladeta; Lugić, Zoran; Andjelković, Snežana; Jevtić, Goran; Radović, Jasmina; Petrović, Mirjana
Natural grasslands are significant resources for forage production, which is not exploited enough, mostly because of low production, as a result of bad grasslands management. The research has been carried out on the association Danthonietum calycinae to evaluate the effects of different nitrogen application rates (N20, N80 and N140) and lime (1 tha-1) on the floristic composition, soil microbes and dry matter yield. Botanic composition was strongly influenced by the treatments, especially by N applications. Nitrogen fertilisation led to significant increase of grass species in the association (from 57% to 82%), while higher rate of nitrogen caused a significant decrease of plants from other families (especially legumes). Application of low and medium rate of nitrogen positively effect on microbial abundant in soil, but the highest dose (140 kg N) reduced all microbial count, except fungi. Mineral nitrogen fertilisation had a favourable effect on dry matter yield in all treatments. The highest increase in dry matter yield relative to the control was in N140 treatments (6.66 t ha-1). Results indicated that optimal applications of nutrients for this association is application of PK and lime and 80 kg of nitrogen which enable high yield (6.38 t ha-1) in comparison with control (3.16 t ha-1) and preserving soil fertility and the environment at the same time.
Effects of Additives and Mixing Alfalfa (Medicago sativa L.) with Red Clover (Trifolium pratense L.) at Different Ratios on Proteolysis, Fermentation Quality and Microbiota of Silage
(Institutul Național de Cercetare Dezvoltare Agricolă Fundulea, 2025) Lazarević, Đorđe; Đorđević, N.; Stevović, V.; Tomić, Dalibor; Marković, Jordan; Jevtić, Goran; Andjelković, Snežana
The nutrition of ruminants can be improved by using alfalfa silage, as well as red clover silage, as a low-cost source of proteins. However, proteins from ensiled legumes, especially alfalfa, have poor usability because of the high level of degradation in the rumen. This is a consequence of the intensive proteolytic processes during silage fermentation. In recent decades there were significant investigations of different materials and techniques which limit proteolyisis and contribute to a better usage of proteins from silage. This research was conducted with the aim of determining the effect of additives - two doses of oak tannin extract [6 g kg-1 of dry matter (DM) and 12 g kg-1 DM] and bacterial inoculant (Enterococcus faecium, Bacillus plantarum, and Bacillus brevis), as well as the effect of ensiled mixtures of alfalfa and red clover, in different ratios (100 : 0, 90 : 10, 70 : 30, 50 : 50, 30 : 70, and 0 : 100) on the content of protein fractions, the number of microorganisms, as well as fermentation quality parameters. The ammonia nitrogen (NH3-N) content, which is one of the main indicators of proteolysis, was generally equal at the different mixture and additive treatments as well as the pH value, and below the critical point of 10% which was probably the consequence of favorable conditions at every of the treatments. On the other hand, considering nonprotein nitrogen (NPN), as another of the indicators of proteolysis, there was a positive sign of the contribution of inoculant and red clover to the reduction of proteolysis in alfalfa only in case of the silage mixture with the 70% of red clover share. Increase in the share of red clover in the mixture generally caused growth in the number of lactic acid bacteria, as well as in the number of yeasts and molds.
ENVIRONMENTAL ASSESSMENT OF SOME HEAVY METALS IN SELECTED MEDICINAL PLANT SPECIES ALONG A BUSY ROAD IN VRNJAČKA BANJA, SERBIA
(Asociatia Carpatica de Mediu si Stiintele Pamantului, 2022-08-31) BABIĆ; MITRA; DAS MOHAPATRA; PAPOVIĆ; Milenković, Jasmina; Jevtić, Goran; Babić, Snežana; Andjelković, Snežana
This study reported the concentrations of Pb, Cd, Cr, Mn in parts of four medicinal plant species (Cichorium intybus L., Mentha×piperita L., Plantago lanceolata L., Verbascum densiflorum Bertol.) collected from two sites, one few meters away and the other 500 m away from a busy road in Vrnjačka Banja, Serbia. Heavy metals were determined by the atomic absorption method using atomic absorption spectrophotometer. Similar content of tested metals in the soil of the tested locations was recorded, only there was more manganese in the soil closer to the road. The highest concentrations of heavy metals were found in the roots of plants closer to the road. The leaves and stem contain smaller quantities of these metals than root, but there are differences between the studied plant species. In conclusion, all examined metals were present in higher concentrations in plants at the location closest to the road than at the location further away from the road.
Examination of Microbiological Properties of Agricultural Soils on Area the Municipality of Lučani
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2025-10-02) Jevtić, Goran; Andjelković, Snežana; Babić, Snežana; Lazarević, Đorđe; Racić, Nedeljko; Mitra, D.; Zornic, Vladimir
Forage quality of different Festulolium cultivars
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2022-10-06) Babić, Snežana; Sokolović, Dejan; Andjelković, Snežana; Petrović, Mirjana; Jevtić, Goran; Prijović, Mladen; Racić, Nedeljko
Hybrids created by crossing between genera Festuca and Lolium species are Festulolium.Crossing species of these genera aim to combine their positive characteristics, such as Festuca tolerance to abiotic stresses and edaphic and climatic conditions with the high quality and digestibility of Lolium perenne and Lolium multiflorum species. Forage quality of 15 different Lolioid Festulolium cultivars and six cultivars of Festuca and Lolium pure species were investigated in a moderate continental climate in Kruševac, Serbia. Plots in the trial (7,5 m2 ) were completely randomized, each in three replications. In the year of establishment, the plots were cut without weighing and taking samples. In the next two years, two cuts were taken. The first cut was done at the beginning of the heading (the first half of May) and the second in the first half of July. On dry samples, from two cuts, the content of crude protein, crude cellulose, crude fat, ash, ADF, NDF and ADL was determined by standard laboratory methods. Results were presented as two-year average values. The best dry matter quality of Festulolium cultivars was determined for cultivars AberNiche and Felopa. The highest crude protein content in the first cut was determined for AberNiche (187.1 gkg-1 ) and Felopa (169.6 gkg-1). Also, the same cultivars noted the lowest values for ADF (296.7 and 303.5 gkg-1 ) and for AberNiche was determined the lowest ADL contet (35.4 gkg-1 ) in the first cut. These cultivars are in the group of cultivars with the lowest NDF value. Based on the obtained results, it can be concluded that the analyzed Festulolium cultivars have a higher crude protein content compared to the cultivars of Festuca pure species, but lower than Lolium species.
Heritability and variability of the most important traits of meadow fescue synthetic cultivars
(Agricultural Research Ltd. Troubsko, Czech Republic, 2023-09-10) Babić, Snežana; Radović, Jasmina; Andjelković, Snežana; Petrović, Mirjana; Jevtić, Goran; Prijović, Mladen; Sokolović, Dejan
Meadow fescue (Festuca pratensis Huds.) is one of the most important perennial grasses for animal feed production on grasslands. It is characterized by high and stable yield potential and good biomass quality. The aim of this study was to determine the broad and narrow sense heritability and genetic (CVG%) and phenotypic (CVF%) coefficient of variation of the most important traits of two synthetic cultivars (Kruševački 21 and Pradel).
Impact of Rhizobial and Mycorrhizal Inoculation on Alfalfa Cultivars Productivity under Different Liming Levels
(Institutul Național de Cercetare Dezvoltare Agricolă Fundulea, 2025) Racić, Nedeljko; Stevović, Vladeta; Petrović, Mirjana; Lazarević, Đorđe; Andjelković, Snežana; Jevtić, Goran; Zornic, Vladimir
Alfalfa (Medicago sativa L.) is a highly valuable crop in agriculture, particularly due to its high biomass yield, rich protein content, and excellent digestibility, making it essential for livestock farming. However, its sensitivity to acidic soils presents a significant challenge for establishing and cultivating alfalfa in degraded soils. The current study aim was to investigate how selected inoculants affect alfalfa production when applied to acidic soils with different levels of liming. In this study, the effects of pre-sowing seed inoculation treatments of rhizobia - Sinorhizobium (Ensifer) meliloti (R), mycorrhizal fungi (MF), co-inoculation of rhizobia and mycorrhizal fungi (RMF), and control-no inoculation (C) -were assessed in three alfalfa cultivars (K-28, Zuzana, and Nijagara). The experiment was conducted under semi-controlled conditions in a completely randomized block design. The number of nodules, mycorrhizal colonization, dry matter yield of shoots and roots, protein yield, and phosphorus content were assessed. Acidic soil (pHKCl 4.55) was used for sowing, no lime (L0), alongside treatments on soils limed with 1 t ha-1 (L1) and 2.5 t ha-1 (L2) of Ca(OH)₂. The results indicated that rhizobia application increased the dry matter yield of shoots and roots. Protein yield at the L1 liming level ranged from 13.1 g/kg in the control treatment to 16.9 g/kg in the treatment with rhizobia, while at the L2 liming level, it ranged from 17.6 g/kg in the control treatment to 25.1 g/kg in the treatment with co-inoculation. Pre-sowing inoculation with mycorrhizal fungi and co-inoculation increased mycorrhizal colonization and phosphorus content. The results indicate the positive effects of both single and co-inoculation on alfalfa productivity. The impact of inoculation with the selected rhizobia strain was more pronounced in acidic soils than in limed soils and was cultivar-dependent. Therefore, the key to increasing alfalfa output in acidic soils is matching the strain with the cultivar.
Increasing Drought Tolerance of Forage Perennial Ryegrass by Improvement of Root Characteristics
(Institutul Național de Cercetare Dezvoltare Agricolă Fundulea, 2025) Prijović, Mladen; Sokolović, Dejan; Radović, Jasmina; Petrović, Mirjana; Zornic, Vladimir; Jevtić, Goran; Babić, Snežana
Perennial ryegrass is an essential cool-season forage grass with high-quality biomass, but with pronounced sensitivity to drought. This research was aimed to determine the shoot dry matter and root characteristics of perennial ryegrass populations (cultivar K-11 and breeding population LPb3). 20 randomly chosen individual plants per population were clonally divided into twelve small parts, remets, and transferred into the plastic root-screening tubes for root length and depth density evaluation. Also, shoot dry matter (SDM) was analysed. The experiment was designed as a two-factorial design, with population and watering regime as factors (2x4), in three replications. Analysed populations showed different root and shoot characteristics, especially in treatments with water reduction. Significant differences for most of the analysed traits between treatments were determined. Shoot dry matter was higher by 9% on average in population LPb3 than in K-11. Also, the dry matter yield of the total root dry matter (TRDM) was larger in LPb3. Treatments significantly affected total root dry matter, which dropped with water reduction. Dry matter of roots below 90 cm (RB90) was statistically significantly higher in LPb3 than in K-11. Broad-sense heritability and estimated genetic gain for most analysed traits were higher in population LPb3 than in K-11. The breeding of all investigated traits in this perennial ryegrass material is promising, especially in population LPb3.
Influence of stimulative feeding measures on spring development of bee societies in DB and LR honeycombs
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2022-10-06) Jevtić, Goran; Babić, Snežana; Andjelković, Snežana; Zornic, Vladimir; Lazarević, Đorđe; Matovic, Kazimir; Nedić, N.
In order for the bee colonies to make the most of the main pasture, and primarily black locust, it is very important that they are in good condition. It is necessary for the societies to reach their maximum strength at the beginning of the main pasture, and not for it to serve them for further development. The beekeeper himself plays a crucial role in the accelerated spring development of bee colonies. The aim of this study was to determine the effect of different ways of spring feeding on the strength of bee colonies and the food supply in them. The experiment was performed with companies that were in Db (Dadant-Blatt) and Lr (Langstroth-Ruth) hives. Four groups of companies were tested, and there were five companies in each group. The first group was supplemented with sugar syrup, enriched with vitamin-mineral complex - Foprsapine (10 drops per liter of syrup). The second group of societies was fed with honey dissolved in water (ratio of honey and water 1:1). The third group of the companies was fed with sugar dough (energy cake without additives). The fourth group of companies was supplemented with sugar syrup (the ratio of water and sugar was 1:1). At the beginning of the experiment, the societies in Lr hives had an average of 4.5 frames with bees, and 2.5 frames with a brood. In the Db hives, the societies occupied five frames with bees, and had 2.7 frames with a brood. At the end of the experiment Lr societies had 8.7 frames with bees, and 4.5 frames with brood, while Db societies had nine frames with bees, and 4.7 frames with brood. The experiment was performed at the apiary of the Institute for Forage Crops in Kruševac.
Morphological and Chemical Characterization of a Collection of Mountain Clover Natural Populations
(Institutul Național de Cercetare Dezvoltare Agricolă Fundulea, 2022) Petrović, Mirjana; Lugić, Zoran; Zornic, Vladimir; Andjelković, Snežana; Tomić, Dalibor; Milenković, Jasmina; Jevtić, Goran
With climate change evident, the possibility opens up of introducing into production a species that, although not characterized by high yield, nevertheless offers some other benefits for both the environment and man. One of these species is mountain clover (Trifolium montanum L.), a species widespread around European in the past, but due to agricultural activities its habitat has become fragmented and areas of mountain clover impaired. In the present study, the collection of nine natural populations of mountain clover originating from different parts of the hilly-mountainous areas of Serbia was tested in field conditions. We analysed different morphological traits (green plant biomass, stem length, internode number, number of lateral branches, leaf length and leaf width), dry matter quality traits (content of crude proteins, crude fibre and crude fat) as well as secondary metabolites (total phenolic content, flavonoid contents and antioxidative activity). We collected morphological data and plant samples during 2011 and 2012. We performed descriptive statistics to provide basic information about variables in the dataset, then calculated Shannon-Weaver diversity index (H’) and performed two-way ANOVA and principal component analyses (PCA). Analysing the broad range of data collected during two years, we found considerable morphological and chemical diversity amongst the collection of mountain clovers from central Serbia. Mean coefficient of variation (CV) in the morphological dataset ranged from 18% (stem length) to 57.6% (plant biomass) in 2011 and from 16.5% (leaf length) to 70.6% (stem number) in 2012. Dry matter (DM) parameters displayed the lowest CV, ranging from 6.1% (crude proteins) to 14.8% (crude fat), indicating that these parameters were less discriminative within the study collection. Over all populations, average crude protein content was 19.5%, and average crude fibre content was 27.3%. Total phenolic contents (expressed as gallic acid equivalent, GAE) ranged from 49.8 to 89.7 mg GAE g-1 DM, and flavonoid contents (expressed as rutin, Ru, equivalent) ranged from 66.8 to 142 mg Ru g-1 DM. Average antioxidative activity expressed in terms of IC50 values ranged from 177 to 426 mg ml-1 of methanol extract.
OPLEMENJIVANJE VIŠEGODIŠNJIH TRAVA U SRBIJI
(Centar za strna žita i razvoj sela Kragujevac, 2023-06-22) Babić, Snežana; Sokolović, Dejan; Radović, Jasmina; Andjelković, Snežana; Petrović, Mirjana; Jevtić, Goran; Prijović, Mladen
Višegodišnje trave kao baza održivog stočarstva i industrije stočne hrane, predstavljaju osnovnu hranu preživara u oblastima umerenog klimata. Kao komponente prirodnih i sejanih travnjaka koriste se putem ispaše, kosidbe, senaže i silaže. Najvažnije vrste za stočnu hranu su: ježevica, engleski ljulj, livadski vijuk, visoki vijuk, mačji rep, italijanski ljulj, francuski ljulj, crveni vijuk i bezosni vlasen. Genotip, odnosno sorta u prinosu višegodišnjih trava učestvuje i više od 50%. Najbitniji preduslov uspešnog oplemenjivanja je visok stepen genetičke varijabilnosti u početnom oplemenjivačkom materijalu. Osnovne osobine na koje se vrši selekcija su prinos i kvalitet suve materije, vreme stasavanja, perzistentnost i tolerancija na sušu i prinos semena. Najčešće korišćena metoda oplemenjivanja je fenotipska rekurentna selekcija, modifikovana u cilju skraćenja ciklusa selekcije i redukcije nepoželjnih ukrštanja, praćena polikros metodom ukrštanja i formiranjem sintetičke sorte. Dugogodišnjim oplemenjivačkim radom u Institutu za krmno bilje Kruševac je stvorena 21 krmna i 1 parkovska sorta višegodišnjih trava.
The Eeffect of Oxalic Acid on the Control of Varroa Destructor During Autumn Season 2023 and 2024
(Faculty of Agriculture, University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina, 2025-10-02) Nedić, N.; Vojt, D.; Matović, K.; Jevtić, Goran
The effect of actinomycetes application on green mass yield of red clover
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2021-10-07) Andjelković, Snežana; Lugić, Zoran; Babić, Snežana; Milenković, Jasmina; Jevtić, Goran; Marković, Jordan; Bekčić, Filip
Red clover (Trifolium pratense L.) is one of the most important and widespread leguminous forage species in temperate agriculture, which is characterized by a high yield of quality biomass. Actinomycetes produce antibiotics and vitamins that act favourably on physiological processes in plants. These microorganisms are present in the soil, however the application of selected microorganisms for seed inoculation leads to better results in crop production. The experiment was carried out in vegetation pots in semi-controlled conditions. This research consisted of investigating the effect of actinomycetes (Streptomyces sp.) application on the green mass per plants of 12 cultivars of red clover of different geographical origin: K-27, K-32, K-38, K-39, Una, Kolubara, Viglana, Manuela, Wilo, Repio, Diana and Longevo. The effect of inoculation was determined out at the onset of flowering. The results obtained showed that the application of microorganisms could affect plant mass yield. The highest value for green mass per plant was achieved in cv. K-39 using inoculum that contained Streptomyces sp. The application of actinomycetes had a positive effect in the most cultivars of red clover and there was a statistically significant difference between inoculated treatments and control, indicating the justification of the use of these microorganisms in plant production.
The effect of additional feeding on production traits of honeybee colonies.
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2021-10-07) Nedić, N.; Vojt, D.; Matović, K.; Jevtić, Goran
The efficiency of use of oxalic acid and thymol in bee colonies against Varroa destructor during an active season.
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia, 2021-10-07) Nedić, N.; Vojt, D.; Matović, K.; Jevtić, Goran
THE IMPACT OF BREEDING HONEYBEES IN DIFFERENT REGIONS OF SERBIA AND BOSNIA AND HERZEGOVINA ON THEIR MORPHOMETRIC PARAMETERS
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia University of Belgrade, Faculty of Agriculture, Serbia Mediterranean Agronomic Institute of Bari (CIHEAM - IAMB) Italy, 2023-10-05) Ignjatovic, Aleksandar; Nedić, Nebojša; Mirjanić, Goran; Perišić, Predrag; Jevtić, Goran
In order to facilitate better comparative analysis, a sample of bees originating from Slovenia was also analyzed. A comparison was made between the values of the morphological parameters of the front wings of bees from the following locations: Svojnovo (I), Ražanj (II), Prokuplje (III), Zlatar (IV), Negotin (V), Čajniče (VI), Tuzla (VII), Višegrad (VIII), Bijeljina (IX) and Slovenia (X). The aim of the study was to determine the existence of differences between bees from various sites. The standard methodology included the measurement andanalysis of 11 angles on the front wing (A4, B4, D7, E9, J1, J16, K19, L13, N23, G18 and O26), wing length and width, and cubital index on samples of 15 bees each. Univariate statistical analysis was performed, and comparisons were made between locations using Duncan's Studentized Multiple Range Test. Based on the results of the statistical analysis, a highly significant difference was found between location I and locations II, IV, VII, VIII, and IX for angles A4 and B4. When comparing the value of angle E9, a statistically significant difference (p<0.01) was found between location IV and all other locations. In addition to the established differences between bees from individual localities, there are similarities that indicate the maintenance of a stable population of A. m. carnica in the region.
THE INFLUENCE OF ALTITUDE ON THE QUALITY OF HONEY IN CENTRAL SERBIA
(University of East Sarajevo, Faculty of Agriculture, Republic of Srpska, Bosnia University of Belgrade, Faculty of Agriculture, Serbia Mediterranean Agronomic Institute of Bari (CIHEAM - IAMB) Italy, 2023-10-05) Jevtić, Goran; Babić, Snežana; Andjelković, Snežana; Lazarević, Đorđe; Petrović, Mirjana; Matović, K; Nedić, N
The paper analyzed acacia, meadow and forest honey (honeydew) from Central Serbia. The parameters of honey quality were determined according to the methods of the Rulebook on the quality of honey and other bee products (Official Gazette of RS, 2015). Total nitrogen was determined by the micro-Kjeldahl method, and potassium and trace elements were determined by the AAS-method. In the case of acacia honey, the acidity and amount of mineral substances (ash) increase with the increase in altitude, while the amount of sugar (total, reducing and saccharose) and water decreases. The increase in altitude also had an impact on the quality parameters of meadow honey. With the increase in altitude, the amount of mineral substances and water in this honey increases, while the total sugars and sucrose decrease. The amount of analyzed macro and micro elements in meadow honey increased with altitude, with the exception of zinc (Zn). Honeydew from the hill area had the most ash and the lowest values for other parameters. In this honey, all minerals reach their maximum in the hilly area, and decrease in the plain and mountainous area. The exception is zinc (Zn), which is most abundant in honey from the plains. All analyzed honeys met the conditions prescribed by the Rulebook on the quality of honey (Serbia) and the Directives on the quality of honey in the European Union.
The influence of geographical area on morphometric parameters of honey bee in Serbia
(FACULTY OF AGRICULTURE University of Banja Luka, 2023-05-24) Ignjatovic, Aleksandar; Matovic, Kazimir; Jevtić, Goran; Nedić, Nebojša
During the evolutionary development of bees, in different parts of the world, under the influence of various environmental factors, different races with specific biometric characteristics appeared. In this study, morphological characteristics were measured on worker bee samples collected from seven different locations covering the territory of Republic Serbia. Three samples were taken from the territory of AP Vojvodina, namely from the Southern Banat district (Vršac; I), South Bačka district (Bač; II) and West Bačka district (Crvenka; III). From the central Serbia worker bees were originated fro different sites namely Rasina district (Aleksandrovac; IV), Zlatibor district (Lučani; V), Pešter (Sjenica; VI) and Bor district (Negotin; VII). The measurement included a total of 14 parameters, 11 of which were the angles on the forewing, while the other analyzed parameters were the length and width of the forewing and the cubital index. The results showed that there is a high statistically significant difference between the localities in the examined characteristics. From a total of 11 angles analyzed, statistical significance (p<0.01) of average values between localities was determined for the following angles: A4, J16, K19, L13, N23, G18 and O26. The analysis of the results of the length of the front wings and the cubital index showed a significant difference between the groups of bees.