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Papers by Branka Kresovic
Journal of Environmental Science and Health Part B-pesticides Food Contaminants and Agricultural Wastes, Apr 30, 2018
The results presented in this paper show an impact of the concentration of the aromatic organic c... more The results presented in this paper show an impact of the concentration of the aromatic organic cation on the adsorption of acetochlor on the surface of the organic-modified montmorillonite. Natural montmorillonite from Bogovina (Boljevac municipality, Serbia) was used for organic modification in this experiment. Cation exchange capacity of this montmorillonite (86 mmol 100 g ¡1 of clay) was determined using the methylene blue method. In pretreatment, montmorillonite was modified with NaCl. For the purpose of organic modification, three different concentrations of phenyltrimethylammonium chloride (PTMA) have been selected, based on calculated CEC value: 43 mmol 100 g ¡1 of clay (0.5 CEC), 86 mmol 100 g ¡1 of clay (1 CEC) and 129 mmol 100 g ¡1 of clay (1.5 CEC). The changes in the properties of the inorganic and organic modified montmorillonite were examined using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and batch equilibrium method. Freundlich coefficients show higher uptake of the herbicide by montmorillonite modified with PTMA, compared to inorganic-modified montmorillonite. The results also indicate the influence of the organic cation concentration on the adsorption of the selected herbicide.
Poljoprivredna tehnika, 2009
With the aim to create favorable conditions for the plant development, the studies on effects of ... more With the aim to create favorable conditions for the plant development, the studies on effects of different tillage systems on maize yield and porosity changes of the irrigated chernozem ploughing layer were performed. The objective of the studies was conventional tillage (disc harrow, plough, seedbed conditioner), reduced tillage (rotary shredder) and direct drilling (direct drill seeder). The analysis of variance performed for the yield shows significant differences among observed tillage systems carried out on chernozem. The highest yield of 12.39 t·ha-1 was obtained by conventional tillage. Yields obtained by reduced tillage and direct drilling were lower and amounted to 11.03 t·ha-1 and 10.03 t·ha-1, respectively. The conventional tillage system provided the most favorable porosity with the average value of 51.08%. With no statistical significant differences, the porous to solid phase ratio was somewhat less favorable in soil tilled by the rotary shredder (50.47 vol.%), while it was significantly lower in the variant of direct drilling (48.12 vol.%).
Poljoprivredna tehnika, 2011
This paper chronologically describes production of tractors in the world and in Serbia. The contr... more This paper chronologically describes production of tractors in the world and in Serbia. The contribution of our science to the development of the tractor industry is primarily expressed through comparative testing of tractors for purchase, which have foreign production license. Our tractor industry was technically at the same level with the tractor manufacturers which supplied the licenses. The paper chronologically presented the development of our science in field of tractors studies, during increased and decreased production of domestic tractor industry. The work is important for science and economic system for further studies of tractors production in Serbia with respect to the needs of Serbian agriculture. .
Maydica, Dec 3, 2008
... trend in ECB infestation in maize when the planting date was delayed from May 5 to June 5. Ho... more ... trend in ECB infestation in maize when the planting date was delayed from May 5 to June 5. However, these results are in con-trast with the previous finding of BACˇA et al. (1995), who reported an average participation of the first 112 F. BACˇA, S. GOIC´-DONDO, Z. KAITOVIC ...
Mineral fertilisation is one of essential cropping practices that provide optimal plant growth an... more Mineral fertilisation is one of essential cropping practices that provide optimal plant growth and development. In addition to basic fertilisation, it is possible to fertilise maize during the growing season with different types of fertilisers and their formulation. Leaf fertilisation provides plants fast uptake and utilisation of micro and macroelements, which contributes to better crop condition. The aim of this study was to test effects of two formulations of foliar mineral fertilisers applied at the 5-6 and 10-12 leaf stage, on the leaf area, height and yield of five maize inbred lines. The application of foliar fertilisers affected the increase of the average height and leaf area. Treatments with foliar fertilisers increased maize yields in comparison to control.
Poljoprivredna tehnika, 2011
X International Agriculture Symposium, Agrosym 2019, Jahorina, Bosnia and Herzegovina, 3-6 October 2019. Proceedings, 2019
Agroznanje - Agro-knowledge Journal, 2010
Sixth International Scientific Agricultural Symposium "Agrosym 2015", Jahorina, Bosnia and Herzegovina, October 15-18, 2015. Book of Proceedings, 2015
Agriculture and Forestry, Mar 31, 2016
Studies under different conditions of the soil moisture regime were carried out to determine the ... more Studies under different conditions of the soil moisture regime were carried out to determine the dependence of the ear weight and the grain weight per ear on the amount of water that gets on the chernozem surface during the growing season of maize. The trial was set up according to the block design in four variants: rainfed variant and three variants of the maintenance of soil moisture at the level of 80-85%, 70-75% and 60-65% of the field water capacity (FWC). Results show that the soil moisture regime very significantly affected the maize ear formation. The highest average values of the ear weight (389.2 g) and the grain weight per ear (320.3 g) were recorded in the variant 80-85% FWC. In relation to this value, values of the remaining variants were very significantly lower. A functional parabolic dependence of ear and grain weights on the water amount was established. With the total amount of water that got to the soil surface (x-510 mm) it can be expected that the ear of 370 g i...
Today's production is a technical improvement of tractors of previous production and this pro... more Today's production is a technical improvement of tractors of previous production and this production is a basis for the future tractor production. There are two principal approaches in the tractor development: 1) development according to adopted categorization and standardization at the country level, and 2) development based on the concepts of manufacturers. This is a reason for the increased number of different tractors types in the markets, which requires scientific and profession knowledge in their selection. The existing categorization and standardizations of tractors in Serbia absolutely corresponds to the modern tractor production, hence they are main support for the adequate choice of tractors that are suitable for our conditions of agricultural production. The modern tractor production includes a standard weight and variable ballast that is added to a tractor in dependence on its purpose. The trend of modern tractor production is directed to the increase of tractor engi...
The aim of these studies was to determine the number of plants per hectare that would provide the... more The aim of these studies was to determine the number of plants per hectare that would provide the maximum utilization of the genetic yielding potential of maize hybrids belonging to different FAO maturity groups and would also contribute to a rational use of seeds. The two-factorial trial was performed on irrigated chernozem in the period 2006-2008, according to the split-plot method with four replicates. Hybrids ZP 578 (FAO 500) and ZP 735 (FAO 700) observed in the combination with seven sowing densities (G1 - 40,816 plants ha-1, G2 - 50,125 plants ha-1, G3 - 59,524 plants ha-1, G4 - 69,686 plants ha-1, G5 - 79,365 plants ha-1, G6 - 86,286 plants ha-1 and G7 - 98,522 plants ha-1). Gained results show that statistically very significant differences in maize grain yields were obtained between the studied hybrids and the sowing densities. The lowest yields were recorded for all studied hybrids at the lowest sowing density (40,861 plants ha-1). The yield projection shows that the maxim...
Journal of Environmental Science and Health Part B-pesticides Food Contaminants and Agricultural Wastes, Apr 30, 2018
The results presented in this paper show an impact of the concentration of the aromatic organic c... more The results presented in this paper show an impact of the concentration of the aromatic organic cation on the adsorption of acetochlor on the surface of the organic-modified montmorillonite. Natural montmorillonite from Bogovina (Boljevac municipality, Serbia) was used for organic modification in this experiment. Cation exchange capacity of this montmorillonite (86 mmol 100 g ¡1 of clay) was determined using the methylene blue method. In pretreatment, montmorillonite was modified with NaCl. For the purpose of organic modification, three different concentrations of phenyltrimethylammonium chloride (PTMA) have been selected, based on calculated CEC value: 43 mmol 100 g ¡1 of clay (0.5 CEC), 86 mmol 100 g ¡1 of clay (1 CEC) and 129 mmol 100 g ¡1 of clay (1.5 CEC). The changes in the properties of the inorganic and organic modified montmorillonite were examined using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and batch equilibrium method. Freundlich coefficients show higher uptake of the herbicide by montmorillonite modified with PTMA, compared to inorganic-modified montmorillonite. The results also indicate the influence of the organic cation concentration on the adsorption of the selected herbicide.
Poljoprivredna tehnika, 2009
With the aim to create favorable conditions for the plant development, the studies on effects of ... more With the aim to create favorable conditions for the plant development, the studies on effects of different tillage systems on maize yield and porosity changes of the irrigated chernozem ploughing layer were performed. The objective of the studies was conventional tillage (disc harrow, plough, seedbed conditioner), reduced tillage (rotary shredder) and direct drilling (direct drill seeder). The analysis of variance performed for the yield shows significant differences among observed tillage systems carried out on chernozem. The highest yield of 12.39 t·ha-1 was obtained by conventional tillage. Yields obtained by reduced tillage and direct drilling were lower and amounted to 11.03 t·ha-1 and 10.03 t·ha-1, respectively. The conventional tillage system provided the most favorable porosity with the average value of 51.08%. With no statistical significant differences, the porous to solid phase ratio was somewhat less favorable in soil tilled by the rotary shredder (50.47 vol.%), while it was significantly lower in the variant of direct drilling (48.12 vol.%).
Poljoprivredna tehnika, 2011
This paper chronologically describes production of tractors in the world and in Serbia. The contr... more This paper chronologically describes production of tractors in the world and in Serbia. The contribution of our science to the development of the tractor industry is primarily expressed through comparative testing of tractors for purchase, which have foreign production license. Our tractor industry was technically at the same level with the tractor manufacturers which supplied the licenses. The paper chronologically presented the development of our science in field of tractors studies, during increased and decreased production of domestic tractor industry. The work is important for science and economic system for further studies of tractors production in Serbia with respect to the needs of Serbian agriculture. .
Maydica, Dec 3, 2008
... trend in ECB infestation in maize when the planting date was delayed from May 5 to June 5. Ho... more ... trend in ECB infestation in maize when the planting date was delayed from May 5 to June 5. However, these results are in con-trast with the previous finding of BACˇA et al. (1995), who reported an average participation of the first 112 F. BACˇA, S. GOIC´-DONDO, Z. KAITOVIC ...
Mineral fertilisation is one of essential cropping practices that provide optimal plant growth an... more Mineral fertilisation is one of essential cropping practices that provide optimal plant growth and development. In addition to basic fertilisation, it is possible to fertilise maize during the growing season with different types of fertilisers and their formulation. Leaf fertilisation provides plants fast uptake and utilisation of micro and macroelements, which contributes to better crop condition. The aim of this study was to test effects of two formulations of foliar mineral fertilisers applied at the 5-6 and 10-12 leaf stage, on the leaf area, height and yield of five maize inbred lines. The application of foliar fertilisers affected the increase of the average height and leaf area. Treatments with foliar fertilisers increased maize yields in comparison to control.
Poljoprivredna tehnika, 2011
X International Agriculture Symposium, Agrosym 2019, Jahorina, Bosnia and Herzegovina, 3-6 October 2019. Proceedings, 2019
Agroznanje - Agro-knowledge Journal, 2010
Sixth International Scientific Agricultural Symposium "Agrosym 2015", Jahorina, Bosnia and Herzegovina, October 15-18, 2015. Book of Proceedings, 2015
Agriculture and Forestry, Mar 31, 2016
Studies under different conditions of the soil moisture regime were carried out to determine the ... more Studies under different conditions of the soil moisture regime were carried out to determine the dependence of the ear weight and the grain weight per ear on the amount of water that gets on the chernozem surface during the growing season of maize. The trial was set up according to the block design in four variants: rainfed variant and three variants of the maintenance of soil moisture at the level of 80-85%, 70-75% and 60-65% of the field water capacity (FWC). Results show that the soil moisture regime very significantly affected the maize ear formation. The highest average values of the ear weight (389.2 g) and the grain weight per ear (320.3 g) were recorded in the variant 80-85% FWC. In relation to this value, values of the remaining variants were very significantly lower. A functional parabolic dependence of ear and grain weights on the water amount was established. With the total amount of water that got to the soil surface (x-510 mm) it can be expected that the ear of 370 g i...
Today's production is a technical improvement of tractors of previous production and this pro... more Today's production is a technical improvement of tractors of previous production and this production is a basis for the future tractor production. There are two principal approaches in the tractor development: 1) development according to adopted categorization and standardization at the country level, and 2) development based on the concepts of manufacturers. This is a reason for the increased number of different tractors types in the markets, which requires scientific and profession knowledge in their selection. The existing categorization and standardizations of tractors in Serbia absolutely corresponds to the modern tractor production, hence they are main support for the adequate choice of tractors that are suitable for our conditions of agricultural production. The modern tractor production includes a standard weight and variable ballast that is added to a tractor in dependence on its purpose. The trend of modern tractor production is directed to the increase of tractor engi...
The aim of these studies was to determine the number of plants per hectare that would provide the... more The aim of these studies was to determine the number of plants per hectare that would provide the maximum utilization of the genetic yielding potential of maize hybrids belonging to different FAO maturity groups and would also contribute to a rational use of seeds. The two-factorial trial was performed on irrigated chernozem in the period 2006-2008, according to the split-plot method with four replicates. Hybrids ZP 578 (FAO 500) and ZP 735 (FAO 700) observed in the combination with seven sowing densities (G1 - 40,816 plants ha-1, G2 - 50,125 plants ha-1, G3 - 59,524 plants ha-1, G4 - 69,686 plants ha-1, G5 - 79,365 plants ha-1, G6 - 86,286 plants ha-1 and G7 - 98,522 plants ha-1). Gained results show that statistically very significant differences in maize grain yields were obtained between the studied hybrids and the sowing densities. The lowest yields were recorded for all studied hybrids at the lowest sowing density (40,861 plants ha-1). The yield projection shows that the maxim...
Monografija koju prezentujemo naučnoj i stručnoj javnosti pod naslovom ORGANSKA POLJOPRIVREDNA P... more Monografija koju prezentujemo naučnoj i stručnoj javnosti pod naslovom ORGANSKA POLJOPRIVREDNA PROIZVODNJA-osnove planiranja i analiza poslovanja, je rezultat zajedničkog rada prof. dr Zorice J. Sredojević i prof. dr Snežane I. Oljače, redovnih profesora Poljoprivrednog fakulteta Univerziteta u Beogradu i dr Branke J. Kresović, višeg naučnog saradnika Instituta za kukuruz u Zemun Polju.
Pripremljena monografija je tematski koncipirana kroz suštinski dva dela. U prvom delu teksta su analizirani faktori održivosti poljoprivrede i značaj i uloga organske poljoprivrede kao posebnom pravcu zasnovanom na ekološkoj paradigmi kojom se čuvaju osnovni, teško obnovljivi ili neobnovljivi resursi. Zatim, istaknuti su principi zakonodavni i tehnološki kada je u pitanju poljoprivredna proizvodnja. Detaljno su analizirane agrotehničke mere kao sastavni deo tehnologije gajenja useva sa čitavim nizom modifikacija u poređenju sa konvencionalnom proizvodnjom. Posebno se daje osvrto na dva problematična segmenta, a to su: ishrana bilja i zaštita useva. Ističe se, naravno, i značaj sortimenta za ovu proizvodnju kada su u pitanju ratarske i voćarske vrste. Poseban naglasak dat je plodoredima kao srcu ovih organskih sistema gajenja. Apostrofira se značaj konsocijacija, tj. združivanja useva, zasnovan na originalnom proučavanju autora. Navode se brojne mere sračunate na povećanje biodiverziteta putem gajenja združenih i pokrovnih useva kod alternativnih vrsta (žita, mahunarki i industrijskog bilja).
U drugom delu, analizirani su i prezentovani procesi uključenja u organsku proizvodnju, period konverzije i sistem kontrole, kao veoma značajan segment priznanja i sertifikacije useva. Razmatrane su metode utvrđivanja troškova i sastavljanje kalkulacija za biljnu i stočarsku proizvodnju. Ističe se značaj ekonomske opravdanosti i efekti prerade organskih proizvoda. Knjiga se završava sa procenom i kontrolom rizika i finansijske snage. Na samom kraju monografije govori se o pojedinim oblicima udruživanja, formiranim klasterima i udruženjima kao značajnom segmentu koji okuplja zainteresovane za ovaj sektor od neposrednih proizvođača do krajnjih potrošača, konzumenata zdravstveno bezbedne i biološki vrednije hrane.
Istraživanjem u ovoj monografiji učinjen je jedan ozbiljan pristup analize stanja, predstavljene određene osnove planiranja i komparativne prednosti i pogodnosti u svim segmentima organske poljoprivredne proizvodnje za njeno širenje na ovim prostorima. Uz uvažavanje i prihvatanje određenih prednosti koje organska poljoprivredna proizvodnja ima, neosporno je da, pored složenosti problema koji je obrađen ovim istraživanjem, još mnogo toga treba sagledati i rešiti da bi se ona šire primenjivala.
Važno je istaći da je monografija nastala kao rezultat rada na projektima br. 46009 - Unapređenje i razvoj higijenskih i tehnoloških postupaka u proizvodnji namirnica životinjskog porekla u cilju dobijanja kvalitetnih i bezbednih proizvoda konkurentnih na svetskom tržištu i br. 179028 - Ruralno tržište rada i ruralna ekonomija Srbije - diverzifikacija dohotka i smanjenje siromaštva, koje je finansiralo Ministarstvo prosvete, nauke I tehnološkog razvoja Republike Srbije, 2010-2017.
Monografija je namenjena širem krugu korisnika. Studentima može biti od velike koristi pri pripremanja ispita na osnovnim, master i doktorskim studija na svim Poljoprivrednim i drugim srodnim fakultetima. U naučno-istraživačkim institucijama može da se koristi kao osnova daljeg razvoja agroekonomske teorije i primene novih metoda u poljoprivredi, ekonomike investiranja i racionalnog poslovanja u funkciji održivog razvoja. Mogu je koristiti stručnjaci u poljoprivrednoj praksi, kao i svi ostali koji se na bilo koji način interesuju za organsku proizvodnju. Radi sagledavanja prednosti i nedostataka za preusmeravanje na organsku proizvodnju, u monografiji se može naći niz korisnih saveta za poljoprivredne proizvođače, stručne savetodavne službe, stručnjake u preduzećima, zadrugama, zavodima i svima zainteresovanim za ekonomično obavljanje organske poljoprivredne proizvodnje
Izražavamo posebnu zahvalnost recenzentima prof. dr Dušanu Kovačeviću, prof. dr Dušanu Miliću i prof. dr Vladislavu Zekiću na korisnim predlozima i sugestijama koje su doprineli poboljšanju sadržaja teksta ove monografije.