Belgrade, Serbia
Belgrade, Serbia

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Kovacevic D.,Galenika Fitofarmacija | Lemic J.,LAD Group | Damjanovic M.,Galenika Fitofarmacija | Petronijevic R.,Serbian Institute of Meat Hygiene and Technology | Stanic T.,Galenika Fitofarmacija
Applied Clay Science | Year: 2011

The adsorption-desorption of the pesticide fenitrothion on organo-montmorillonite, organo-clinoptilolite and organo-sepiolite was studied at different loadings of stearyl- dimethylbenzylammonium cations (SDBA). The SDBA retained by ion exchange mostly remained on the surface of the minerals after washing with an ethanol/water solution. The hydrophobic character of the organo-minerals with monolayer coverage of the surface was confirmed by adsorption of water vapor. The adsorption of organo-montmorillonite, organo-sepiolite and organo-clinoptilolite for fenitrothion increased with the surfactant loading up to the value of the cation exchange capacity (CEC) for montmorillonite and sepiolite and of the external cation exchange capacity (ECEC) for clinoptilolite. The adsorption of the most hydrophobic samples (M80, C7.5 and S15), at a concentration of the pesticide of 10mg/dm 3 in solution, was 99%, 89% and 95%, respectively. The maximal amounts of pesticide adsorbed on the organo-montmorillonite, organo-clinoptilolite and organo-sepiolite were 300μmol/g, 150μmol/g and 130μmol/g. The amounts of fenitrothion, released from organo-montmorillonite, organo-clinoptilolite and organo-sepiolite pesticide complexes into 0.005M diethylenediamine-pentacetic acid, 0.1M CaCl 2 and 0.1M triethanolamine solution after ten cycles were 20%, 40% and 50%, respectively. © 2011 Elsevier B.V.

Popovic T.,Institute for Plant Protection and Environment | Starovic M.,Institute for Plant Protection and Environment | Aleksic G.,Institute for Plant Protection and Environment | Zivkovic S.,Institute for Plant Protection and Environment | And 3 more authors.
Bulgarian Journal of Agricultural Science | Year: 2012

Common bacterial blight (CBB) in beans, caused by the bacterium Xanthomonas axonopodis pv. phaseoli (Xap), is an economically important disease worldwide which reduces crop yields and seed quality. Since there is no satisfactory chemical control for the disease, the use of resistant cultivars is an important management strategy. Sources of immunity are not yet recognized, but tolerance has been reported in several genetic stocks. The main objective of this study was to determine resistance to CBB on twenty-two local and foreign beans grown in Serbia. Two inoculation methods with Xap (spraying and multiple needles) as well as naturally infected plants in field conditions were taken for evaluation. The experiments were conducted in randomized complete blocks with three replications. Reaction to Xap was assessed as a diseased leaf area and the disease severity index was calculated. The analysis of variance (ANOVA) for disease ratings of leaf reactions indicated significant interactions between cultivars and lines. Results indicate that none of evaluated beans was immune and was found to be resistant to CBB. HR 45, Oreol and XAN 159, -208, -273 were weakly susceptible; Biser, Dobrudzanski rani, KB 100, -101, Medijana, Naya Nayahit, Panonski gradistanac, Panonski tetovac, and Sremac were susceptible while Balkan, Belko, Dobrudzanski rani 7, Dvadesetica, Galeb, Maksa, Slavonski zutozeleni, and Zlatko were highly susceptible cultivars and lines. The five weakly susceptible can be identified and recommend as possible sources of tolerance in plant breeding program.

Vrbnicanin S.,University of Belgrade | Bozic D.,University of Belgrade | Saric M.,University of Belgrade | Pavlovic D.,Institute for Plant Protection and Environment | And 2 more authors.
Acta Horticulturae | Year: 2012

A timely and proper weed control imposes the need to identify the floristic composition and biology of weed community in raspberry plantings. A survey was conducted in more than 40 raspberry plantings (southwest part of Serbia) and about 85 weed species (68 broadleaf and 17 grass species) were registered. At the study area, the predominant grass weed species according to abundance and cover values were: Panicum crus-galli L., Setaria glauca (L.) P.B., Setaria viridis (L.) P.B. and Digitaria sanguinalis Scop.; and broadleaf species: Amaranthus retroflexus L., Amaranthus hybridus L., Chenopodium polyspermum L., Erigeron canadensis L., Galinsoga parviflora Cav., Glechoma hederacea L., Polygonum lapathifolium L., Convolvulus arvensis L., Calystegia sepium R.Br. and Rubus caesius L. In biological spectra of weed flora and weed vegetation dominate annual (therophytes, 26) and perennial species from hemicriptophytes life form (25).

Dakic P.,Galenika Fitofarmacija | Matic L.,Galenika Fitofarmacija | Bozic D.,University of Belgrade | Vrbnicanin S.,University of Belgrade | And 3 more authors.
Acta Horticulturae | Year: 2012

Weed control in rapsberry and blackberry plantings during the 2007 vegetation season was evaluated using three herbicides: Casoron G (a.i. dichlobenil 67.5 g/kg) with application rates of 60 and 80 kg/ha, foliar treatments of Galop (a.i. paraquat 200 g/L) at 4.0 L/ha and Bonaca EC (a/o/ fluroxypyr-meptyl 360 g/L) at 0.8 and 1.0 L/ha. Bonaca (1 L/ha) showed the best efficacy against all broad leaf weed species and Casoron G (80 kg/ha) against all grass weed species. None of the combinations showed sufficient efficacy (>95%) against Cynodon dactylon or Sorghum halepense.

Ivanis G.R.,University of Belgrade | Lazarevic M.,Galenika Fitofarmacija | Radovic I.R.,University of Belgrade | Kijevcanin M.L.,University of Belgrade
Hemijska Industrija | Year: 2015

Pinch methodology was applied to the heat exchangers network (HEN) synthesis of nitric acid production. The integration is analyzed in two ways, and the results are presented as two different solutions: i) the first solution is based on the original heat transfer equipment arrangement and ii) in order to eliminate the shortages of the first solution the second HEN was obtained using process simulation with optimized process parameters. Optimized HEN, with new arrangement of heat exchangers, gave good results in energy and process optimization. © 2015, Association of Chemists and Chemical Engineers of Serbia. All rights reserved.

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