Browsing 2007. by Title
Now showing items 1-20 of 30
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Adaptive Potential for the Invasion of Novel Host Plants in the Bean Weevil: Patterns of the Reproductive Behavior in Populations That Used Different Host Plants
The goal of this work was to examine interpopulation patterns in the reproductive behavior of populations of bean weevil (Acanthoscelides obtectus Say; Coleoptera: Bruchidae) that had different levels of specialization ... -
Biological Traits of Botrytis cinerea Pers. Isolates Differently Sensitive to Dicarboximides
A study of biological characteristics of both field and laboratory isolates revealed that highly resistant isolates were morphologically different from their original wild types. The majority of them were less pathogenic ... -
Biology and Harmfulness of Unaspis euonymi (Comstock) in the Area of Belgrade
Unaspis euonymi (Comstock) (Homoptera: Diaspididae) is a very dangerous pest of Euonymus spp. Numerous scale colonies and a high level of plant infestation provoke drying of leaves, branches and whole plants. As a result ... -
Cacopsylla picta (costalis Flor, 1861) (Förster, 1848) (Homoptera, Psyllidae) a New Jumping Plant Louse Species on Apples in Serbia
Until recently only one jumping plant louse species Cacopsylla mali Schm. has been described on apples in domestic literature. Over the past few years investigations of Psylloidea on apples in Serbia have proved incidences ... -
Clavibacter michiganensis subsp. michiganensis, Bacterial Canker of Tomato: 2. Comparison of the Effectiveness of Extraction Procedures and Sensitivity of Methods for Detection in Tomato Seeds
Two seed extraction procedures, used for detection of Clavibacter michiganensis subsp. michiganensis (Cmm) in artifficially infested tomato seed lots, were evaluated. A comparison of the efficiency of pathogen detection ... -
Clavibacter michiganensis subsp. michiganensis, Bacterial Canker of Tomato: 2. Comparison of the Effectiveness of Extraction Procedures and Sensitivity of Methods for Detection in Tomato Seeds
Two seed extraction procedures, used for detection of Clavibacter michiganensis subsp. michiganensis (Cmm) in artifficially infested tomato seed lots, were evaluated. A comparison of the efficiency of pathogen detection ... -
Determination of Copper-Based Fungicides by Flame Atomic Absorption Spectrometry Using Digestion Procedure with Sulfuric and Nitric Acid
Copper-based fungicides can be effectively digested by treatment with a mixture of concentrated sulfuric and nitric acid in exactly 15 minutes for the rapid determination via copper using flame atomic absorption spectrometry ... -
Determination of Resistance Levels of Myzus persicae (Sulzer) by Biochemical Methods
Peach/potato aphid Myzus persicae (Sulzer) has developed three mechanisms of resistance: overproduction of one or two closely related carboxylesterases (E4 and FE4), production of modified acetylcholinesterase (MACE and ... -
Effectiveness of Spirodiclofen in the Control of European Red Mite (Panonychus ulmi) on Apple and Pear Psylla (Cacopsylla pyri)
The effectiveness of spirodiclofen, an acaricide and insecticide with a novel mode of action, in protecting apple from the European red mite (Panonychus ulmi) and pear from pear psylla (Cacopsylla pyri) was tested in ... -
Effects of Maize Density and Sowing Pattern on Weed Suppression and Maize Grain Yield
Plant competition in its basic sense can be defined as competition for resources such as light, water and nutrients. The intensity of crop competition, especially competition of row crops such as maize, mostly depends ... -
The Effects of Pollen on Serum Parameters, and Liver and Kidney Tissues of Rats
The objective of this study was to investigate any positive effects or possible side effects of the use of pollen. Mature male rats were fed pollen of three different plant sources (Trifolium spp., Raphanus spp. and ... -
The Effects of Spirodiclofen on Reproduction of Two-spotted Spider Mite (Tetranychus urticae Koch)
Laboratory bioassay was conducted to evaluate the effects of spirodiclofen on the survival, fecundity and fertility of two-spotted spider mite (Tetranychus urticae Koch) females treated as 3-days old adults with a series ... -
Efficacy of Rodent Control in Alfalfa and Wheat Crops Using Chemical and Natural Rodenticides
Biological efficacy of chemical and natural rodenticides in controlling rodents in alfalfa and wheat crops was investigated. The experiment was set up using a randomized block design with four replicates and 400 m2 plots ... -
Efficacy of Strobilurin-related and Multi-site Fungicide Mixtures Against Apple Scab
The efficacy of several fungicide mixtures in controlling Venturia inaequalis in apple was evaluated in field trials. The efficacies of Flint Plus (trifloxystrobin + captan) and Tercel (pyraclostrobin + dithianon) in ... -
Examination of Mutagenic Effects of GAL-57 Herbicide (Bentazone+Dicamba) Using Mouse Micronucleus Test
A micronucleus test was run to investigate mutagenic potential of the herbicide GAL-57, a formulated mixture of bentazone and dicamba. The test was applied to mice of both sexes (strain: CRL: NMRI BR) and the herbicide ... -
First Report of Tumorigenic Agrobacterium radiobacter on Raspberry in Serbia
During the spring of 2003, gall symptoms on the roots and crowns of young raspberry plants cv. Vilamette were observed near Valjevo. Phytopathogenic bacteria were isolated from diseased plant samples. Based on the ... -
First Report of Tumorigenic Agrobacterium radiobacter on Raspberry in Serbia
During the spring of 2003, gall symptoms on the roots and crowns of young raspberry plants cv. Vilamette were observed near Valjevo. Phytopathogenic bacteria were isolated from diseased plant samples. Based on the ... -
Headspace Solid Phase Microextraction in Pesticide Residues Analysis: 1. Optimisation of Extraction Conditions
The method of headspace solid phase microextraction (HS/SPME) was successfully used in a simultaneous multicomponent analysis of hexachlorobenzene (HCB), tefluthrin, heptachlor, aldrin, chlorpyrifos, fenthion and bifenthrin ... -
Headspace Solid Phase Microextraction in Pesticide Residues Analysis: 2. Apple Samples
Headspace solid phase microextraction method (HS/SPME), optimised previously for pesticide water solutions, was applied to trace residues of the pesticides chlorpyrifos, fenthion and bifenthrin in apple samples. One-hour ... -
Identification of Potato Virus Y Strains in Tobacco Crops
Five viruses: Potato Virus Y (PVY), Tomato Spotted Wilt Virus, Cucumber Mosaic Virus, Tobacco Mosaic Virus and Alfalfa Mosaic Virus, of which PVY was predominant, were detected by serological testing of tobacco samples ...