Browsing 3. Scientific Journals / Naučni i stručni časopisi by Title
Now showing items 275-294 of 405
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Natural Enemies of Pseudaulacaspis pentagona Targioni-Tozzetti in Serbia
Five parasitoid and five predator species were registered on P. pentagona on 12 localities in Serbia and 27 in the area of Belgrade during 1997-2000. The parasitoid species registered were: Prospaltella berlesei (Howard), ... -
Naturally-Occurring Entomopathogenic Fungi on Three Bark Beetle Species (Coleoptera: Curculionidae) in Bulgaria
Bark beetles (Coleoptera: Curculionidae: Scolytinae) belong to one of the most damaging groups of forest insects and the activity of their natural enemies – pathogens, parasitoids, parasites or predators suppressing their ... -
New Formulation Types in Plant Protection: Emulsion, Oil in Water (EW)
Characteristics of emulsion, oil in water (EW) as a pesticide formulation system are surveyed. A short description is given of its formation and effect of surface active ingredients on the stability of such systems. ... -
Novel Approaches to Implementation of Pumpkin Resistance in Control of Viral Diseases
As there is a growing frequency of viral plant diseases in epidemic proportions, the possibilities for successful control are constantly being explored. Despite the fact that integral and simultaneous employment of ... -
Occurrence of Xanthomonas campestris pv. campestris (Pammel, 1895) Dowson 1939, on Brassicas in Montenegro
Brassicas form the most important group of vegetable crops in Montenegro. The cabbage (Brassica oleracea var. capitata) is most commonly grown, although other brassicas, particularly kale, Brussels sprout, cauliflower ... -
Oil Dispersion with Abamectin as Active Ingredient
Abamectin was developed as an insecticide, nematocide and acaricide for use on a variety of agricultural and horticultural crops. The products with this active ingredient can be found on the market mostly formulated as ... -
Optimal Timing of Fungicide Applications for the Control of Podosphaera leucotricha, the Causal Agent of Peach Rusty Spot in Serbia
Peach rusty spot has regularly occurred in Serbia in recent years, causing significant economic losses in the production of late maturing cultivars (Summerset, Suncrest, Fayette and O’Henry). Concerns regarding the ... -
Optimization and Research of Technological Parameters of Shut-Off Device of Biomethane Gas-Filling System
The paper gives overview of working principles, modeling and testing results of new patented shut-off device. This invention is created by co-founder of Hygen Ltd. and relies to another invention of this company, which is ... -
Optimization of Hydraulic Lifting System in IMR Tractors
Purpose of hydraulics lifting system in tractor is to obtain continuity in control of functioning with certain special tools which implements plow, i.e. should at least regulate the operation of the plow by„ position”, by ... -
Optimization of Process Parameters for the Production of Vegetable Chutney Powder for Its Maximum Nutrient Content
Vegetable chutney powder is a ready to cook product which is prepared using different ingredients. Vegetable chutney puree was dried using tray drier at different temperature and with different puree thickness. Response ... -
Optimization of the Electrical Parameters of Silicon Heterojunction Solar Cells
We used the AFORS-HET simulation program for hetero-junction solar cells modeling to determine how the thickness and material properties of the n-, i-, and p-layers affect the electrical parameters and the device performance. ... -
An Outbreak of Aspergillus Species in Response to Environmental Conditions in Serbia
The frequency and incidence of A. flavus and A. niger on barley, maize, soybean, sunflower and wheat grain, the abundance of European corn borer (Ostrinia nubilalis) moths and their interaction depending on weather ... -
Outbreak, Intensity of Infestation and Control of Two New Eriophyids, Aceria oleae and Shevtchenkella barensis, on Olive Nursery Plants in Montenegro
Only two species of eriophyoid mites, Ditrimacus athiasella Keifer and Oxycenus maxwelli (Keifer), have been registered in Montenegro until recently. Late in April 2007, chlorotic spots and deformations were found on ... -
Overcoming of Soil Contamination with Pesticides in Forest Nurseries Using the Activity of Microorganisms
The use of pesticides during cultivation of pine seedlings in forest nurseries results in the formation two phenotypes of teratomorph seedlings – conditionally normal and abnormal. Growing forest cultures from teratomorph ... -
Pathogenicity of P. terrestris on Maize Seedlings
Pathogenicity of P. terrestris was determined by the Knop’s medium slants method in test tubes. Isolates originated from the roots of maize (Zea mays L.), barley (Hordeum vulgare L.), Johnson grass (Sorghum halepense ... -
Pectobacterium carotovorum subsp. carotovorum – the causal agent of broccoli soft rot in Serbia
Soft rot symptoms were observed on broccoli plants in several commercial fields in the western part of Serbia. Six strains of bacteria were isolated from diseased tissues and identified as Pectobacterium carotovorum ... -
Pectobacterium carotovorum subsp. carotovorum – the Causal Agent of Calla Soft Rot in Serbia and Montenegro
Bacterial strains were isolated from above- and underground parts of diseased calla plants originating from different localities in Serbia and one locality in Montenegro. They were characterized by studying their pathogenic, ... -
Performance Evaluation of CI Engine on Diesel-Ethanol-Biodiesel Fuel Blends
The studies were conducted to standardize the level of constituents to obtain stable diesel-ethanol-biodiesel microemulsions prepared using anhydrous ethanol (200° proof) and aqueous ethanol of 195°, 190°, 185°, 180° and ... -
Pesticides and Arthropods: Sublethal Effects and Demographic Toxicology
Insecticides and acaricides designed to control primary harmful insects and mites may also variously affect some other arthopods present in an (agro)ecosystem (e.g. secondary pests, predators, parasitoids, saprophytes, ... -
Pesticides in Soil: Effects on Microorganisms
Since their discovery to the present day, pesticides have been an inevitable segment of agricultural production and efforts have been made to synthesize compounds that would share a required efficacy along with selectivity, ...