Browsing 3. Scientific Journals / Naučni i stručni časopisi by Title
Now showing items 135-154 of 405
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Effects of Chemical Thinning of Sour Cherrry Flowers
The paper presents the results of chemical thinning of sour cherry flowers of the Šumadinka and the Čačanski rubin cultivars. The treatments were performed in the full flowering phase, using 0.0025% concentration ... -
Effects of Crop Density and Herbicide Application on Floristic Composition and Structure of Maize Weed Community
The distribution of weeds in maize hybrids grown in different crop densities with and without herbicide application was observed in the present study. The floristic composition and structure of weed community were estimated ... -
Effects of Crop Density on Root Yield and Quality of Sugar Beet Cultivars Grown on the Soil Infested and Uninfested by Rhizomania
During a two-year period (1996-1997) we conducted studies on the effects of crop density on root yield and quality of sugar beet cultivars, susceptible and tolerant to rhizomania, grown on the soil infested and uninfested ... -
Effects of Different Essential Oils on the Acceptability and Palatability of Cereal-Based Baits for Laboratory Mice
The aim of our study was to investigate the possibility of application of essential oils as additives in cereal-based rodenticide baits, at rates which prevent mould development and are applicable in humane medicine. ... -
Effects of Essential Oils from Thyme, Cinnamon and Clove on Mycelial Growth of Colletotrichum acutatum
Effects of the volatile phase of thyme, cinnamon and clove essential oils on Colletotrichum acutatum were investigated. Mycelial disc was placed in the center of the Petri dish (V=66 ml) containing PDA. Different volumes ... -
Effects of Insecticides on Strawberry Aphid Chaetosiphon fragaefolii (Cockerell) on Resistant and Susceptible Strawberry Genotypes
Strawberry aphid, Chaetosiphon fragaefolii (Cockerell), is the most important vector of strawberry virus. Breeding of genotypes resistant to this pest is an important preventive control measure, which can be compatible ... -
Effects of Irrigation on Yield and Composition of Principal Elements of Nutrients in Maize-Growing Soil
Extensive organic production under irrigation conditions requires greater amounts of NPK fertilisers. Furthermore, the mobility of fertilisers, especially of nitrogen, is greater under the increased soil moisture content, ... -
The Effects of Kingbo Biopesticide on Tetranychus urticae Koch Female Adults
Toxic and sublethal effects of the biopesticide Kingbo (oxymatrine 0.2% + psoralen 0.4%) on female adults of two-spotted spider mite (Tetranychus urticae Koch) were investigated in two laboratory bioassays. The assays ... -
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 ... -
Effects of Metribuzin on the Activity of Some Enzymes in Soil
Eeffects of metribuzin on the activity of some enzymes in soil was investigated. Trials were set up in the laboratory on a clay loam soil. Metribuzin was applied at 12.0, 24.0 and 60.0 mg/kg soil rates and soil samples ... -
The effects of monitoring the abundance and species composition of aphids as virus vectors on seed potato production in Serbia
Aphids are the most important vectors of potato viruses during the crop’s growing season. The most widespread and damaging viruses, the potato virus Y and potato leaf roll virus, are transmitted by aphids in non-persistent ... -
Effects of Organic Matter and Clay Content in Soil on Pesticide Adsorption Processes
The effect of organic matter and clay content on the adsorption of atrazine, acetochlor, clomazone, pendimethalin and oxyfluorfen in soil samples was studied. In order to determine whether and to what degree different ... -
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 ... -
Effects of salicylic acid elicitor against aphids on wheat and detection of infestation using infrared thermal imaging technique in Ismailia, Egypt
Wheat (Triticum sativum L.) is one of the most important cereal crops in Egypt. Insect pests, such as aphids, are major threats in terms of yield reduction. Induced resistance in wheat using salicylic acid as a foliar ... -
Effects of Shepherd’s Purse (Capsella bursa pastoris (L.) Medic.) on the Chemical Composition of Lucerne (Medicago sativa L.)
A study was conducted in a pure stand of lucerne (variety Viktoria) under natural weed infestation with shepherd’s purse (Capsella bursa pastoris (L.) Medic.) on a slightly leached chernozem soil under nonirrigated ... -
The Effects of Some Botanical Insecticides and Pymetrozine on Life Table Parameters of Silver Leaf Whitefly Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae)
The objective of this research was to assess the effects of extracts of two medicinal plant species: Allium sativum (Linn) and Calotropis procera (Aiton), and a formulation containing azadirachtin on life table parameters ... -
Effects of Spinosad and Abamectin on different Populations of Rice Weevil Sitophilus oryzae (L.) in Treated Wheat Grain
In laboratory conditions (25±1ºC and 60±5% r.h.) effects of natural insecticides spinosad and abamectin on five S. oryzae populations (laboratory, Šid, Gornji Milanovac, Žabari and Novi Pazar) were investigated. Both ... -
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 ... -
Effects of Sublethal Doses of Contact Insecticides on Offspring Production of Different Granary Weevil Populations
The effects of prior contact of granary weevil (Sitophilus granarius L.) parents from a laboratory population, a Belgrade Port population (selected with LD70 pirimiphos-methyl) and a Bijeljina population (selected with ... -
Effects of Two Formulations Based on Bacillus thuringiensis subsp. israelensis on Aedes aegypti Mosquito Larvae under Laboratory Conditions
Toxicity and persistence of two formulations based on Bacillus thuringiensis subsp. israelensis applied to Aedes aegypti mosquito larvae were tested under laborabory conditions. The formulations were: a) water dispersible ...