Roghaiyeh Karimzadeh

Roghaiyeh Karimzadeh
University of Tabriz · Department of Plant Protection

About

45
Publications
2,121
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132
Citations
Citations since 2017
34 Research Items
88 Citations
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20172018201920202021202220230510152025
20172018201920202021202220230510152025

Publications

Publications (45)
Article
Full-text available
Natural enemies can effectively reduce pest populations when they coincide spatially and temporally with those populations. Therefore, along with temporal synchronization, the spatial association of pests and natural enemies is also necessary to increase the efficiency of biological control. The aims of this review were to assess the current state...
Article
BACKGROUND Mediterranean flour moth or mill moth Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) is a common pest of cereals and flour throughout the world. In this study, eggs, 3rd instar larvae, pupae and adults of E. kuehniella were exposed to five elevated temperatures at a range of 45 to 65°C for 5, 8, 10, 14, 18, 23 and 30 min. The effect...
Article
In this study, initial efficacy of three pyrethroids, two inert dusts and their low-dose combinations were investigated on adults of Sitophilus granarius and Oryzaephilus surinamensis at laboratory conditions. The insects were exposed to treatments on concrete surface. The LC25 values of the pyrethroids and LD25 values of the inert dusts were estim...
Article
In this study the spatial distribution of codling moth, Cydia pomonella L. (Lepidoptera: Tortricidae) and its relation with topographic variables were investigated. The study was conducted during three growing seasons, 2017–2019. The activity of adult males was monitored using delta-shaped traps baited with sex pheromone. Forty-five traps set at 50...
Article
Cucumber is one of the nutrients rich vegetables with high market value. Being an important vegetable, it also suffers from several insect pests. The vegetable leafminer (VLM), Liriomyza sativae Blanchard (Diptera: Agromyzidae) is important pest of vegetables and ornamental plants worldwide, including in Iran. To understand the damaging nature of t...
Conference Paper
Full-text available
Egg parasitoids have an important role in decreasing populations of sunn pest in the field' This study was conducted in growing seasons of 201'8 io 2010 in Gharamalek, an agricultural region to the west of Tabriz,Iran. Seven wheat fields were chosen and divided intg 1l x 11 m square grids for sampling. A 0.5 x 0.5 m quadrat was used as the sampling...
Conference Paper
Full-text available
Small walnut aphid (SWA) Chromaphis iuglandicola (Kaltenb) is a pest of walnut trees rn many regions. Population fluctuations as well as spatial dynamics of SWA was studied in Mamaghan (East Azarbaidjan province, Iran) walnut orchards during season 2012' Those factors that supposed may cause tendency including height (at two levels of top and botto...
Conference Paper
Full-text available
This study was conducted to determine distribution patterns and related parameters of spotted alfalfa aphid, Therioaphis maculata (Buckten) and pea aphid, Acyrthosiphon pisum (Haris) and two coccinellid species (Coccinella septempunctata and Hippodamia variegata) in six alfalfa fields during two growing seasons ,2016 and 2017. All fields were divid...
Article
Full-text available
Spatial Distribution of Chromaphis juglandicola (Kaltenbach) (Hem., Aphididae) in East Azerbaijan Walnut Orchards H. Mahdavi1, S. Iranipour2, A. Mehrvar3 and R. Karimzadeh2 1. M.Sc. Student, Department of Plant Protection, Faculty of Agriculture, Islamic Azad University, Tabriz branch, Tabriz, Iran. 2. Professors and Assistant Professor Respectivel...
Article
Full-text available
Among biological control agents of common sunn pest (CSP), Eurygaster integriceps Puton, egg parasitoids of family Encyrtidae have little been studied. The Encyrtidae can play different roles in a cereal agroecosystem depending on the level which it will occupy in the food chain. It means it can appear either as a primary parasitoid of CSP or hyper...
Article
Defoliation by the vegetable leafminer, Liriomyza sativae Blanchard (Diptera: Agromyzidae), was simulated by removing known amounts of leaf area with a hole punch in a glasshouse experiment that evaluated 21 combinations of defoliation intensity, timing and duration on cucumber yields. Defoliation was quantified in cm²‐days (leaf area removed x no....
Article
Full-text available
Determining the spatio-temporal distribution and association of pests and natural enemies would be useful for implementing biological control of pests and could also be used in site-specific pest management. In this study, the spatio-temporal distribution and association of aphids, plant bugs, and natural enemies were assessed in alfalfa fields usi...
Article
Full-text available
Small walnut aphid (SWA) Chromaphis juglandicola is an economic pest of walnut trees. Population fluctuation of SWA was studied in Mamaghan walnut orchards (East Azarbaijan Province, Iran).Three factors affecting population density of SWA, including vertical divisions of canopy (upper and lower half), geographical orientations of canopy (at four le...
Article
Full-text available
Elm trees are important landscape trees and sucking insects weaken the elm trees and produce large amounts of honeydew. The main objectives of this study were to identify main honeydew-producing pests of elm trees and do site-specific spraying against these pests. To map the spatial distribution of the sucking pests in the large scale, the study ar...
Article
Full-text available
• A 2‐year study was conducted aiming to characterize the spatio‐temporal association of spotted alfalfa aphid Therioaphis maculata Buckten (Hemiptera: Aphididae) and Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae) in alfalfa fields. • The present study was conducted in 0.5‐, 3.1‐ and 7.3‐ha alfalfa fields and at two spatial scales. The 0....
Article
Full-text available
Sunn pest Eurygaster integriceps Puton is the most destructive insect pest of wheat and barley in Iran. This pest is a univoltine insect that feeds and reproduces in the fields for only 2–3 months of the year and spends the rest of the year in resting sites. In Sunn pest management programs, the pest populations in the fields are estimated by monit...
Article
Full-text available
To determine pest population level and in order to make a proper action decision; proposing a prompt, accurate and reliable sampling technique is the most vital issue in IPM programs.The yellow sticky traps are the most common tools for insect sampling. They are easily and quickly used for trapping tiny flying insects such as small weeviles. Sugare...
Conference Paper
Full-text available
Small walnut aphid (SWA) chromaphis juglandicola (Kaltenb) has a continuous occurrence in walnut orchards of Azerbaijan region, northwest of Iran. Demographic studies are essential for predicting future population levels and provide a strong framework in decision makings in IPM programs" Two kinds of life tables were studied in this research. First...
Article
Full-text available
Small walnut aphid (SWA) Chromaphis juglandicola (Kaltenb) has a continuous occurrence in walnut orchards of Azerbaijan region, northwest of Iran. Demographic studies are essential for predicting future population levels and providing of a robust framework in decision makings in IPM programs. Two kinds of life tables were studied in this research....
Article
Full-text available
Eurygaster integriceps Puton (Hemiptera: Scutelleridae) is the most serious insect pest of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) in Iran. In this study, spatio-temporal distribution of this pest was determined in wheat by using spatial analysis by distance indices (SADIE) and geostatistics. Global positioning and geographic i...
Article
Full-text available
Sunn pest, Eurygaster integriceps Puton is a key pest of wheat and barley in Iran. In this study, the impact of site-specific spraying on control of sunn pest damage and densities of the natural enemies was compared with the whole-field spraying method in 2009 and 2010. Three plots were assigned to each spraying method and two others were left untr...
Article
Full-text available
Results of laboratory experiments are reported that tested the effects of five chitin synthesis inhibitors, diflubenzuron, cyromazine, lufenuron, hexaflumuron and triflumuron. on second instars of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Crysomelidae), originally collected from potato fields of Bostanabaad, a town 66...
Conference Paper
Full-text available
Sunn pest, E. integriceps, is the most serious insect pest of wheat and barley in Iran. Chemical insecticides are used to control this pest in places where its populations are high. Egg parasitoids have an important role in decreasing populations of this pest. Whole-field spraying suppresses natural enemies of this insect including egg parasitoids....

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Project (1)
Project
In this study, spatial distribution pattern of alfalfa leaf and root weevils was determined using geostatistics. This study was conducted in four alfalfa fields (0.4, 0.5, 3.1 and 7.3 ha) located in the experimental farm of Faculty of Agriculture University of Tabriz, Tabriz, Iran. The 0.4 and 0.5 ha fields were divided into 10 × 10 m grids and 3.1 and 7.3 ha fields were divided into 30 × 30 m grids. Weekly samplings were started at the end of winter and continued until the last clipping of the yield. Depending on the height of alfalfa plants, a 1 × 1 m quadrat and a standard sweep net were used for weevils sampling. One sample was taken from each grid. Spatial analyses of data were conducted using GS + 5.1.1. Degree of dependence (DD) was used for determining spatial dependency of data and spatial distribution pattern of alfalfa weevils. Distribution maps were produced using ArcGIS 9.3. DD values were > 26% for 97 out of 116 data series, indicated that weevils are aggregately distributed in the alfalfa fields and has medium to strong spatial dependency. These results provide useful information about ecology of leaf and root weevils in the alfalfa fields and can be used in site-specific management programs.