Snezana Tanaskovic - Academia.edu (original) (raw)
Papers by Snezana Tanaskovic
Contemporary Agriculture, Jun 1, 2019
From the economic perspective, the western corn rootworm (WCR), Diabrotica virgifera sp. virgifer... more From the economic perspective, the western corn rootworm (WCR), Diabrotica virgifera sp. virgifera (Col., Chrysomelidae), poses the gravest threat to the field maize production in Serbia. The purpose of this study is to examine the impact of WCR larvae on the morphology of maize characters during a low-level artificial egg infestation. A field experiment involving the Serbian cultivar 'NS-640' was carried ou Serbia, in 2016. In the experimental field, a total of 96 maize plants were selected, marked and arranged in 48 pairs. Each pair consisted of an infested plant (WCR eggs injected in the root zone) and an uninfested plant (distillate water injected in the root zone). The number of leaves, height and stem diameter of the plants observed were recorded. Root damage and root weight were measured and evaluated at the end of the trail. For the purpose of statistical analysis, the non-parametric Kruskal-Wallis one-way analysis of variance and a correlation matrix were used. The statistical analysis performed indicate a highly significant difference in the number of leaves and plant height between the infested and uninfested maize plants examined in July (the third field observation). During the last field inspection, significant differences were recorded only between the stem diameters of the infested and uninfested maize plants. A negative correlation was found to exist between the root damage and root weight of the plant pairs. There were positive correlations between the stem diameter, plant height and number of leaves of the infested plants, whereas positive correlations were found between the root damage and plant height of the uninfested plants.
Journal of Central European Agriculture, 2019
Sunflower seed treatments are inevitable measure that ensures protection from soil-dwelling insec... more Sunflower seed treatments are inevitable measure that ensures protection from soil-dwelling insects and pathogens at the first stages of plant development. Due to the ban of neonicotinoid based insecticides for the sunflower seed treatments, new registered preparations are put to test. The aim of this work was to assess the efficacy of currently registered insecticides against the wireworms (observed in field emergence and percent of damaged plants) and their effect on yield traits (yield, oil content and 1,000-seed weight) of the sunflower hybrids (Sumo 2 OR, Oliva and Novak) in comparison to previously used neonicotinoids. Seeds were treated with different pesticidal combinations: metalaxyl-m, metalaxyl-m + bifenthrine, metalaxyl-m + thiacloprid, metalaxyl-m + thiametoxam, and metalaxyl-m + imidacloprid. Twoway ANOVA and Duncan's multiple range tests were performed. Field emergence was not influenced by the treatment. Sumo 2 OR and Oliva emergence did not differ significantly among the treatments (78.3-88.3%; 83.0-91.3%, respectively), but for Novak it was significantly lower (79.3%) when treated with metalaxyl-m. The lowest percent of damaged plants was in the treatment with metalaxyl-m + thiametoxam (1.1-2.4%). However, it did not differ significantly among other treatments (2.4-3.9%), regardless on the hybrid. Novak had the highest average yield (3,938.1 kg/ha), followed by Sumo 2 OR (3,566.1 kg/ha), and Oliva (3,199.8 kg/ha), regardless on the applied seed treatments. The highest 1,000-seed weight was measured for Oliva. Given indicates that currently registered insecticides for the seed treatment of sunflower, such as Sonido and Semafor, can be adequate substitute to the banned neonicotinoids like Cruiser and Gaucho.
WCR and ECB are maize pest present worlwide in Corn Belt. The documented economic level of looses... more WCR and ECB are maize pest present worlwide in Corn Belt. The documented economic level of looses and plant damages of this two pests vary up to 100 %. Experiment was carried out in Vojvodina provance, region Bačka, during vegetation 2014-2015, from Jun until September. During weekly inpection for tree month we recorded present of WCR and ECB in pheromone traps. Both pests shows fluctuating flight during experimental years. The higest catch of WCR (71 specimens-8 August 2015) and ECB (14 specimens-14 August 2014). WCR flight shows similarity over the two years. But, ECB flight is more extended in 2015.
Contemporary Agriculture, Dec 1, 2016
Decline of pear trees in the region of Čačak (Serbia) is becoming a significant problem and a lim... more Decline of pear trees in the region of Čačak (Serbia) is becoming a significant problem and a limiting factor in the production of this fruit species. This phenomenon may be due to the damages caused by xilophagous insects, representatives of the family Scolytidae. Economically the most important species of this family is a pear blight beetle (Xyleborus dispar), which causes symptoms of decline and/or wilting of pear trees. Such damages have not been documented so far in the region of Čačak. The aim of this study was to determine the cause of sudden appearance of pear trees decline in an orchard in this region (locality of Miokovci). The orchard has 180 trees (Stark Delicious, Santa Maria and Williams) in the sixth year of vegetation. Inspections were carried out every 30 days (20 April-21 August 2016). Visual inspection identified X. dispar activity on 165 trees (about 92% of the trees in the orchard). Holes were registered on the trees up to a height of 160 cm and in all primary branches. The average number of entry openings on a random sample of 20 trees was 27 for the height from the soil surface to the first branch (70 cm), while it was 61 for the height up to 160 cm. The recommended treatment is eradication of pests with mandatory incineration (burning) of the collected plant material by the end of February of the following growing season. This is the first report of X. dispar as pear pests in the vicinity of Čačak.
Entomologia Experimentalis Et Applicata, Jun 3, 2023
Acta Agriculturae Serbica, 2017
Necessity for seasonal monitoring of economically most important pests in different crops, increa... more Necessity for seasonal monitoring of economically most important pests in different crops, increase input costs of their surveillance. In maize fields, Western corn rootworm-WCR (Diabrotica virgifera sp. virgifera) is economically the most important species and presents a limiting factor for production of maize in continuous cultivation. Its occurrence is usually monitored with pheromone traps. However, as previously mentioned they are time and money consuming due to constant need for field inspections. Since in research projects, finances predefined for weekly inspection of traps are most often non-eligible, there is a need for developing a novel approach for pest monitoring. The use of IT technologies along with commercially available pheromone traps could provide precise information about the situation in traps without frequent field inspections. Also, they are easy to maintain, manipulate and require minimum costs. This work aimed to assess the potential use and the precision of a sensor device with camera, in monitoring the WCR flight on pheromone traps. Sensor device equipped with small camera can capture images of a pheromone trap sticky base and transfer them to a remote server for review, storage and analysis. The main idea in this paper is to present a system that uses a
Journal of Central European Agriculture
Legumes are a rich source of valuable nutrients thus represent important component in human and a... more Legumes are a rich source of valuable nutrients thus represent important component in human and animal nutrition. The most important and often a limiting factor in legume production is the presence of seed pests, such as the bean weevil Acanthoscelides obtectus (Say, 1831). This work tested the suitability of three different legume species (common bean, faba bean and grass pea), the species with a growing interest in the human diet, for the development of the bean weevil, aiming to provide a reliable forecast of its population growth. After four months, been weevils consumed the highest percentage of the common bean kernels (70.79%), followed by the grass pea (53.13%), and faba bean (0.42%). The progeny production and population growth were significantly affected by the tested legume species. After each month, the total number of adults was the highest on the common bean, indicating its best suitability for the weevil's development. Based on the number of the emerged specimens after each month of the observation, the bean weevil development was unhampered and continuous also on the grass pea. The lowest number of emerged adults, in all observation periods, was in faba bean, indicating its low preference and suitability for the weevil's development. The population growth of the bean weevil was the highest on the common bean, followed by grass pea, and it fitted best to the quadratic equation model that enabled the prediction of the population growth of the bean weevil for each legume species in the next generations.
Applied Ecology and Environmental Research
Rice weevil, Sitophilus oryzae is one of the most devastating primary pests of stored grains. Adu... more Rice weevil, Sitophilus oryzae is one of the most devastating primary pests of stored grains. Adults feed mainly on endosperm, while larvae feed on germ, resulting in reduced germination and nutritional value of kernels. The influence of a commodity condition on the food preferences of S. oryzae has been well documented, but the influence of previous feeding experience ("natal habitat preference induction"-NHPI theory) has not yet been confirmed. This research aims to test the NHPI theory, to study the behavioural responses of S. oryzae virgin males and females to different grains (maize, wheat and barley) depending on rearing substrate and feeding history and to test host, feeding and oviposition preference. In a "Choice test", the host preference was determined based on the adult distribution on specific grains, feeding preferences based on grain damage (%) and grain loss (%), and ovipositional preference based on the progeny production. The results indicate that host, feeding and ovipositional preference of S. oryzae was not dependent on the previous feeding experience. Maize was the most preferential grain, regardless on the rearing substrate, for both male and female weevils. Grain damage, weight loss and progeny production were higher on maize, regardless on the rearing history.
Knowledge about relationship between plants and the environment, in which they vegetate, is one o... more Knowledge about relationship between plants and the environment, in which they vegetate, is one of the prerequisites for optimizing plant production. Therefore, monitoring systems play an important role in agriculture. These systems allow you to collect data about conditions in the field via sensor networks, which nowadays increasingly function in the concept of "Internet of Things". The data collected with sensor devices are processed on the server side through the "Complex Event Processing System". Those systems are characterized by the ability to define rules that are applied over the data at the same time as they are collected. On the basis of these rules detection of certain values, that are important to the user, would be achieved. By applying this system users in the shortest possible time would be informed about detected values and can take appropriate actions.Poznavanje odnosa između biljnih vrsta i životne sredine u kojoj se nalaze staništa gajenih bilj...
The application of technological and scientific achievements in the field of agriculture has open... more The application of technological and scientific achievements in the field of agriculture has opened a new era for the design and development of new tools for monitoring the health of plants. This paper presents an IoT system model with devices that the captured image with an infrared camera transmitted to a computer on the Internet, where IoT devices were based on the Rasberry Pi platform with the addition of appropriate Noir camera module. Users over the Internet could access processed photographs on the basis of which they can determine the intensity of photosynthesis of observed plants. IoT devices with the selected platform is characterized by low price, small size and easy implementation in localities with Internet access.Primena tehnoloških i naučnih dostignuća u oblasti poljoprivrede otvorila je novu eru za projektovanje i razvoj savremenih uređaja za praćenje zdravstvenog stanja biljaka. U radu je predstavljen model IoT sistema sa uređajima koji snimljenu fotografiju uz pomo...
Wordwide in maize fileds, the three different pheromone strains (Z, E, H) of European corn borer ... more Wordwide in maize fileds, the three different pheromone strains (Z, E, H) of European corn borer (ECB) are identified. The aim of the study was to investigate the presence of ECB pheromon strains in Vojvodina province, leading production area of maize in Serbia. In three years, the presence of different strains were verified. Population dynamic according to obtained data idicate high differences in population strenght. The occurance of this pest in the field fluctuates. The earliest cach was on June 2 nd (2016) and the latest on July 17 th (2014). In 2015, when the highest temperature and the lowest humidity were registerd, the first ECB specimen was caught on June 23 rd. The last catch of moths was earlier in vegatation on August 20 th (2014) and the latest on October 9 th (2016). In 2015 the last catch was on September 10 th .
Julius-Kühn-Archiv, 2018
One of the most important pests of stored grains is Plodia interpunctella (Hubner), whose larvae ... more One of the most important pests of stored grains is Plodia interpunctella (Hubner), whose larvae feed primarily on germinal part of the kernels, causing a reduction of seed germination and seed viability. This is detrimental for seeds of high category. However, seeds of different species within the same taxonomic family have different morphology (thickness of seed-coat, presence or absence of palea, palea loose or firmly attached to the seed etc.), which affects the susceptibility of seeds to P. interpunctella attack. The hypothesis was that seed hardness and the absence of palea could also significantly influence the life history of this pest. We assessed the suitability of different seeds from family Poacae (maize, wheat, barley, oats, ray, forage sorghum (variety), forage sorghum (hybrid), Sudan grass and millet) for P. interpunctella development and seeds susceptibility to pest attack (expressed in Susceptibility index –SI). The following parameters were monitored: larval mortal...
Julius-Kühn-Archiv, 2018
By assessing the degree of resistance of stored products to infestation by insect pests and corre... more By assessing the degree of resistance of stored products to infestation by insect pests and correlating it with physical, chemical and nutritional characteristics of products, we could gain a real insight in these pests feeding preferences, and consequently in their biology and ecology. The aim of this study was to assess the degree of resistance of five dried berry species (strawberry, raspberry, blackberry, black chokeberry and cranberry) to infestation caused by the major pest of dried berries, Plodia interpunctella. Susceptibility was rated based on the Index of susceptibility (IS) for insect development and the Susceptibility rating. Dried cranberries were absolutely resistant to infestation by P. interpunctella (IS = 0) - no larvae reached the adult stage. Four other dried berry species were also resistant (IS ranged 2.01 – 2.44). In other words, dried cranberries are very unsuitable food for P. interpunctella, while other four tested species were slightly more suitable. The c...
Computer vision as a tool enables automated processing of visual information and provides the pos... more Computer vision as a tool enables automated processing of visual information and provides the possibility of significant improvement of the agricultural production process. This paper presents the results of the application of the YOLO algorithm for monitoring bees at the entrance to the hive. The applied model achieved a detection accuracy of 92.86% and was implemented on a Raspberry PI 4 computer system. This small computer system can be used for further field testing, where the activity of bees at the entrance to the hive is monitored via video recording.
Gazi Entomolojik Arastirmalar Dernegi, 2021
Gypsy moth (Lymantria dispar (L.) is one of most important defoliating pests of deciduous trees. ... more Gypsy moth (Lymantria dispar (L.) is one of most important defoliating pests of deciduous trees. Due to increased environmental demands, the use of plant-based preparations is gaining in importance as a control option for this pest in forestry, agriculture and horticulture. The aim of this study was to evaluate antifeeding and insecticidal activity of 0.5, 1 and 2% extracts of Ailanthus altissima bark and leaves, and Morus alba leaves, against L. dispar larvae under laboratory conditions. Antioxidant capacity of plant extracts was determined, as well as the content of phenolic compounds by spectrophotometric and HPLC-DAD methods. Antifeeding and insecticidal effects were tested in a "no-choice" test. The highest content of all bioactive phenolic compounds was in A. altissima bark and M. alba leaf extracts. The lowest leaf consumption after 24 and 48 h was in A. аltissima bark (5.03, 9.30%, respectively) and M. alba leaf (1.44, 3.22%, respectively) extracts. A. altissima bark and M. alba leaf extracts expressed strong antifeeding activity. After 24 h, all extracts expressed slight insecticidal effect (2.25-17.50% of mortality). The mortality increased after 48 h in treatments with A. altissima bark extract, at all applied concentrations (40.0-57.50%) and M. alba leaves at 1 and 2% concentrations (30.0-62.50%). Our results indicate that extracts of A. altissima bark and M. alba leaves may act as effective low-cost natural protectants able to control the presence of gypsy moth in ecosystems. Extracts of A. altissima bark and M. alba leaves expressed strong antifeeding activity and significant insecticidal effect on gypsy moth larvae, at all applied concentrations.
Kragujevac Journal of Science, 2020
Verbascum species (fam. Scrophulariaceae) contain a high concentration of rotenone and verbascosi... more Verbascum species (fam. Scrophulariaceae) contain a high concentration of rotenone and verbascoside and traditionally have long been used as insecticides. This study is aimed to investigate the larvicidal efficacy of Verbascum thapsus L. and V. phlomoides L. methanolic extracts in the suppression of the Plodia interpunctella (Hübner, 1813), under laboratory conditions. The experiment was set up in two separate blocks (for two different extracts), each as 3˟3˟3 factorial trial: three concentrations of extracts (1, 2 and 5%) were tested against the three larval age groups (14, 14-28 and 28 days old) and each treatment was repeated three times. Mortality was recorded after 24, 48, 72, and 96 h. Both tested extracts were the most effective 96 h after the exposure in 5% concentration applied on the youngest larvae. Extract of V. thapsus caused the mortality of 64.00%, while in treatment with V. phlomoides extract mortality was 48.00%. Tested Verbascum extracts have shown moderate potenti...
Acta agriculturae Serbica, 2019
Contemporary Agriculture, Jun 1, 2019
From the economic perspective, the western corn rootworm (WCR), Diabrotica virgifera sp. virgifer... more From the economic perspective, the western corn rootworm (WCR), Diabrotica virgifera sp. virgifera (Col., Chrysomelidae), poses the gravest threat to the field maize production in Serbia. The purpose of this study is to examine the impact of WCR larvae on the morphology of maize characters during a low-level artificial egg infestation. A field experiment involving the Serbian cultivar 'NS-640' was carried ou Serbia, in 2016. In the experimental field, a total of 96 maize plants were selected, marked and arranged in 48 pairs. Each pair consisted of an infested plant (WCR eggs injected in the root zone) and an uninfested plant (distillate water injected in the root zone). The number of leaves, height and stem diameter of the plants observed were recorded. Root damage and root weight were measured and evaluated at the end of the trail. For the purpose of statistical analysis, the non-parametric Kruskal-Wallis one-way analysis of variance and a correlation matrix were used. The statistical analysis performed indicate a highly significant difference in the number of leaves and plant height between the infested and uninfested maize plants examined in July (the third field observation). During the last field inspection, significant differences were recorded only between the stem diameters of the infested and uninfested maize plants. A negative correlation was found to exist between the root damage and root weight of the plant pairs. There were positive correlations between the stem diameter, plant height and number of leaves of the infested plants, whereas positive correlations were found between the root damage and plant height of the uninfested plants.
Journal of Central European Agriculture, 2019
Sunflower seed treatments are inevitable measure that ensures protection from soil-dwelling insec... more Sunflower seed treatments are inevitable measure that ensures protection from soil-dwelling insects and pathogens at the first stages of plant development. Due to the ban of neonicotinoid based insecticides for the sunflower seed treatments, new registered preparations are put to test. The aim of this work was to assess the efficacy of currently registered insecticides against the wireworms (observed in field emergence and percent of damaged plants) and their effect on yield traits (yield, oil content and 1,000-seed weight) of the sunflower hybrids (Sumo 2 OR, Oliva and Novak) in comparison to previously used neonicotinoids. Seeds were treated with different pesticidal combinations: metalaxyl-m, metalaxyl-m + bifenthrine, metalaxyl-m + thiacloprid, metalaxyl-m + thiametoxam, and metalaxyl-m + imidacloprid. Twoway ANOVA and Duncan's multiple range tests were performed. Field emergence was not influenced by the treatment. Sumo 2 OR and Oliva emergence did not differ significantly among the treatments (78.3-88.3%; 83.0-91.3%, respectively), but for Novak it was significantly lower (79.3%) when treated with metalaxyl-m. The lowest percent of damaged plants was in the treatment with metalaxyl-m + thiametoxam (1.1-2.4%). However, it did not differ significantly among other treatments (2.4-3.9%), regardless on the hybrid. Novak had the highest average yield (3,938.1 kg/ha), followed by Sumo 2 OR (3,566.1 kg/ha), and Oliva (3,199.8 kg/ha), regardless on the applied seed treatments. The highest 1,000-seed weight was measured for Oliva. Given indicates that currently registered insecticides for the seed treatment of sunflower, such as Sonido and Semafor, can be adequate substitute to the banned neonicotinoids like Cruiser and Gaucho.
WCR and ECB are maize pest present worlwide in Corn Belt. The documented economic level of looses... more WCR and ECB are maize pest present worlwide in Corn Belt. The documented economic level of looses and plant damages of this two pests vary up to 100 %. Experiment was carried out in Vojvodina provance, region Bačka, during vegetation 2014-2015, from Jun until September. During weekly inpection for tree month we recorded present of WCR and ECB in pheromone traps. Both pests shows fluctuating flight during experimental years. The higest catch of WCR (71 specimens-8 August 2015) and ECB (14 specimens-14 August 2014). WCR flight shows similarity over the two years. But, ECB flight is more extended in 2015.
Contemporary Agriculture, Dec 1, 2016
Decline of pear trees in the region of Čačak (Serbia) is becoming a significant problem and a lim... more Decline of pear trees in the region of Čačak (Serbia) is becoming a significant problem and a limiting factor in the production of this fruit species. This phenomenon may be due to the damages caused by xilophagous insects, representatives of the family Scolytidae. Economically the most important species of this family is a pear blight beetle (Xyleborus dispar), which causes symptoms of decline and/or wilting of pear trees. Such damages have not been documented so far in the region of Čačak. The aim of this study was to determine the cause of sudden appearance of pear trees decline in an orchard in this region (locality of Miokovci). The orchard has 180 trees (Stark Delicious, Santa Maria and Williams) in the sixth year of vegetation. Inspections were carried out every 30 days (20 April-21 August 2016). Visual inspection identified X. dispar activity on 165 trees (about 92% of the trees in the orchard). Holes were registered on the trees up to a height of 160 cm and in all primary branches. The average number of entry openings on a random sample of 20 trees was 27 for the height from the soil surface to the first branch (70 cm), while it was 61 for the height up to 160 cm. The recommended treatment is eradication of pests with mandatory incineration (burning) of the collected plant material by the end of February of the following growing season. This is the first report of X. dispar as pear pests in the vicinity of Čačak.
Entomologia Experimentalis Et Applicata, Jun 3, 2023
Acta Agriculturae Serbica, 2017
Necessity for seasonal monitoring of economically most important pests in different crops, increa... more Necessity for seasonal monitoring of economically most important pests in different crops, increase input costs of their surveillance. In maize fields, Western corn rootworm-WCR (Diabrotica virgifera sp. virgifera) is economically the most important species and presents a limiting factor for production of maize in continuous cultivation. Its occurrence is usually monitored with pheromone traps. However, as previously mentioned they are time and money consuming due to constant need for field inspections. Since in research projects, finances predefined for weekly inspection of traps are most often non-eligible, there is a need for developing a novel approach for pest monitoring. The use of IT technologies along with commercially available pheromone traps could provide precise information about the situation in traps without frequent field inspections. Also, they are easy to maintain, manipulate and require minimum costs. This work aimed to assess the potential use and the precision of a sensor device with camera, in monitoring the WCR flight on pheromone traps. Sensor device equipped with small camera can capture images of a pheromone trap sticky base and transfer them to a remote server for review, storage and analysis. The main idea in this paper is to present a system that uses a
Journal of Central European Agriculture
Legumes are a rich source of valuable nutrients thus represent important component in human and a... more Legumes are a rich source of valuable nutrients thus represent important component in human and animal nutrition. The most important and often a limiting factor in legume production is the presence of seed pests, such as the bean weevil Acanthoscelides obtectus (Say, 1831). This work tested the suitability of three different legume species (common bean, faba bean and grass pea), the species with a growing interest in the human diet, for the development of the bean weevil, aiming to provide a reliable forecast of its population growth. After four months, been weevils consumed the highest percentage of the common bean kernels (70.79%), followed by the grass pea (53.13%), and faba bean (0.42%). The progeny production and population growth were significantly affected by the tested legume species. After each month, the total number of adults was the highest on the common bean, indicating its best suitability for the weevil's development. Based on the number of the emerged specimens after each month of the observation, the bean weevil development was unhampered and continuous also on the grass pea. The lowest number of emerged adults, in all observation periods, was in faba bean, indicating its low preference and suitability for the weevil's development. The population growth of the bean weevil was the highest on the common bean, followed by grass pea, and it fitted best to the quadratic equation model that enabled the prediction of the population growth of the bean weevil for each legume species in the next generations.
Applied Ecology and Environmental Research
Rice weevil, Sitophilus oryzae is one of the most devastating primary pests of stored grains. Adu... more Rice weevil, Sitophilus oryzae is one of the most devastating primary pests of stored grains. Adults feed mainly on endosperm, while larvae feed on germ, resulting in reduced germination and nutritional value of kernels. The influence of a commodity condition on the food preferences of S. oryzae has been well documented, but the influence of previous feeding experience ("natal habitat preference induction"-NHPI theory) has not yet been confirmed. This research aims to test the NHPI theory, to study the behavioural responses of S. oryzae virgin males and females to different grains (maize, wheat and barley) depending on rearing substrate and feeding history and to test host, feeding and oviposition preference. In a "Choice test", the host preference was determined based on the adult distribution on specific grains, feeding preferences based on grain damage (%) and grain loss (%), and ovipositional preference based on the progeny production. The results indicate that host, feeding and ovipositional preference of S. oryzae was not dependent on the previous feeding experience. Maize was the most preferential grain, regardless on the rearing substrate, for both male and female weevils. Grain damage, weight loss and progeny production were higher on maize, regardless on the rearing history.
Knowledge about relationship between plants and the environment, in which they vegetate, is one o... more Knowledge about relationship between plants and the environment, in which they vegetate, is one of the prerequisites for optimizing plant production. Therefore, monitoring systems play an important role in agriculture. These systems allow you to collect data about conditions in the field via sensor networks, which nowadays increasingly function in the concept of "Internet of Things". The data collected with sensor devices are processed on the server side through the "Complex Event Processing System". Those systems are characterized by the ability to define rules that are applied over the data at the same time as they are collected. On the basis of these rules detection of certain values, that are important to the user, would be achieved. By applying this system users in the shortest possible time would be informed about detected values and can take appropriate actions.Poznavanje odnosa između biljnih vrsta i životne sredine u kojoj se nalaze staništa gajenih bilj...
The application of technological and scientific achievements in the field of agriculture has open... more The application of technological and scientific achievements in the field of agriculture has opened a new era for the design and development of new tools for monitoring the health of plants. This paper presents an IoT system model with devices that the captured image with an infrared camera transmitted to a computer on the Internet, where IoT devices were based on the Rasberry Pi platform with the addition of appropriate Noir camera module. Users over the Internet could access processed photographs on the basis of which they can determine the intensity of photosynthesis of observed plants. IoT devices with the selected platform is characterized by low price, small size and easy implementation in localities with Internet access.Primena tehnoloških i naučnih dostignuća u oblasti poljoprivrede otvorila je novu eru za projektovanje i razvoj savremenih uređaja za praćenje zdravstvenog stanja biljaka. U radu je predstavljen model IoT sistema sa uređajima koji snimljenu fotografiju uz pomo...
Wordwide in maize fileds, the three different pheromone strains (Z, E, H) of European corn borer ... more Wordwide in maize fileds, the three different pheromone strains (Z, E, H) of European corn borer (ECB) are identified. The aim of the study was to investigate the presence of ECB pheromon strains in Vojvodina province, leading production area of maize in Serbia. In three years, the presence of different strains were verified. Population dynamic according to obtained data idicate high differences in population strenght. The occurance of this pest in the field fluctuates. The earliest cach was on June 2 nd (2016) and the latest on July 17 th (2014). In 2015, when the highest temperature and the lowest humidity were registerd, the first ECB specimen was caught on June 23 rd. The last catch of moths was earlier in vegatation on August 20 th (2014) and the latest on October 9 th (2016). In 2015 the last catch was on September 10 th .
Julius-Kühn-Archiv, 2018
One of the most important pests of stored grains is Plodia interpunctella (Hubner), whose larvae ... more One of the most important pests of stored grains is Plodia interpunctella (Hubner), whose larvae feed primarily on germinal part of the kernels, causing a reduction of seed germination and seed viability. This is detrimental for seeds of high category. However, seeds of different species within the same taxonomic family have different morphology (thickness of seed-coat, presence or absence of palea, palea loose or firmly attached to the seed etc.), which affects the susceptibility of seeds to P. interpunctella attack. The hypothesis was that seed hardness and the absence of palea could also significantly influence the life history of this pest. We assessed the suitability of different seeds from family Poacae (maize, wheat, barley, oats, ray, forage sorghum (variety), forage sorghum (hybrid), Sudan grass and millet) for P. interpunctella development and seeds susceptibility to pest attack (expressed in Susceptibility index –SI). The following parameters were monitored: larval mortal...
Julius-Kühn-Archiv, 2018
By assessing the degree of resistance of stored products to infestation by insect pests and corre... more By assessing the degree of resistance of stored products to infestation by insect pests and correlating it with physical, chemical and nutritional characteristics of products, we could gain a real insight in these pests feeding preferences, and consequently in their biology and ecology. The aim of this study was to assess the degree of resistance of five dried berry species (strawberry, raspberry, blackberry, black chokeberry and cranberry) to infestation caused by the major pest of dried berries, Plodia interpunctella. Susceptibility was rated based on the Index of susceptibility (IS) for insect development and the Susceptibility rating. Dried cranberries were absolutely resistant to infestation by P. interpunctella (IS = 0) - no larvae reached the adult stage. Four other dried berry species were also resistant (IS ranged 2.01 – 2.44). In other words, dried cranberries are very unsuitable food for P. interpunctella, while other four tested species were slightly more suitable. The c...
Computer vision as a tool enables automated processing of visual information and provides the pos... more Computer vision as a tool enables automated processing of visual information and provides the possibility of significant improvement of the agricultural production process. This paper presents the results of the application of the YOLO algorithm for monitoring bees at the entrance to the hive. The applied model achieved a detection accuracy of 92.86% and was implemented on a Raspberry PI 4 computer system. This small computer system can be used for further field testing, where the activity of bees at the entrance to the hive is monitored via video recording.
Gazi Entomolojik Arastirmalar Dernegi, 2021
Gypsy moth (Lymantria dispar (L.) is one of most important defoliating pests of deciduous trees. ... more Gypsy moth (Lymantria dispar (L.) is one of most important defoliating pests of deciduous trees. Due to increased environmental demands, the use of plant-based preparations is gaining in importance as a control option for this pest in forestry, agriculture and horticulture. The aim of this study was to evaluate antifeeding and insecticidal activity of 0.5, 1 and 2% extracts of Ailanthus altissima bark and leaves, and Morus alba leaves, against L. dispar larvae under laboratory conditions. Antioxidant capacity of plant extracts was determined, as well as the content of phenolic compounds by spectrophotometric and HPLC-DAD methods. Antifeeding and insecticidal effects were tested in a "no-choice" test. The highest content of all bioactive phenolic compounds was in A. altissima bark and M. alba leaf extracts. The lowest leaf consumption after 24 and 48 h was in A. аltissima bark (5.03, 9.30%, respectively) and M. alba leaf (1.44, 3.22%, respectively) extracts. A. altissima bark and M. alba leaf extracts expressed strong antifeeding activity. After 24 h, all extracts expressed slight insecticidal effect (2.25-17.50% of mortality). The mortality increased after 48 h in treatments with A. altissima bark extract, at all applied concentrations (40.0-57.50%) and M. alba leaves at 1 and 2% concentrations (30.0-62.50%). Our results indicate that extracts of A. altissima bark and M. alba leaves may act as effective low-cost natural protectants able to control the presence of gypsy moth in ecosystems. Extracts of A. altissima bark and M. alba leaves expressed strong antifeeding activity and significant insecticidal effect on gypsy moth larvae, at all applied concentrations.
Kragujevac Journal of Science, 2020
Verbascum species (fam. Scrophulariaceae) contain a high concentration of rotenone and verbascosi... more Verbascum species (fam. Scrophulariaceae) contain a high concentration of rotenone and verbascoside and traditionally have long been used as insecticides. This study is aimed to investigate the larvicidal efficacy of Verbascum thapsus L. and V. phlomoides L. methanolic extracts in the suppression of the Plodia interpunctella (Hübner, 1813), under laboratory conditions. The experiment was set up in two separate blocks (for two different extracts), each as 3˟3˟3 factorial trial: three concentrations of extracts (1, 2 and 5%) were tested against the three larval age groups (14, 14-28 and 28 days old) and each treatment was repeated three times. Mortality was recorded after 24, 48, 72, and 96 h. Both tested extracts were the most effective 96 h after the exposure in 5% concentration applied on the youngest larvae. Extract of V. thapsus caused the mortality of 64.00%, while in treatment with V. phlomoides extract mortality was 48.00%. Tested Verbascum extracts have shown moderate potenti...
Acta agriculturae Serbica, 2019