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Search Results: 1 - 10 of 1017 matches for " Mirjana Brme? "
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Distribution of Thysanoptera species and their host plants in Croatia
Emilija Raspudi , Marija Ivezi , Mirjana Brme , Stanislav Trdan
Acta agriculturae Slovenica , 2009, DOI: 10.2478/v10014-009-0016-y
Abstract: Sampling of thrips species and their host plants were carried out from 1993 to 1996 on 111 localities in Croatia. Samples of thrips were taken from 235 different plant species. 33 thrips species from suborder Terebrantia and 14 thrips species from suborder Tubulifera were found in research. The most abundant species were onion thrips (Thrips tabaci) and flower thrips (Frankliniella intonsa), which were found on host plants from 30 and 29 botanical families, respectively. Six new species for Croatia was recorded: Aeolothrips melaleucus, Oxythrips bicolor, Stenothrips graminum, Thrips linarius, Liothrips vaneeckei, and Poecilothrips albopictus.
THE IMPORTANCE OF WESTERN CORN ROOTWORM IN CONTINUOUS MAIZE
Marija Ivezi?,Ivana Maji,Emilija Raspudi?,Mirjana Brme
Poljoprivreda (Osijek) , 2006,
Abstract: Western Corn Rootworm (Diabrotica virgifera virgifera LeConte) is considered to be one of the most important and potentially most severe pest of maize worldwide. The pest was detected in Croatia for the first time in 1995. Since then it has been spread over all areas with maize production in Croatia. The economically most efficient and preventive control measure is crop rotation and growing maize hybrids that show toleranceto WCR. The trials were settled in the area near Dubosevica where in 2002 and 2003 the economic damages caused by WCR were up to 80%. The aim of this investigation is to determine damages on maize root caused by WCR and loss in grain yield on commercial maize hybrids in continuous farming. Pheromone traps, type Csal♀m♂N , were used in order to monitor WCR population dynamics. In the period of two months, 366 WCR adult beetles in total were captured. Root damage was evaluated according to Iowa Node Injury Scale and grain yield was measured and corrected to 14% moisture. Furthermore, the plant lodging, as a consequence of larval feeding, was assessed. The results have shown that root damage for hybrid Bc 5982 was1.15, and 0.73 damage was on Pr 35p 12 roots. The grain yield obtained from hybrid Bc 5982 was 11.7 t/ha, and Pr 35p 12 had 12.3 t/ha. Statistical analyses showed that there were no significant differences in root damage and losses in grain yield between the two investigated hybrids. Results of this investigation indicate that growing maize for 2 to 3 years in continuous farming, in the same field, would not cause economically significant loss in maize gain yield.
VIRULENT GROUP Ro1,4 POTATO GOLDEN CYST NEMATODES (Globodera rostochiensis WOLLENWEBER) IN CROATIA
Marija Ivezi?,Emilja Raspudi?,Mirjana Brme,Sanja Manduri?
Poljoprivreda (Osijek) , 2005,
Abstract: The potato golden cyst nematode (Globodera rostochiensis WOLLENWEBER) is very important potato pest. According to EPPO it is on the quarantines A2 list. This species was detected on the territory of Belice in 2001. In 2002 soil samples were taken on two treatments, one with potato in monoculture and the other on the wheat where potato was previous crop. Cysts extraction was done in the laboratory of nematology at the Faculty of Agriculture in Osijek and Swedish University of Agriculture Sciences, Department of Crop Science. Virulent group Ro1,4 was detected. More cysts were discovered in the monoculture potato soil (458/100 ccm of soil) than in the soil under the wheat (368/100 ccm of soil). In 2004 vitality of the cysts were analysed. Cysts from potato monoculture had higher vitality (203 larvae/ cyst) than cyst from the soil under wheat (38 larvae/cyst) with potato as previous crop.
THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999
Marija Ivezi?,Emilija Raspudi?,Dra?en D?oi?,Mirjana Brme
Poljoprivreda (Osijek) , 2000,
Abstract: Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest. The pest was spread in Croatia from 1995 to 1999 on 12,750 km2. In the area of Stara Gunja, hybrid OSSK 444 was sown in order to investigate the possibilities of controls WCR with below ground insecticides - Counter G-5, Dursban G-7,5 and Dotan G-5. With checking root for larvae and cocoons 0.02 larvae was estimated on treated plots and 0.05 larvae on untreated plots. The number of cocoons was 0.12 in treated, and 0.25 on untreated plots. The number of imagoes on silk was 0.05–0.10 per plant. The imagoes of the WCR were caught with Pheromone and Multigard traps from the third decade of June until the first decade of October. On the traps settled on the treated plot (336 m2), 1,376 imagoes were caught, compared to untreated plot (112 m2) where 431 imagoes were caught. The yield of corn was 8.03 t/ha in treatment with Dotan, 8.44 t/ha in treatment with Dursban, and 8.72 t/ha in treatment with Counter, while the lowest 7.98 t/ha was in control plot was. Low number of caught imagoes per plant, shows that, for now, the implementation of chemical preparations wasn’t justified. This kind of investigations should be continuing in the future, and the checking of corn roots must be done earlier in order to determine correct number of larvae on roots and the root damages.
CHEMICAL AND MECHANICAL CONTROL OF COLORADO POTATO BEETLE (Leptinotarsa decemlineata Say) ON POTATO IN AKOVO AREA
Kristijan Rack,Marija Ivezi?,Emilija Raspudi?,Mirjana Brme
Poljoprivreda (Osijek) , 2001,
Abstract: The aim of this investigation was to determine the efficacy in controlling Colorado potato beetles (Leptinotarsa decemlineata Say) by using chemical and mechanical methods of control. The field trials were carried out in 1999 and 2000 in the area of akovo. The aim was also to determine the differences between chemical and mechanical way of control, and on the base of the obtained results, give the recommendations for acceptable and profitable way in controlling Colorado potato beetle. This trial was carried out on the randomized block design, with five treatments in four replications and two locations. The variety Desiree was chosen for the investigations, because it is the most spread sort of potato on examined territory. Mechanical controls consist of collecting of all stages of pests, during the whole vegetation period, on the average every three days. Chemical controls were done by using three different preparations. Imidacloprid (Prestige FC 290) was used as one of the newly active substances for applications on the seed of potato tubers. During the vegetation, thiamethoxam and hexaflumuron were applied. Thy were dosed as it was recommended for each preparation. Average yield of potato in 1999 year showed statistically significant differences between chemical (63,5 t/ha) and mechanical (59,4 t/ha) controlling of Colorado potato beetle, compared to the control plot (54,8 t/ha). In the year 2000 (extremely dry year) this relation was opposite, the yield in chemical control was 38,3 t/ha, and mechanical 38,7 t/ha, while on the control plot it was 29,4 t/ha. These results justified the chemical and mechanical control of Colorado potato beetle. Mechanical control is recommended especially on small farms.
INFLUENCE OF EUROPEAN CORN BORER (Ostrinia nubilalis Hübner) ON CORN HYBRIDS IN NORTH-WEST AND EASTERN CROATIA
Zvjezdana Augustinovi?,Emilija Raspudi?,Marija Ivezi?,Mirjana Brme
Poljoprivreda (Osijek) , 2005,
Abstract: European corn borer (Ostrinia nubilalis Hubner) is one of the major corn pest in the world and in Croatia. Former investigations of corn borer in Croatia covered mostly its Eastern region. In trials conducted in 1998 and 1999 the research was extended to the North Western part of Croatia too. Macro trials were carried out with corn hybrids of FAO groups 200-600 at three localities: Kri evci, Agricultural institute Osijek and at Belje PIK Karanac. In 1998 the intensity of the corn borer attack at the locality of Belje PIK Karanac was about 37.92% and in Agricultural institute Osijek 80.83%. In 1999 it varied between 37.08% at the locality of Agricultural Institute Osijek and 71.20% at the locality in Kri evci. The estimated number of holes per plant in all three localities in both years was higher than the number of caterpillars. Length of damage per plant was between 0.38 and 18.80 cm. The data showed significant differences in the intensity of damaging effects on different localities while no significant differences concerning various hybrids were found.The statistical data concerning yield in both years showed significant differences among hybrids, localities and their interactions.
CONTROL OF WESTERN CORN ROOTWORM (Diabrotica virgifera virgifera LeConte) IN CORN PRODUCTION OF EASTERN CROATIA
Dra?en D?oi?,Marija Ivezi?,Emilija Raspudi?,Mirjana Brme
Poljoprivreda (Osijek) , 2003,
Abstract: A new insect pest - the western corn rootworm (Diabrotica virgifera virgifera LeConte) was identified in Croatia in 1995. The first objective of this research was to determine the population density of all stages, except eggs in commercial cor fields. The second objective was to investigate the efficacy of three organophosphate insecticides on larvae. The experiment was conducted in Gunja, Croatia in 1999 and 2000. Treatments were commercial corn hybrids (OSSK 444, OSSK 552, Florencia,) and three soil insecticides (terbuphos, chlorpyriphos-ethyl, chlormephos) applied at planting. Results showed the highest number of larvae per plant (0.70) in the untreated plot of OSSK 552. In 1999, significant differences in larval numbers occurred among hybrids, but not among the insecticides. In 2000, larval numbers only differed statistically between the insecticide treatments. The highest beetles population counted per plant was 0.55 in 2000. This population level is very close to economic threshold of 0.70 beetles per plant. Significant differences in beetle numbers per plant between hybrids were only detected in 2000. Pheromone traps containing the lure, Csal♀m♂N, caught significantly more beetles than the Multigard yellow sticky-trap. Terbufos was the only soil insecticide providing a significant yield advantage to the hybrids. Based on the current value of corn and cost of insecticide, terbufos is the only soil insecticide cost-effective for growers. These studies should be conducted with other insecticides, and growers should avoid planting corn after corn in their fields.
POPULATION DYNAMICS OF NEMATODES IN WINTER WHEAT
Mirjana Brme,Marija Ivezi?,Emilija Raspudi?,Ivana Maji?
Poljoprivreda (Osijek) , 2004,
Abstract: Population dynamics of nematodes in winter wheat were investigated during 2000/2001 years on the area of Knezevo in Baranya county, Croatia. The samples of soil were taken six times during the growing season (from sowing time in autumn, until the end of the vegetation). Total number of nematodes as well as number of genera occurred in samples increased during the vegetation period. Total number of nematodes was the lowest in October, and the highest in April. Similar results occurred in number of genera, the lowest in October, and the highest in March. Population of plant parasitic nematodes was highest in autumn period, and decreased during winter and spring period. Population of bacterivorous nematodes increased over the vegetation period, and were highest in spring. In May, bacterial feeding nematodes reached 65 % of all nematodes and became the most abundant feeding group in the investigation.
Maize Tolerance to Western Corn Rootworm Larval Feeding: Screening through Five Years of Investigation
Marija Ivezi?,Emilija Raspudi?,Mirjana Brme,Ivana Maji?
Agriculturae Conspectus Scientificus (ACS) , 2009,
Abstract: Research on maize tolerance to rootworm larval feeding was conducted in Osijek, Croatia in period from 2001 to 2005. Seven Croatian commercial maize hybrids were evaluated by measuring traits associated with resistance: root injury, root size and root regrowth. Hybrids were grown in monoculture in field trials in four replicates. Root injury was rated according to Iowa Node Injury Scale (0-3), and the Eiben 1-6 Scale, reversed, was used for root size and regrowth assessment. No significant differences were observed for root injury between the hybrids.However, injury was significantly different across the years and more damaged roots were observed in 2003 (1.606), 2004 (1.281) and 2005 (0.940) compared to 2001 (0.081) and 2002 (0.099). Root size and root regrowth differed significantly across the years of investigation, while differences between the hybrids occurred only for root regrowth. Hybrids OsSK 617, OsSK 602 and OsSK 596 appeared to be the most tolerant through all years of investigation measured by root regrowth.
Mobile and Terrestrial but Firmly Rooted on the River Banks: Biological Anthropology of Lepenski Vir and the Iron Gates Gorge Mesolithic  [PDF]
Mirjana Roksandic
Advances in Anthropology (AA) , 2012, DOI: 10.4236/aa.2012.23014
Abstract: Archaeological interpretation often links both the European Mesolithic and the complexity with reduced mobility and permanent or semi-permanent settlements. The Iron Gates Gorge (IGG) Mesolithic, on the banks of the Danube, with substantial formal disposal areas for the dead and canonized architecture, especially as manifested at the site of Lepenski Vir, fully conforms to this notion. Different aspects of bioarchaeological analysis – when evaluated concurrently – offer a counter-intuitive picture: at the time of its most complex development, the site of Lepenski Vir represented a focal point for a larger, more mobile hunter-gatherer group that identified with the site, its burials and its smaller resident population. The article explores the evidence provided by human skeletal remains and possible reasons behind these contradictory results.
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