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- Ekbom, Barbara
(författare)
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Betbladlus/Bönbladlus
- 2012
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Ingår i: Faktablad Om Växtskydd, Jordbruk. - 1100-5025.
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Annan publikation (populärvet., debatt m.m.)
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| 4. |
- Ekbom, Barbara
(författare)
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Betflugan
- 2012
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Ingår i: Faktablad Om Växtskydd, Jordbruk. - 1100-5025.
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Annan publikation (populärvet., debatt m.m.)
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| 5. |
- Ekbom, Barbara
(författare)
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Bönsmyg
- 2012
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Ingår i: Faktablad Om Växtskydd, Jordbruk. - 1100-5025.
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Annan publikation (populärvet., debatt m.m.)
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| 6. |
- Ekbom, Barbara
(författare)
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Can the IOMC revive the 'FAO Code' and take stake holder initiatives to the developing world?
- 2010
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Ingår i: Outlooks on Pest Management. - : Research Information Ltd.. - 1743-1026 .- 1465-8933 .- 1743-1034. ; 21, s. 125-131
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Over the years hundreds of different chemicals have been introduced as active substances in pesticide products on the international market. Several have become obsolete due to unacceptable health and environmental hazards or problems with resistance. Navigating the wide selection of pesticides is not a simple task and some non-governmental organizations provide information about the most unwanted in the form of 'blacklists'. For decades the principle of Integrated Pest Management (IPM) has been recommended for plant protection, but it is not a trivial task to determine what pesticides could be included in IPM programmes to avoid biological disruption. It is believed that the IOMC – the Inter-organization Programme for Sound Management of Chemicals – is the appropriate forum for provision of additional guidance and leadership with regard to choice of appropriate pesticides. A list of minimum-impact pesticides should be made easily accessible in several languages and a mechanism for updating this list should be developed. In addition, a multi-stakeholder re-evaluation of the International Code of Conduct should be initiated and it may be appropriate to propose a strengthening of the IPM focus of the Code and to include explicitly 'Responsible Care' and 'Product Stewardship' as integral parts of the pesticide industry's voluntary role. Countries without modern comprehensive pesticide legislation are those that would benefit the most from implementing the International Code of Conduct on the Distribution and Use of Pesticides. However, pesticide control issues currently may not be high on the political agenda. To pave the way for legislation or a generally accepted implementation of the Code it should be made easily available to a wide range of stakeholders in the Developing World.
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| 7. |
- Ekbom, Barbara, et al.
(författare)
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Consumption of flea beetles (Phyllotreta, Coleoptera: Chrysomelidae) by spiders in field habitats detected by molecular analysis
- 2014
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Ingår i: Canadian Entomologist. - : Cambridge University Press (CUP). - 0008-347X .- 1918-3240. ; 146, s. 639-651
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Tidskriftsartikel (refereegranskat)abstract
- Flea beetles, Phyllotreta Chevrolat (Coleoptera: Chrysomelidae) species, are often found in oilseed rape (OSR), Brassica napus Linnaeus (Brassicaceae). Among predators in the generalist predator complex present in agricultural fields, wolf spiders (Araneae: Lycosidae) are found on the ground and cobweb spiders (Araneae: Theridiidae) build webs in the foliage. We present group-specific primers developed for five flea beetle species within the genus Phyllotreta and study the incidence of predation of flea beetles by these spider groups using DNA-based gut-content analysis. Wolf spiders of the genus Pardosa Koch and the cobweb spider, Phylloneta impressa (Koch), were collected in three winter OSR fields. Flea beetle densities as well as the occurrence of predators and alternative prey were monitored. In total 19.4% of the collected Pardosa tested positive for flea beetle DNA in the polymerase chain reaction analyses, whereas 10% P. impressa were positive. Pardosa were more likely to be positive for flea beetle DNA when Pardosa activity density was low. Phylloneta impressa were more likely to be positive for flea beetle DNA if they were positive for pollen beetle DNA. Implications of these results for conservation biological control and future studies of food webs in OSR are discussed.
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| 8. |
- Ekbom, Barbara
(författare)
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Flea beetle (Phyllotreta undulata Kutschera) sensitivity to insecticides used in seed dressings and foliar sprays
- 2011
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Ingår i: Crop Protection. - : Elsevier BV. - 0261-2194 .- 1873-6904. ; 30, s. 1376-1379
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Tidskriftsartikel (refereegranskat)abstract
- Flea beetles of the genus Phyllotreta (Coleoptera: Chrysomelidae), which are severe pests in spring oilseed rape, have become increasingly difficult to control in some areas in Sweden. The current practice for plant protection is to use seed treatments followed by foliar applications of insecticide. Seed treatment with the single, currently registered neonicotinoid insecticide (active ingredient: imidacloprid) was compared to untreated controls and seed treatment with clothianidin using Phyllotreta undulata Kutschera beetles from 10 locations. Beetles from the overwintered generation and the new generation from the same 10 locations were used in bioassays to detect possible reduced sensitivity to the pyrethroid lambda-cyhalothrin. Seed treatment with clothianidin provided better protection for seedlings than imidacloprid. Highly variable results were obtained from the pyrethroid bioassays, but tests performed on beetles collected in August indicated that most sampled beetle populations are still susceptible to lambda-cyhalothrin. It is, however, important that the need for foliar applications is minimized to avoid insecticide resistance selection pressure. This requires seed treatments with adequate efficacy against flea beetles together with cultural control measures that can reduce flea beetle damage. (C) 2011 Elsevier Ltd. All rights reserved.
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| 10. |
- Ekbom, Barbara
(författare)
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Organic soil fertility amendments and tritrophic relationships on cabbage in Uganda: Experiences from on-station and on-farm trials
- 2010
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Ingår i: African Journal of Agricultural Research. - 1991-637X. ; 5, s. 2862-2867
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Tidskriftsartikel (refereegranskat)abstract
- Organic soil fertility amendments may have direct or indirect pest management properties through an impact on crop characters and/or the pest's natural enemies. This study was carried out to assess the effect of utilizing market crop wastes (MCW) as soil fertility amendments on tritrophic relationships of cabbage. The study was conducted on-station for three consecutive seasons; and was verified on-farm for one season. Treatments included 1) MCW compost incorporated in soil; 2) Un-composted MCW incorporated in soil; 3) Un-composted MCW on the soil surface; 4) a chemical fertilizer (NPK) incorporated in the soil; and 5) the un-amended control. The treatments were arranged in a randomized complete block design with three replications. The MCW were applied at a rate of 12 tonnes/ha. Data was collected on plant attributes, pest population dynamics of two pest guilds, natural enemies, and cabbage yield. Results indicated that MCW compost amended plants consistently had the highest aphids and diamondback moth infestations; the highest natural enemies' counts and the highest cabbage yield. Correlations revealed that the soil fertility amendments had effects that cascaded to different trophic levels.
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