Matches in SemOpenAlex for { <https://semopenalex.org/work/W989877885> ?p ?o ?g. }
Showing items 1 to 63 of
63
with 100 items per page.
- W989877885 abstract "The thesis investigates aphids and thrips in cereals - their biology, occurrence, economic damage, migration and control by integrated pest management. Experiments were carried out in all types of cereals in southern Sweden during the period 1978-2003. The main pest problem in these cereals is the aphid Sitobion avenae. It attacks wheat, the most valuable crop and the second in acreage. A crop loss model is presented based on average annual yield loss in field experiments in high yielding varieties. The most serious thrips pests are Limothrips cerealium and L. denticornis. Other thrips such as Haplothrips aculeatus, Stenothrips graminum, Thrips angusticeps and Frankliniella tenuicornis are minor pests not causing serious damage to cereals but occurring practically every year. Yield loss and economic injury levels were estimated for S. avenae, Rhopalosiphum padi, L. denticornis, L. cerealium and S. graminum. Grain quality parameters such as protein content, germination rate and mycotoxin concentrations in crops attacked by aphids and thrips were generally not decreased in a way that affected the price of the product. The compensation ability of cereals against aphids and thrips is considerable, probably because of the high number of tillers and the fact that the pests generally do not directly attack the grains. Warning and forecasting are essential within integrated pest management, and knowledge about the effect of weather on different pests is important, particularly in southern Sweden where several pests are on the northern limit of their geographical range. Weather is particularly important for L. cerealium and S. avenae. Investigations on the spatio-temporal dynamics of thrips in cereal crops during a single year revealed that many thrips species interact with acreage of the different cereals grown. The strong flyers, L. cerealium and L. denticornis, are specialised on cereals and their two generations provide the best possibilities to utilise different crops in the landscape. Populations of grain aphids were kept around a certain number, probably by natural predators, with aphid years followed by low populations, the so-called density dependence. Protection of these natural enemies through reduced application of pesticides in cereals might make the production more sustainable." @default.
- W989877885 created "2016-06-24" @default.
- W989877885 creator A5030913807 @default.
- W989877885 date "2005-01-01" @default.
- W989877885 modified "2023-09-23" @default.
- W989877885 title "Aphids and thrips" @default.
- W989877885 hasPublicationYear "2005" @default.
- W989877885 type Work @default.
- W989877885 sameAs 989877885 @default.
- W989877885 citedByCount "0" @default.
- W989877885 crossrefType "dissertation" @default.
- W989877885 hasAuthorship W989877885A5030913807 @default.
- W989877885 hasConcept C123963621 @default.
- W989877885 hasConcept C137580998 @default.
- W989877885 hasConcept C144027150 @default.
- W989877885 hasConcept C22508944 @default.
- W989877885 hasConcept C2775886748 @default.
- W989877885 hasConcept C2775976403 @default.
- W989877885 hasConcept C2776385806 @default.
- W989877885 hasConcept C2776988988 @default.
- W989877885 hasConcept C2778418478 @default.
- W989877885 hasConcept C2780467413 @default.
- W989877885 hasConcept C6557445 @default.
- W989877885 hasConcept C86803240 @default.
- W989877885 hasConceptScore W989877885C123963621 @default.
- W989877885 hasConceptScore W989877885C137580998 @default.
- W989877885 hasConceptScore W989877885C144027150 @default.
- W989877885 hasConceptScore W989877885C22508944 @default.
- W989877885 hasConceptScore W989877885C2775886748 @default.
- W989877885 hasConceptScore W989877885C2775976403 @default.
- W989877885 hasConceptScore W989877885C2776385806 @default.
- W989877885 hasConceptScore W989877885C2776988988 @default.
- W989877885 hasConceptScore W989877885C2778418478 @default.
- W989877885 hasConceptScore W989877885C2780467413 @default.
- W989877885 hasConceptScore W989877885C6557445 @default.
- W989877885 hasConceptScore W989877885C86803240 @default.
- W989877885 hasLocation W9898778851 @default.
- W989877885 hasOpenAccess W989877885 @default.
- W989877885 hasPrimaryLocation W9898778851 @default.
- W989877885 hasRelatedWork W147585682 @default.
- W989877885 hasRelatedWork W1514488380 @default.
- W989877885 hasRelatedWork W1966547241 @default.
- W989877885 hasRelatedWork W1975763785 @default.
- W989877885 hasRelatedWork W2003390256 @default.
- W989877885 hasRelatedWork W2043793466 @default.
- W989877885 hasRelatedWork W2119217048 @default.
- W989877885 hasRelatedWork W2143579745 @default.
- W989877885 hasRelatedWork W2148033691 @default.
- W989877885 hasRelatedWork W2248035909 @default.
- W989877885 hasRelatedWork W2320653487 @default.
- W989877885 hasRelatedWork W2347514306 @default.
- W989877885 hasRelatedWork W2982622082 @default.
- W989877885 hasRelatedWork W3158510098 @default.
- W989877885 hasRelatedWork W427720055 @default.
- W989877885 hasRelatedWork W813248964 @default.
- W989877885 hasRelatedWork W2111557433 @default.
- W989877885 hasRelatedWork W2473885396 @default.
- W989877885 hasRelatedWork W2515025739 @default.
- W989877885 hasRelatedWork W2557038021 @default.
- W989877885 isParatext "false" @default.
- W989877885 isRetracted "false" @default.
- W989877885 magId "989877885" @default.
- W989877885 workType "dissertation" @default.