Opin vísindi

Effects of reduced water availability and insecticide on damage caused by cabbage root fly larvae

Show simple item record

dc.contributor Landbúnaðarháskóli Íslands
dc.contributor Agricultural University of Iceland
dc.contributor.author Baba, Abdul-Salam Mahamud
dc.contributor.author Barrio, Isabel C
dc.contributor.author Halldórsson, Guðmundur
dc.date.accessioned 2019-11-15T11:20:41Z
dc.date.available 2019-11-15T11:20:41Z
dc.date.issued 2019
dc.identifier.citation Baba, A. S. M., Barrio, I. C., & Halldórsson, G. (2019). Effects of reduced water availability and insecticide on damage caused by cabbage root fly larvae. Icelandic Agricultural Sciences, 32, 17-20.
dc.identifier.issn 2298-786X
dc.identifier.uri https://hdl.handle.net/20.500.11815/1338
dc.description.abstract The incidence of horticultural pests in combination with increased frequency of extreme weather events, like summer drought, can compromise crop production in Nordic agricultural systems during the already short summer growing season. In particular, rootfeeding insects can severely damage plants when combined with water deficits because root herbivores reduce plant water and nutrient uptake (Zvereva & Kozlov 2012). The cabbage root fly Delia radicum (L.) (Diptera: Anthomyiidae) is a major pest of cauliflower Brassica oleracea (L.) (Brassicales: Brassicaceae) crops in Iceland (Halldorsson 1989). Its larvae feed on roots of brassica plants, initially on root hairs and then by tunnelling into the taproot. Cabbage root flies overwinter as pupae in diapause in the soil around brassica plant roots (Bažok et al. 2012). In Iceland, adults emerge in June and females lay eggs between late June and early July (Halldorsson 1989). Eggs are laid on the soil surface around the base of the stems of brassica plants and are relatively resistant to desiccation (Lepage et al. 2012). In contrast, survival of first-instar larvae is compromised at low levels of soil moisture (Lepage et al. 2012). The aim of this study was to investigate the potential effects of reduced water supply on damage by cabbage root fly on cauliflower plants using a field experiment in Iceland. Specifically, we assessed the effect of reduced water supply on larval densities and on early-season growth of cauliflower plants. We expected reduced biomass production in plants that were not treated with insecticides; we hypothesized that this effect would be aggravated during periods of reduced water availability because the water deficit imposed by root damage would be stronger when combined with reduced water supply.
dc.format.extent 17-20
dc.language.iso en
dc.publisher Agricultural University of Iceland
dc.relation.ispartofseries Icelandic Agricultural Sciences;32(2019)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Grænmetisrækt
dc.subject Meindýr
dc.subject Cabbage root fly
dc.subject Vegetable production
dc.title Effects of reduced water availability and insecticide on damage caused by cabbage root fly larvae
dc.type info:eu-repo/semantics/article
dc.description.version Peer Reviewed
dc.identifier.journal Icelandic Agricultural Sciences
dc.identifier.doi 10.16886/IAS.2019.02
dc.relation.url http://ias.is/wp-content/uploads/2019/04/Effects-of-reduced-water-availability-and-insecticide-on-damage.pdf
dc.contributor.department Auðlinda- og umhverfisdeild (LBHÍ)
dc.contributor.department Faculty of Natural Resources and Environmental Sciences (AUI)

Files in this item

This item appears in the following Collection(s)

Show simple item record