Influence of instar and commodity on insecticidal effect of two diatomaceous earth formulations against larvae of Ephestia kuehniella (Lepidoptera: Pyralidae)

dc.contributor.author	Athanassiou, CG	en
dc.date.accessioned	2014-06-06T06:47:07Z
dc.date.available	2014-06-06T06:47:07Z
dc.date.issued	2006	en
dc.identifier.issn	00220493	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3403
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33845276241&partnerID=40&md5=60f23aa23dfcd3e3c384a5fb438a6493	en
dc.subject	Barley	en
dc.subject	Diatomaceous earth	en
dc.subject	Ephestia kuehniella	en
dc.subject	Rye	en
dc.subject	Wheat	en
dc.subject.other	infusorial earth	en
dc.subject.other	insecticide	en
dc.subject.other	animal	en
dc.subject.other	article	en
dc.subject.other	comparative study	en
dc.subject.other	food control	en
dc.subject.other	larva	en
dc.subject.other	life cycle	en
dc.subject.other	moth	en
dc.subject.other	parasitology	en
dc.subject.other	Poaceae	en
dc.subject.other	Animals	en
dc.subject.other	Diatomaceous Earth	en
dc.subject.other	Food Parasitology	en
dc.subject.other	Insecticides	en
dc.subject.other	Larva	en
dc.subject.other	Life Cycle Stages	en
dc.subject.other	Moths	en
dc.subject.other	Poaceae	en
dc.subject.other	Anagasta kuehniella	en
dc.subject.other	Hordeum vulgare	en
dc.subject.other	Hordeum vulgare subsp. vulgare	en
dc.subject.other	Lepidoptera	en
dc.subject.other	Pyralidae	en
dc.subject.other	Secale cereale	en
dc.subject.other	Triticum aestivum	en
dc.subject.other	Triticum sp.	en
dc.title	Influence of instar and commodity on insecticidal effect of two diatomaceous earth formulations against larvae of Ephestia kuehniella (Lepidoptera: Pyralidae)	en
heal.type	journalArticle	en
heal.publicationDate	2006	en
heal.abstract	Laboratory experiments were carried out to evaluate the insecticidal effect of two diatomaceous earth (DE) formulations, SilicoSec and PyriSec, against larvae of Ephestia kuehniella Zeller (Lepidoptera: Pyralidae). Three instars were tested: first, third and fifth. The test was conducted in six commodities: barley Hordeum vulgare (L.) (Gramminae), rye Secale cereale L. (Gramminae), wheat Triticum sp. (Gramminae), wheat + 10% cracked wheat, wheat + 30% cracked wheat, and wheat flour. Quantities of these commodities were treated with the DEs at three dose rates: 250, 500, and 1000 ppm. Mortality of the exposed larvae on the DE-treated commodities was measured after 7 d of exposure. For both Des, mortality increased with dose, but this increase was lower when dose was increased from 500 to 1,000 ppm. The type of the commodity significantly affected DE effectiveness. Both DEs were equally effective on barley, rye, and wheat, whereas the presence of cracked wheat reduced larval mortality. In addition, significantly fewer larvae were dead on treated flour compared with the other five commodities. The increase of larval age significantly affected DE effectiveness. First instars were very susceptible to both DEs, and mortality with 1,000 ppm exceeded 86%. In contrast, fifth instar were the least susceptible to DEs, because mortality with 1000 ppm was <22%. © 2006 Entomological Society of America.	en
heal.journalName	Journal of Economic Entomology	en
dc.identifier.issue	5	en
dc.identifier.volume	99	en
dc.identifier.spage	1905	en
dc.identifier.epage	1911	en