Persistence and efficacy of three diatomaceous earth formulations against Sitophilus oryzae (Coleoptera: Curculionidae) on wheat and barley

dc.contributor.author	Athanassiou, CG	en
dc.contributor.author	Kavallieratos, NG	en
dc.contributor.author	Economou, LP	en
dc.contributor.author	Dimizas, CB	en
dc.contributor.author	Vayias, BJ	en
dc.contributor.author	Tomanovic, S	en
dc.contributor.author	Milutinovic, M	en
dc.date.accessioned	2014-06-06T06:46:37Z
dc.date.available	2014-06-06T06:46:37Z
dc.date.issued	2005	en
dc.identifier.issn	00220493	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3105
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-23844446489&partnerID=40&md5=09d347a1dcec410bb86aba0f0416f7a9	en
dc.subject	Barley	en
dc.subject	Diatomaceous earth	en
dc.subject	Insecticidal effect	en
dc.subject	Rice weevil	en
dc.subject	Wheat	en
dc.subject.other	infusorial earth	en
dc.subject.other	animal	en
dc.subject.other	article	en
dc.subject.other	barley	en
dc.subject.other	comparative study	en
dc.subject.other	insect control	en
dc.subject.other	methodology	en
dc.subject.other	parasitology	en
dc.subject.other	physiology	en
dc.subject.other	reproduction	en
dc.subject.other	weevil	en
dc.subject.other	wheat	en
dc.subject.other	Animals	en
dc.subject.other	Diatomaceous Earth	en
dc.subject.other	Hordeum	en
dc.subject.other	Insect Control	en
dc.subject.other	Reproduction	en
dc.subject.other	Triticum	en
dc.subject.other	Weevils	en
dc.subject.other	Coleoptera	en
dc.subject.other	Curculionidae	en
dc.subject.other	Hordeum vulgare subsp. vulgare	en
dc.subject.other	Sitophilus oryzae	en
dc.subject.other	Triticum aestivum	en
dc.title	Persistence and efficacy of three diatomaceous earth formulations against Sitophilus oryzae (Coleoptera: Curculionidae) on wheat and barley	en
heal.type	journalArticle	en
heal.publicationDate	2005	en
heal.abstract	The insecticidal and residual efficacy of three diatomaceous earth (DE) formulations, Insecto, PyriSec, and SilicoSec, against Sitophilus oryzae (L.) on barley and wheat was assessed. For this purpose, 4-kg lots of barley and wheat were treated with the above-mentioned DE formulations, in three dose rates (0.75, 1, and 1.5 g/kg grain) and stored at 26°C. Samples of these lots were taken at the day of storage, and every 45 d, until the completion of a 450-d period of storage. Bioassays were conducted by exposing S. oryzae adults to these samples, at 26°C and 57% RH. In these bioassays, the DE efficacy was evaluated by recording adult mortality after 24 h, 48 h, 7 d, and 14 d of exposure on the treated grains. After the 14-d count, all adults were removed, and the samples were left at the same conditions for an additional 45 d, to evaluate the capacity for progeny production in the treated grains. Adult mortality after 14 d of exposure was exponentially decreased with time. During the first 270 d of storage, mortality was >90%, and progeny production was <1 adult per sample, whereas after 270 d a gradual decrease in adult mortality occurred, with a resulting increase in progeny production. Generally, the three DE formulations tested were equally effective against S. oryzae adults. During the first 270 d of storage, the DE formulations were equally effective on both grains tested, but from 315 d of storage and on, S. oryzae mortality was higher on barley than on wheat. At this interval, progeny production was gradually increased, especially on grains treated with the lowest DE dose rate. However, even this rate caused a satisfactory level of mortality (>90% after 14 d of exposure) during the first 270 d of storage. © 2005 Entomological Society of America.	en
heal.journalName	Journal of Economic Entomology	en
dc.identifier.issue	4	en
dc.identifier.volume	98	en
dc.identifier.spage	1404	en
dc.identifier.epage	1412	en