Penetration of Sitophilus zeamais (Coleoptera: Curculionidae) through diatomaceous earth-treated bulk maize grain

Penetration of Sitophilus zeamais (Coleoptera: Curculionidae) through diatomaceous earth-treated bulk maize grain

The penetration of adult Sitophilus zeamais Motschulsky through maize grain bulks (0.75 m deep), treated with Protect-It®, a diatomaceous earth (DE) at 0, 0.05, 0.1 and 0.2% (w/w), was determined 12 weeks after weevils were released at the upper surface of the grain. Maize was stored in columns in p...

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Veröffentlicht in:International journal of tropical insect science 2006-03, Vol.26 (1), p.28-34
Hauptverfasser: Mvumi, B.M., Stathers, T.E., Golob, P., Giga, D.P.
Format: Artikel
Sprache:eng
Schlagworte:
bulk maize
Corn
Curculionidae
Diatomaceous earth
grain protectant
Insects
Polyvinyl chloride
Sitophilus zeamais
vertical insect movement
Zea mays
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Zusammenfassung:The penetration of adult Sitophilus zeamais Motschulsky through maize grain bulks (0.75 m deep), treated with Protect-It®, a diatomaceous earth (DE) at 0, 0.05, 0.1 and 0.2% (w/w), was determined 12 weeks after weevils were released at the upper surface of the grain. Maize was stored in columns in polyvinyl chloride (PVC) pipes, under controlled conditions of 26±2°C and 70±10% RH. Grain samples were collected from various pre-determined depths and the numbers of S. zeamais adults counted. Differences in insect numbers between treatments and at different depths from which samples were collected were highly significant (P
ISSN:1742-7584
1742-7592
DOI:10.1079/IJT200694