Persistence and Efficacy of Four Iranian Diatomaceous Earths Against Three Stored Grains Beetles

Persistence and Efficacy of Four Iranian Diatomaceous Earths Against Three Stored Grains Beetles Persistence and efficacy of four Iranian diatomaceous earth formulations was assessed against Sitophilus oryzae (L.), Tribolium castaneum (Herbst) and Tribolium confusum Jacquelin du Val. on barley, rice and wheat. Three diatomaceous earth samples were collected from Maragheh, Mamaghan, and Khorasan Jonoobi mines and Sayan® formulation was obtained from Kimia Sabz Avar Company. Mortality of the exposed individuals was recorded after 2, 5, 10 and 14 days of exposure. The mortality of all tested species was higher on wheat followed by barley. The insect mortality increased with increasing concentration level. In most cases, Khorasan was the most effective diatomaceous earth deposit. LC50 values of Khorasan deposit was 155.3, 201.5 and 293.7 ppm for S. oryzae, T. castaneum and T. confusum, respectively when exposed for 7 days on treated wheat. Adults of S. oryzae were the most susceptible species to diatomaceous earths. Subsequently, the persistence of diatomaceous earths was assessed after 1, 2, 3, 4, 6 and 8 months of storage. Mortality of all the tested species was high in first four months of storage but decreased rapidly overtime. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Proceedings of the National Academy of Sciences, India Section B: Biological Sciences Springer Journals

Persistence and Efficacy of Four Iranian Diatomaceous Earths Against Three Stored Grains Beetles

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Publisher
Springer Journals
Copyright
Copyright © 2016 by The National Academy of Sciences, India
Subject
Life Sciences; Life Sciences, general; Behavioral Sciences; Plant Biochemistry; Nucleic Acid Chemistry
ISSN
0369-8211
eISSN
2250-1746
D.O.I.
10.1007/s40011-016-0774-3
Publisher site
See Article on Publisher Site

Abstract

Persistence and efficacy of four Iranian diatomaceous earth formulations was assessed against Sitophilus oryzae (L.), Tribolium castaneum (Herbst) and Tribolium confusum Jacquelin du Val. on barley, rice and wheat. Three diatomaceous earth samples were collected from Maragheh, Mamaghan, and Khorasan Jonoobi mines and Sayan® formulation was obtained from Kimia Sabz Avar Company. Mortality of the exposed individuals was recorded after 2, 5, 10 and 14 days of exposure. The mortality of all tested species was higher on wheat followed by barley. The insect mortality increased with increasing concentration level. In most cases, Khorasan was the most effective diatomaceous earth deposit. LC50 values of Khorasan deposit was 155.3, 201.5 and 293.7 ppm for S. oryzae, T. castaneum and T. confusum, respectively when exposed for 7 days on treated wheat. Adults of S. oryzae were the most susceptible species to diatomaceous earths. Subsequently, the persistence of diatomaceous earths was assessed after 1, 2, 3, 4, 6 and 8 months of storage. Mortality of all the tested species was high in first four months of storage but decreased rapidly overtime.

Journal

Proceedings of the National Academy of Sciences, India Section B: Biological SciencesSpringer Journals

Published: Jul 27, 2016

References

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