Turkish Journal of Entomology (2017) 41, 347-354

Sait Ertürk, Ahmet Güray Ferizli and Mevlüt Emekci (2017)
Evaluation of diatomaceous earth formulations for the control of rice weevil, Sitophilus oryzae L., 1763 (Coleoptera: Curculionidae) in stored rice
Turkish Journal of Entomology 41 (3), 347-354
Abstract: A study was conducted between 2012 and 2014 on the protective efficacy of diatomaceous earth (DE) formulations against Sitophilus oryzae L., 1763 (Coleoptera: Curculionidae) (rice weevil), a major pest of the stored rice. Biological tests were carried out at 30° C and 75% RH on rice treated with DE formulations. In the biological tests, different concentrations of Protector® (DE formulation) and DEA-P [mixture of natural DE (83%) and 0.25% abamectin (w:w)] were used. After DE treatment, dead adults were counted once a week for a month and percentage mortalities were determined. In order to determine progeny production (F1), rice was also incubated under the same conditions for a 60-day period. Protector® gave 100% mortality to S. oryzae adults at 1000 ppm after 14 d, and DEAP gave the same mortality rate at 75 ppm at the same time. In studies to determine progeny (F1) emergence, Protector® resulted in 100% mortality at 1750 ppm after 60 d of storage, while DEA-P caused 100% mortality at 50 ppm concentration. In conclusion, the protective effect of both DE formulations was confirmed, however DEA-P was more effective against S. oryzae at lower concentrations than Protector®.
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Database assignments for author(s): Ahmet G Ferizli

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sitophilus oryzae	Stored grain
	Sitophilus oryzae	Rice (Oryza)