Insecticidal efficacy of spinosad,Beauveria bassianaandMetarhizium anisopliaein combination with diatomaceous earth, for controllingSitophilus oryza(L.) (Coleoptera: Curculionidae) infesting stored wheat

2014 ◽  
Vol 49 (1) ◽  
pp. 117-127 ◽  
Author(s):  
Nour Zidan
Keyword(s):  
Diatomaceous Earth ◽  
Stored Wheat ◽  
Insecticidal Efficacy

scholarly journals Evaluation of a Greek Diatomaceous Earth for Stored Product Insect Control and Techniques That Maximize Its Insecticidal Efficacy

2020 ◽  
Vol 10 (18) ◽  
pp. 6441
Author(s):  
Georgia V. Baliota ◽  
Christos G. Athanassiou
Keyword(s):  
Diatomaceous Earth ◽  
Sitophilus Oryzae ◽  
Rhyzopertha Dominica ◽  
Insect Control ◽  
Stored Products ◽  
Cryptolestes Ferrugineus ◽  
Wide Range ◽  
Insecticidal Efficacy ◽  
Confused Flour Beetle ◽  
Laboratory Bioassays

Laboratory bioassays were conducted to evaluate the insecticidal efficacy of a diatomaceous earth deposit from Greece, for a wide range of stored product insects. In this context, populations of five different insect species, Tribolium confusum Jacquelin DuVal, the confused flour beetle; Sitophilus oryzae (L.), the rice weevil; Rhyzopertha dominica (F.), the lesser grain borer; Oryzaephilus surinamensis (L.), the sawtoothed grain beetle; Cryptolestes ferrugineus (Stephens), the rusty grain beetle, which cover a major spectrum of insects species of stored products worldwide, were used in the bioassays. The different treatment of diatomaceous earth (DE) rocks (grinding, diatomaceous enrichment, powder granulometry) led to the creation of five types of formulations (namely DE1, DE2, DE3, DE5 and DE6) that exhibited significant fluctuations in their insecticidal efficacy when applied on wheat. In general, some of the modified formulations were found to be very effective against species such as R. dominica and T. confusum that may be difficult to control at the current labeled doses of commercial DE formulations. Overall, our data clearly indicate that this specific Greek deposit has considerable insecticidal properties, which can be further utilized in designing commercial formulations for insect control at the postharvest stages of durable agricultural commodities, provided that the deposit will be modified at specific enrichment and granulometry levels.

scholarly journals Diatomaceous earth used against insect pests, applied alone or in combination with Metarhizium anisopliae and Beauveria bassiana

2014 ◽  
Vol 54 (1) ◽  
pp. 62-66 ◽  
Author(s):  
Yasaman Shafighi ◽  
Masumeh Ziaee ◽  
Yobert Ghosta
Keyword(s):  
Beauveria Bassiana ◽  
Tribolium Castaneum ◽  
Metarhizium Anisopliae ◽  
Diatomaceous Earth ◽  
Insect Pests ◽  
Rhyzopertha Dominica ◽  
Continuous Darkness ◽  
Resistant Species ◽  
Insecticidal Efficacy ◽  
Laboratory Bioassays

Abstract Laboratory bioassays were conducted to assess the insecticidal efficacy of the formulation SilicoSec® used alone or in combination with isolates of entomopathogenic fungi, Metarhizium anisopliae (Metschinkoff) Sorokin and Beauveria bassiana (Balsamo) Vuillemin. SilicoSec® is a commercial diatomaceous earth (DE) formulation. Wheat was treated with 200 mg/kg of DE, 400 mg/kg of each isolates alone or a combination of them, against Tribolium castaneum Herbst, Rhyzopertha dominica (F.), and Oryzaephilus surinamensis L. The experiments were carried out at 27±1°C and 65±5% relative humidity (RH) in continuous darkness. The pathogenicity of all isolates was significantly low even after 7 days of exposure, with the exception of R. dominica. The isolates were virulent to the beetles, but the efficacy of the isolates was enhanced in combination with the DE. Tribolium castaneum was the most resistant species, followed by R. dominica. The findings indicated that the addition of the DE to the isolates increased the pathogenicity especially at the highest exposure interval. The addition of DE may provide satisfactory control of the insect-pests of stored products.

Effect of Beauveria bassiana mixed with diatomaceous earth on mortality, mycosis and sporulation of Rhyzopertha dominica on stored wheat

2011 ◽  
Vol 39 (4) ◽  
pp. 325-331 ◽  
Author(s):  
Tahira Riasat ◽  
Waqas Wakil ◽  
Muhammad Ashfaq ◽  
Shahbaz Talib Sahi
Keyword(s):  
Beauveria Bassiana ◽  
Diatomaceous Earth ◽  
Rhyzopertha Dominica ◽  
Stored Wheat
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