Physicochemical mechanisms for the removal of insect wax by means of finely divided powders

Ebeling, Walter

doi:10.3733/hilg.v30n18p531

Cited by 61 publications

(55 citation statements)

References 43 publications

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“…Ebeling (1961), through a series of elegant experiments, has shown that absorption of the epicuticular layers, and to a lesser degree abrasion, was responsible for the desiccating effect of the inert dusts. Ebeling (1961) has shown that the inert dust, silica aerogel or SG-67, absorbs bees wax films from glass slides within 1 hour after contact at 22°e. The greyish color of the silica gel changed to white after wax absorption.…”

Section: Proposed Modes Of Actionmentioning

confidence: 99%

“…The pore size should be greater than 20 Angstroms for increased oil absorption (Ebeling 1961). Addition of ammonium fluosilicate (2-4.5% by weight) to silica gels reduces their tendency to disperse, increases adherence to treated surfaces because of a positive charge, and increases insecticidal potency.…”

Section: Synthetic Silicasmentioning

confidence: 99%

“…Also, the rate of water loss through cuticle of a given insect/mite species varies with temperature (Edney 1977). Ebeling (1961) concluded that the insecticidal efficacy of inert dusts primarily depends on the pore size (>20 Angstroms), large specific surface area, and the oil absorption capability. Figure 4 shows the removal of cuticular lipids of S. oryzae adults by a DE dust, Insecto.…”

Section: Proposed Modes Of Actionmentioning

confidence: 99%

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Inert Dusts

Subramanyam¹,

Roesli²

2000

Alternatives to Pesticides in Stored-Product IPM

169

143

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Section: Proposed Modes Of Actionmentioning

confidence: 99%

Section: Synthetic Silicasmentioning

confidence: 99%

Section: Proposed Modes Of Actionmentioning

confidence: 99%

See 1 more Smart Citation

Inert Dusts

Subramanyam¹,

Roesli²

2000

Alternatives to Pesticides in Stored-Product IPM

169

143

View full text Add to dashboard Cite

“…Following this publication, there have been several reviews and research papers on the subject since (Ebeling and Wagner, 1961;Ebeling, 1961Ebeling, , 1971Fields and Muir, 1996;Golob, 1997;Korunic, 1998Korunic, , 2013Quarles, 1992 Malia et al, 2016). Inert dusts are non-toxic dry powders of different origins that are chemically unreactive in nature.…”

Section: Introductionmentioning

confidence: 99%

LABORATORY TESTS ON INSECTICIDAL EFFECTIVENESS OF DISODIUM OCTABORATE TETRAHYDRATE, DIATOMACEOUS EARTH AND AMORPHOUS SILICA GEL AGAINST Sitophilus oryzae (L.) AND THEIR EFFECT ON WHEAT BULK DENSITY

Korunić¹,

Rozman

Liška

et al. 2017

Poljoprivreda

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Laboratory tests on insecticidal effectiveness of disodium octaborate tetrahydrate, diatomaceous earth and amorphous silica gel against Sitophilus oryzae (L.) and their effect on wheat bulk densityLaboratorijska testiranja insekticidne učinkovitosti dinatrijevog oktaborat tetrahidrata, dijatomejske zemlje i amorfnoga silika gela na Sitophilus oryzae (L.) te njihov utjecaj na hektolitarsku masu pšenice Korunić, Z., Rozman, V., Liška, A., Lucić, P. Original scientific paper Izvorni znanstveni članak SUMMARY We examined insecticide effectiveness of three different inert dusts: disodium octaborate tetrahydrate (DOT) and diatomaceous earth (DE) Celatom ® Mn 51 applied as powder and suspension, and silica gel Sipernat® 50 S applied as powder against Sitophilus oryzae (L.) and their reduction of grain bulk density. Sipernat ® 50 S was the most effective dust with a very fast initial effectiveness. DE and DOT generated similar effectiveness against S. oryzae. DOT generated low initial effectiveness but after prolonged exposure time of 8 and especially after 21 days, the mortality was very high (100%), similar to the effectiveness of DE. The similar order of dusts was obtained in the reduction of wheat bulk density. Applied at dose of 200 and 500 ppm, the lowest bulk density difference in regard to bulk density of untreated wheat had DOT (-1.1 and -1.9 kg hl -1 , respectively), followed by Celatom ® Mn 51 (-3.5 and -4.3 kg hl -1 , respectively) and Sipernat ® 50 S (-5.2 and -5.5 kg hl -1 , respectively). Due to the effect on wheat bulk density DOT belongs to the group with the least negative effect on bulk density and therefore, it is a promising dust to control stored grain insect pests.

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“…DE is composed of fossilized remains of phytoplanktons (diatoms) (Korunic 1998). DEs have a physical mode of insecticidal action, because they "inactivate" the epicuticular lipids of the insects' cuticle and insects die due to water loss and desiccation (Ebeling 1961(Ebeling , 1971Korunic 1998;Subramanyam & Roesli 2000). DEs have low mammalian toxicity and, as inert materials, can provide long-term protection against stored product insects (Athanassiou et al 2005a;Vayias et al 2006c).…”

Section: Influence Of Temperature On Susceptibility Ofmentioning

confidence: 99%