Low-pressure treatment to control food-infesting pests (Tribolium castaneum, Sitophilus granarius) using a vacuum packing machine

Kučerová, Zuzana; Kýhos, Karel; Aulický, Radek; Stejskal, V.

doi:10.17221/154/2012-cjfs

Cited by 15 publications

(10 citation statements)

References 16 publications

(9 reference statements)

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“…Empty stores and mills can be fumigated with hydrogen cyanide (HCN), which is the only fumigant produced in the Czech Republic . Although research activities in this field have only been initiated (Aulicky et al 2012;Kucerova et al 2013), very limited storage techniques based on modified atmospheres (e.g. CO 2 , N 2 , O 2 absorbers, vacuum) are currently used by seed companies for seed protection in the CR in practice.…”

Section: Current Strategies and Methods To Control Pests Of Stored Sementioning

confidence: 99%

“…They found that 100% nitrogen caused 100% imago mortality after 33 h; LT 50 = 8.88 h. Zdarkova and Voracek (1993) estimated that mites from the family Acaridae were killed by a low pressure of 95 mm Hg after an exposure of 48 hours. Kucerova et al (2013Kucerova et al ( , 2014 used a vacuum packing machine for laboratory testing of the effectiveness of vacuum packaging on the mortality of 2 species of grain infesting beetle-pests (T. castaneum, S. granarius) at different temperatures and exposure times. There were significant differences between the adult insects of the tested species in their susceptibility to low pressure (vacuum): T. castaneum was approximately 10 times more susceptible to low pressure than S. granarius.…”

Section: Research On Seed Pest Controlmentioning

confidence: 99%

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Pest control strategies and damage potential of seed-infesting pests in the Czech stores - a review

2014

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Stejskal V., Aulický R., Kucerova Z. (2014): Pest control strategies and damage potential of seed-infesting pests in the Czech stores -a review. Plant Protect. Sci., 50: 165-173.This work reviews the historical and current pest risks and research concerning seed storage in the Czech Republic (CR). Stored seed pests (i.e. animals causing injuries to the germ and endosperm) represent a high risk of economic damage due to the high value of seeds coupled with long-term seed storage in small storage units (e.g., boxes, satchels). Rodents represent a significant risk to all types of seeds, especially seeds stored in piles or bags. Mites, psocids, and moths are the main pests of stored grass and vegetable seeds: mites can decrease seed germinability by 52% and psocids caused 9.7% seed weight loss in broken wheat kernels after 3 months of infestation under laboratory conditions. Although beetles (Sitophilus sp., Tribolium sp., Oryzaephilus sp.) and moths (Plodia sp.) are common pests of grain seeds (e.g., wheat, barley, maize), two serious seed pests, Sitotroga cereallela and S. zemays, are rare in the CR. Bruchus pisorum is a common pest of pea seeds, while other Bruchids are rare in the Czech legume seed stores. Currently, the control of seed pests is becoming difficult because the efficient pesticides (e.g., methylbromide, dichlorvos, drinking anticoagulant rodent baits) for seed protection have been lost without the development of adequate substitutes. New research on seed protection in the CR using biological control (mite predators Cheyletus sp.), low pressure, modified atmospheres, and hydrogen cyanide is overviewed.

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Section: Current Strategies and Methods To Control Pests Of Stored Sementioning

confidence: 99%

Section: Research On Seed Pest Controlmentioning

confidence: 99%

Pest control strategies and damage potential of seed-infesting pests in the Czech stores - a review

2014

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“…Insectresistant packaging is a cheap and efficient measure for the long-term control of pests that attack processed food products (Riudavets et al 2009;Kucerova et al 2013Kucerova et al , 2014Stejskal et al 2017). However, MAPs are employed for the protection of small quantities of commodities, mainly for overthe-counter food packages or small hermetic bags at farms.…”

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confidence: 99%

“…Large quantities of commodities (approximately 1 t or more) are usually protected in various types of MA/CA cocoons or bubbles (Finkelman et al 2003). Modern multilayer or composite packages liners (e.g., composite aluminium and polyethylene airtight film; Kucerova et al 2013) enable small packages and cocoons to be reasonably and cheaply transportable into a warm environment to enhance the efficacy of CA. From the technical and economic perspective, the most difficult MA/CA method is its application in silos or flat warehouses as the storage must be constructed to be gas-tight or requires permanent CA saturation.…”

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confidence: 99%

Field efficacy of brief exposure of adults of six storage pests to nitrogen-controlled atmospheres

Aulický¹,

Kolar²,

Plachý³

et al. 2017

Plant Prot. Sci.

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Aulicky R., Kolar V., Plachy J., Stejskal V. (2017): Field efficacy of brief exposure of adults of six storage pests to nitrogen-controlled atmospheres. Plant Protect. Sci., 53: 169-176.The efficacy of a brief exposure (1, 7, and 10 days) to a nitrogen-controlled atmosphere (N-CA) for major storage pests in a field validation study in the Czech Republic is reported. The main goal was to estimate how quickly the mobile adult stages of six species of storage beetles (oryzaephilus surinamensis, cryptolestes ferrugineus, tribolium confusum, tribolium castaneum, Sitophilus granarius, and Sitophilus oryzae) are killed after introduction of the infested commodity to prevent their further spread to the surrounding storage bins. The trials were conducted in a metal bin containing 25 t of seeds using the system of continual top-down nitrogen filling to replace the oxygen. The composition of N-CA in the silo was measured continually. The target N-CA concentration (i.e., ≤ 1% O 2 and 99% N 2 ) was reached at the bottom of the silo after 12 h of the purging phase of nitrogen silo filling. A one-day exposure to N-CA corresponds to top-down filling, which initially gives higher concentrations of N 2 in the upper than in the lower part of the silo: low efficacy was reached at the silo bottom (0-33.3%), while higher efficacy (16.7-100%) was reached at the top of the silo bin. The mortality variation at both locations was species dependent: the most sensitive was o. surinamensis, and the least sensitive were S. granarius and S. oryzae. Seven days of N-CA exposure led to 100% mortality of all tested species except for S. granarius (96.7% mortality at the bottom), while 10 days of N-CA exposure led to 100% mortality of all adults located at both the bottom and the top of the silo. This experiment showed that one day of exposure to N-CA caused significant mortality to reduce the spread of insects from the top of the silo but not from the silo bottom, and 10 days of exposure completely prevent the adult mobile pest stages of all tested species from spreading from the treated silo and causing cross-infestation in the storage facility.

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“…As noted by Ciesla and Ducom (2010), the pest control chemicals are becoming difficult to use in mills because many insecticides (i.e., methyl bromide) have been phased out as biocides in Europe. Promising alternatives, such as modified atmospheres and aerosols, are in minor use (Arthur 2012;Kucerova et al 2013Kucerova et al , 2014. However, fumigants are still key elements of the pest control in mills.…”

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confidence: 99%

Validation of hydrogen cyanide fumigation in flourmills to control the confused flour beetle

Aulický¹,

Stejskal²,

Dlouhý³

et al. 2015

Czech J. Food Sci.

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Aulicky R., Stejskal V., Dlouhy M., Liskova J. (2015): Validation of hydrogen cyanide fumigation in flourmills to control the confused flour beetle. Czech J. Food Sci., 33: 174-179.In the milling industry, the Tribolium confusum is hard to exterminate pest. We measured the concentration time product (Ct-P) achieved during the hydrogen cyanide (HCN) fumigation and examined whether the Ct-P levels in the explored Czech pilot mill were sufficient to control the field strain of T. confusum. Using an originally constructed, gastight fumigation chamber, it was estimated that the Ct-P required for the complete killing of the field strain of T. confusum was 4× higher (4.35 g/h/m 3 ) than the levels required to kill the laboratory strain (1.25 g/h/m 3 ). The Ct-P levels (ranging from 79 g/h/m 3 to 100 g/h/m 3 ) reached during the mill fumigations with HCN were less than half of the labelled HCN rate (240 g/h/m 3 ). Nevertheless, the current HCN dosage is still sufficient since the Ct-P reached during the mill fumigations was at least 99× higher than that required for the exterminating to the lab strain and 18× higher than that required for the field strain extermination. These results were confirmed in mill validation testing, where 100% mortality of T. confusum adults was achieved.

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Low-pressure treatment to control food-infesting pests (Tribolium castaneum, Sitophilus granarius) using a vacuum packing machine

Cited by 15 publications

References 16 publications

Pest control strategies and damage potential of seed-infesting pests in the Czech stores - a review

Pest control strategies and damage potential of seed-infesting pests in the Czech stores - a review

Field efficacy of brief exposure of adults of six storage pests to nitrogen-controlled atmospheres

Validation of hydrogen cyanide fumigation in flourmills to control the confused flour beetle

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