Death by desiccation: Effects of hermetic storage on cowpea bruchids

Murdock, Larry L.; Margam, Venu M.; Baoua, Ibrahim; Balfe, Susan; Shade, Richard E.

doi:10.1016/j.jspr.2012.01.002

Cited by 184 publications

(164 citation statements)

References 5 publications

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“…This could be attributed to slowed insect feeding activity when O 2 level in the sealed metal silos fell below the normal level (21%) in comparison with the control. Murdock et al (2012), in their study observed slowed insect feeding activity when oxygen fell below ambient level and completely ceased when oxygen fell to 1-4% in PICS bags. In this study, grain damage was relatively higher than normal phenomena that could be explained by the fact that this maize was bought from different farmers who handled their grain differently and hence some had high numbers of damaged kernels including broken kernels.…”

Section: Discussionmentioning

confidence: 81%

“…Calderon and Navarro (1980), and Murdock et al (2012) reported metabolic activities of the insects, microorganisms and grain respiration in hermetic storage utilize oxygen and increase carbon dioxide production leading to insect mortality due to desiccation. In this study, production of CO 2 in the metal silos was because of using lighted candle inside the metal silos in combination with metabolic activities of the insect and grain respiration.…”

Section: Discussionmentioning

confidence: 99%

“…This may be attributed to high CO 2 and low O 2 level which slowed down insect feeding in metal silos with lighted candle compared to the metal silos without candle and the polypropylene bags. Murdock et al (2012) reported that insect feeding was slowed down when oxygen fallen below ambient level and the insects practically ceased feeding when it fell to 1-4%. Although in this study oxygen and carbon dioxide levels did not reach those reported by Murdock et al (2012) in PICS bags, damage by insects in the metal silos was lower compared to the control (polypropylene bag).…”

Section: Discussionmentioning

confidence: 99%

“…Murdock et al (2012) reported that insect feeding was slowed down when oxygen fallen below ambient level and the insects practically ceased feeding when it fell to 1-4%. Although in this study oxygen and carbon dioxide levels did not reach those reported by Murdock et al (2012) in PICS bags, damage by insects in the metal silos was lower compared to the control (polypropylene bag). Grain volume and use of lighted candle in the metal silos affected LGB insects and hence the level of grain damage.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Sealing Method and Lighting Candle in Metal Silos on Survival of the Larger Grain Borer, Prostephanus Truncatus, in Stored Maize

Anne¹,

Tefera²,

Florence³

et al. 2018

JAS

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The aim of this study was to determine the effect of sealing methods, grain volume and lighting candle in metal silo for the control of Prostephanus truncatus in stored maize. Metal silos with 100 kilograms holding capacity were loaded with 90 kilograms of grain, in-let and out-let were covered with lids and sealed either with rubber band, grease, rubber band combined with grease and lid without sealing (control). The control suffered highest grain damage of 6.6% and weight loss of 1.9% compared to metal silo sealed using rubber band combined with grease which had grain damage 4.5% and weight loss 0.6%, thirty-five days after storage. Metal silo sealed with rubber band combined with grease had significantly higher CO 2 level of 2.1% v/v than the control 0.5% v/v. In a separate experiment, metal silos with: 90 kilograms of grain, with and without lighted candle; 45 kilograms of grain, with and without lighted candle and a polypropylene bag with 90 kilograms of grain were compared. Ninety days after storage, grain stored in all metal silos regardless of grain volume and candle lighting suffered the least weight loss 0.2% to 1.1%, and damage 4.1% to 10.5% compared to grain in polypropylene bags which had the highest loss 7.3% to 25.3% and damage, 28.9% to 37.5%. All metal silos irrespective of grain volume and candle lighting during storage had 100% insect mortality while in control the number of live P. truncatus increased from 100 to 1786, ninety days after storage. Proper sealing of metal silo with either rubber band or grease and use of lighted candle effectively controlled P. truncatus in stored maize irrespective of grain volume.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effect of Sealing Method and Lighting Candle in Metal Silos on Survival of the Larger Grain Borer, Prostephanus Truncatus, in Stored Maize

Anne¹,

Tefera²,

Florence³

et al. 2018

JAS

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“…The action of the BPBs and WPBs could be compared to what happens when grains are stored in the Purdue Improved Cowpea Storage (PICS) bags [32]. Sealed PICS bags work, as do other hermetic storage containers, by excluding oxygen and raising the temperature of stored grains [54,55].…”

Section: Discussionmentioning

confidence: 99%

Impregnating Storage Materials with Neem Seed Oil against Callosobruchus maculatus Fabricus (Coleoptera: Chrysomelidae: Bruchinae) in Stored Bambara Seeds (Vigna subterranean L.) Verdcourt

Ojiako

Zakka

Dialoke

et al. 2016

ILNS

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Neem (Azadirachta indica A. Juss.) seed oil (NSO) is acclaimed to have some form of insecticidal action against more than 400 insect species in at least 10 to 13 orders. The main delimitating factor in the wide acceptance of this well tested plant as a storage pest bioinsecticide is its foul sulfurous smell and bitter taste which impinges on the acceptability and marketability of treated produce. To ameliorate this shortfall, therefore, an assessment of the potential of impregnating different storage materials; [plastic containers (PLC), Bagco bags (BCB), Black polyethylene bags (BPB), white polyethylene bags (WPB) and calico bags (CAB)], with NSO in the management of Callosobruchus maculatus (F.) in stored Bambara seeds (Vigna subterranea L.), was conducted in the laboratory. The experiment was laid out in a 4 x 5 factorial arrangement fitted into a completely randomized design (CRD). Factor A represented four concentrations of NSO (0.00, 0.50, 1.00, 1.50 ml/ 100g seed), while factor B were the five different storage materials. The treatments were replicated four times Generally, seeds stored with impregnated storage materials recorded more bruchids mortality, reduced oviposition rate, decreased number of emerged insects (F 1 and F 2 ) and had less damaged seeds (and hence decreased weevil perforation index, WPI) than the control. Concentration performance was dose related though the highest (1.50 %) did not differ statistically (P=0.05) from the medium (1.00 %) concentration. Seeds stored in BPBs had the highest mortalities, but recorded the lowest in number of eggs oviposited, egg/seed ratio, F 1 , F 2 and cumulative emergence, respectively. These results differed significantly (P=0.05) with the seeds stored in other materials. BPB stored seeds were also the least damaged with lowest exit holes/seed, seeds with holes and WPI, respectively. The performance of BPB was closely followed by seeds stored in WPBs in all the parameters tested. Conversely, seeds stored in BCBs recorded the lowest mortalities but the highest in all other parameters assessed. Other storage materials (PLC and CAB) had better storage quality than BCB materials. Impregnation of storage materials with NSO could be a better option to direct seed application with its attendant drawback. The use of NSO impregnated black polyethylene bags, within the scope of the storage materials screened, to control damage by C. maculatus in stored Bambara seeds, should be encouraged.

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Comparative utility of hermetic and conventional grain storage bags for smallholder farmers: a meta‐analysis

Ngoma,

Monjerezi,

Leslie

et al. 2023

J Sci Food Agric

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Postharvest management is critical to attaining household food, nutrition, and income security. Hermetic grain storage bags offer an effective pesticide‐free way to protect stored grain against fungal and insect infestation. We evaluated articles indexed in the Web of Science that included experiments comparing the storage efficacy of conventional and hermetic storage bags based on grain germination rate, insect infestation, physical damage, mycotoxin contamination, and changes in weight and moisture content. Compared with grain stored in hermetic bags, grain stored in conventional bags lost 3.6‐fold more seed viability, contained 42‐fold more insects, had 11‐fold more physical damage, and lost 23‐fold more grain weight, while grain moisture levels were similar for both hermetic and conventional storage bags. Mycotoxin contamination levels were not as frequently assessed. Levels could be low in grain stored in both types of bags, or levels could be low in hermetic bags and significantly higher in conventional bags. The improved properties of grain stored in hermetic bags can increase food security and household income by providing safe storage options for maintaining seed germinability, and for consumption and/or sale when food supplies are high, or when prices are low. Hermetic bags are economically feasible for use by subsistence farmers in Sub‐Saharan Africa for grain for household consumption and for carrying‐over seed for planting in the next season. Additional studies are needed to verify the mycotoxin contamination results and to determine if there are differences in functional food characteristics, e.g. flavor and cooking properties, that have not been as comprehensively studied. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Death by desiccation: Effects of hermetic storage on cowpea bruchids

Cited by 184 publications

References 5 publications

Effect of Sealing Method and Lighting Candle in Metal Silos on Survival of the Larger Grain Borer, Prostephanus Truncatus, in Stored Maize

Effect of Sealing Method and Lighting Candle in Metal Silos on Survival of the Larger Grain Borer, Prostephanus Truncatus, in Stored Maize

Impregnating Storage Materials with Neem Seed Oil against <i>Callosobruchus ma</i><i>culatus</i> Fabricus (Coleoptera: Chrysomelidae: Bruchinae) in Stored Bambara Seeds (<i>Vigna subterranean</i> L.) Verdcourt

Comparative utility of hermetic and conventional grain storage bags for smallholder farmers: a meta‐analysis

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