Effectiveness of grain storage facilities and protectants in controlling stored-maize insect pests in a climate-risk prone area of Shire Valley, Southern Malawi

Singano, Charles; Mvumi, Brighton M.; Stathers, T.

doi:10.1016/j.jspr.2019.06.007

Cited by 25 publications

(28 citation statements)

References 30 publications

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“…The increase in insect populations and damages to grain stored in ZeroFly ® and control woven bags observed here corroborates findings of previous studies in which maize was stored in several different countries in sub-Saharan Africa [ 19 , 25 , 27 , 28 , 29 ]. The present study further confirmed that C. maculatus is the only insect species that attacks cowpea during storage in West Africa.…”

Section: Discussionsupporting

confidence: 91%

“…A comparable number of abrasions and perforations observed on the single liners of AgroZ ® , SuperGrainbag TM , EVAL™ bags, and the inner liner of the PICS TM bag have been reported by other studies [ 15 , 19 , 26 , 29 ]. A recent study from Zimbabwe reported similar findings and also noted insects making holes on the single liner of the ZeroFly ® hermetic bag [ 30 ].…”

Section: Discussionsupporting

confidence: 83%

“…Our results are corroborated by findings from other studies on maize in several regions of sub-Saharan Africa. These studies showed weigh losses ranging from 3% to 35% [ 19 , 20 , 22 , 25 , 27 , 28 , 29 ]. Our results contradict laboratory studies conducted in both Ghana and Nigeria that claimed 100% insect mortality and no weight loss of cowpea stored in 5 and 10 kg ZeroFly ® storage bags for 21 to 25 days [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

“…Wide dissemination of PICS TM bags led to the development and commercialization of several alternative hermetic bags as well as other storage technologies in sub-Saharan Africa, especially in East and Southern Africa [ 18 ]. In addition to PICS TM bags, other storage technologies that have been tested for maize storage in sub-Saharan Africa include SuperGrainbag TM , AgroZ ® , EVAL™, and ZeroFly ® bags [ 15 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ]. These studies have provided evidence that hermetic bags are effective at protecting grain during storage, while the ZeroFly ® bag has limited success.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of Cowpea Storage Technologies in the Sahel Region of Niger

Bakoye

Baoua

Seyni

et al. 2020

Insects

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Cowpea stored on smallholders’ farms suffers serious losses to insect pests. A study conducted in Niger compared five postharvest technologies marketed in sub-Saharan Africa to protect stored grain. Naturally-infested cowpea stored for eight months showed adult Callosobruchus maculatus (F.) mortality of 97% to 100% in the hermetic bags (PICSTM, SuperGrainbagTM, AgroZ®, EVAL™, and ZeroFly® bags). There was no change in grain damage and weight loss of cowpea stored in hermetic bags. There was, however, a loss of up to 10 to 16% in germination when the grain was stored in hermetic bags. Results observed for grain stored in ZeroFly® bags impregnated with deltamethrin were substantial and similar to those in control woven bags. In both ZeroFly® and woven bags, (1) adult C. maculatus population augmented by 35.7% and 78.6%, (2) increased weight losses of 27.3% and 25.2%, and (3) reduced germination of 37.0% and 28.8%, respectively. After opening the bags, abrasions were noted on the liners of hermetic bags, potential damage that could limit their reuse if they only have a single liner. Smallholder farmers in the Sahel can safely store their cowpea in all the hermetic bags tested. However, further research is needed to mitigate insect damage on liners of hermetic bags to improve their performance and reusability.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Study of Cowpea Storage Technologies in the Sahel Region of Niger

Bakoye

Baoua

Seyni

et al. 2020

Insects

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“…In addition, Kuraray Co. Ltd. (Osaka, Japan) began exploring markets for its EVAL™ bags in the African market. Several studies have been conducted to assess the efficacy of different hermetic bags for storage of grains in different countries and regions of the world [ 18 , 24 , 25 , 26 , 27 , 28 , 29 ]. Limited studies have looked at comparing the different hermetic bags available in sub-Saharan Africa.…”

Section: Introductionmentioning

confidence: 99%

Performance of Five Postharvest Storage Methods for Maize Preservation in Northern Benin

Baributsa

Bakoye

Baoua

et al. 2020

Insects

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Several postharvest technologies are currently being commercialized to help smallholder farmers in sub-Saharan Africa reduce grain storage losses. We carried out a study in Northern Benin to compare the effectiveness of five technologies being sold to protect stored grain. Maize that had been naturally infested by insects was stored in four hermetic storage technologies (SuperGrainbag™, AgroZ® bag, EVAL™, and Purdue Improved Crop Storage-PICS™ bags), an insecticide impregnated bag (ZeroFly®), and a regular polypropylene (PP) woven bag as control. Oxygen levels in hermetic bags fluctuated between 0.5 ± 0.0 (v/v) and 1.0 ± 0.3 (v/v) percent during the seven months of storage. No weight loss or insect damage was observed in grain stored in any of the hermetic storage bags after seven months. However, grain stored in ZeroFly® and PP woven bags had weight losses of 6.3% and 10.3%, respectively. These results will help farmers and development agencies when making decisions to use and/or promote storage technologies to reduce postharvest grain losses.

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Effectiveness of high‐density polyethylene container and Super Grain Bag for the storage system of cowpea grain for smallholder farmers

et al. 2020

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The present study aims to evaluate the effectiveness of high‐density polyethylene container combined or not with Super Grain Bag for cowpea grain storage. The experiments were conducted on‐station and on‐farm. The storage systems tested included high‐density polyethylene container (PC), Super Grain Bag (SGB), and polypropylene bag (PB). The insect infestation level and grain damage were determined monthly for 6 months at on‐station and every 2 months for 8 months at on‐farm trials. Acceptability test of the stored grain was carried out at the end of on‐station trials with farmers. Naturally infested grain was used, with an initial infestation level of 117 insects/kg and a percentage of damaged grain of 27%. After 6 months of storage on‐station, PB resulted in an increase of insect infestation to above 1300 insects/kg of cowpea grain and an increase of damaged grain to 79%. In the SGB and PC, the number of insects increased to 573 and 364 insects/kg, while the grain damage increased to 40% and 36%, respectively. After 4 months of storage the SGB was perforated by insects, compromising its hermeticity. The combination of PC with SGB (PC + SGB) reduced the proliferation of insects and grain damage, resulting in 257 insects/kg and 34%, respectively. The farmers highly accepted grain stored at PC and PC + SGB systems. The on‐farm trials confirmed the effectiveness of the polyethylene container on limiting insects multiplication and grain damage. Thus, the polyethylene container, associated or not with Super Grain Bag, showed to be effective for storage and preservation of cowpea grain, making it suitable for smallholder farmers, thereby reducing cowpea grain losses during storage.

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Effectiveness of grain storage facilities and protectants in controlling stored-maize insect pests in a climate-risk prone area of Shire Valley, Southern Malawi

Cited by 25 publications

References 30 publications

Comparative Study of Cowpea Storage Technologies in the Sahel Region of Niger

Comparative Study of Cowpea Storage Technologies in the Sahel Region of Niger

Performance of Five Postharvest Storage Methods for Maize Preservation in Northern Benin

Effectiveness of high‐density polyethylene container and Super Grain Bag for the storage system of cowpea grain for smallholder farmers

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