Development and Life History of<i>Sitophilus zeamais</i>(Coleoptera: Curculionidae) on Cereal Crops

Ojo, James Adebayo; Omoloye, A. A.

doi:10.1155/2016/7836379

Cited by 34 publications

(30 citation statements)

References 21 publications

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“…Manakamana-1 variety of maize was used for insect rearing. Hundred pairs of one-week-old S. zeamais were introduced into 2 kg grains of maize in 6.5 kg capacity Kilner jars covered with mesh lids [21]. Infected maize cob was used for isolation of the fungus (A. section flavi).…”

Section: Mass Rearing Of Weevil Isolation and Culture Of Fungusmentioning

confidence: 99%

Role of Maize Weevil, Sitophilus zeamais Motsch. on Spread of Aspergillus section flavi in Different Nepalese Maize Varieties

Bhusal¹,

Khanal²

2019

Advances in Agriculture

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Experiments were conducted to find out the role of maize weevil, Sitophilus zeamais Motsch. on spread of green fungus, Aspergillus section flavi, in different varieties of stored maize in laboratory in 2016. Lab experiment was conducted to find the role of weevil on spread of A. flavus on five main varieties of maize grown at Nepal in split plot design, namely, Arun-2, Arun-4, Manakamana-1, Manakamana-3, and Rampur composite with three replications at NAST, Khumaltar, from August to September 2016. One hundred grams of each maize variety was exposed to weevil along with fungus and with fungus only to see the spread of the fungus under presence and absence of weevil. Among the tested five maize varieties, the lowest infestation was observed on Rampur Composite (14.99%) while it was the highest on Manakamana-3 (87.70%). The highest mean infestation (75.58%) was found under weevil released condition while it was lower (62.16%) under nonreleased condition. In presence of weevil, the infestation of the fungus increased and in their absence the infestation was low which signifies the role of weevil in fungal spread. All indices indicate that Rampur composite is the best variety among the five tested varieties in terms of storage under the presence of fungus and weevils. This study also indicates ample scope for further study on different varieties of maize under several storage conditions.

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Section: Mass Rearing Of Weevil Isolation and Culture Of Fungusmentioning

confidence: 99%

Role of Maize Weevil, Sitophilus zeamais Motsch. on Spread of Aspergillus section flavi in Different Nepalese Maize Varieties

Bhusal¹,

Khanal²

2019

Advances in Agriculture

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“…Plant materials have been applied to a commodity, usually at a rate of 1 to 5% (w/w) to protect stored grains from insect pest infestations (Dales, 1996). Laboratory and field evaluations of some botanical products in Africa indicate their effectiveness against insect pests of stored products (Ajayi, 2013;Rugumamu, 2014Rugumamu, , 2015Ojo and Omoloye, 2016;Suleiman et al, 2018b).…”

Section: Introductionmentioning

confidence: 99%

Entomocidal activity of some plant extracts against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)

Suleiman¹,

Sani²,

Yusuf³

et al. 2019

Afr. J. Agric. Res.

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Entomocidal activity of ethanolic leaf extracts of four plant species namely Euphorbia balsamifera Aiton, Lawsonia inermis L., Mitracarpus hirtus (L.) DC. and Senna obtusifolia L. were evaluated in order to assess their protectant ability to stored sorghum against Sitophilus zeamais Motsch. The botanicals were applied to 20 g of sorghum grains at the rate of 25, 50 and 100 mgml-1 , while no extracts was added to the control. Percentage repellency was recorded at 24 h after exposure (HAE) while adult mortalities of the weevils were obtained at 3 days after treatment (DAT). Adult emergence and grain perforations were recorded at 49 and 84 DAT, respectively. Repellency levels of the botanicals against S. zeamais ranged from 87.05 ± 0.45 to 100.00 ± 0.00%. Also, the ethanolic extracts resulted in high adult mortalities of the weevils in the treated sorghum grains. No adult emergence was recorded in grains treated with the botanical extracts. Highest (10.00 ± 2.04%) grain perforations among the treatments were observed in 25 mgml-1 of S. obtusifolia, while 2.50 ± 1.25% was the least in the highest concentration of E. balsamifera. Findings of the study have revealed that the selected botanicals could serve as stored sorghum protectants against S. zeamais infestations.

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“…The corn weevil, Sitophilus zeamais Motsch. 1855 (Coleoptera: Curculionidae), is one of the more important and severe pests of stored grains because in both stages, adult and larval, the insect feeds on grains and cause quantitative and qualitative losses to the stored products (OJO and OMOLOYE, 2016). In addition, S. zeamais is a "cross-infestation" insect (LORINI et al, 2015), which may contribute to its dispersion and increase its damages on stored products.…”

Section: Introductionmentioning

confidence: 99%

BIOACTIVITY OF Eucalyptus cv. “Urocam” ESSENTIAL OIL ON Sitophilus zeamais

Lazzaretti

Tramontin

Alves

et al. 2020

Acta

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Sitophilus zeamais is one of the more important and severe pests of stored grains. Its control is carried out predominantly by synthetic insecticides, a practice that must be rethought assuming the increasing demands for pesticide-free foods. This work aimed at evaluating the bioactivity of Eucalyptus cv. “Urocam” essential oil on 10- to 30-day-old S. zeamais. Essential oil from the leaves of Eucalyptus cv. “Urocam” was sprayed on corn kernels, infected by S. zeamais, at the rate dosage of 0.0; 1.0; 2.0; 3.0 and 5.0 L t-1. A completely randomized experimental design with five replicates was used to conduct the experiment. All data were analyzed by the F test and whenever a significant interaction was found, analysis of variance and regression tests were performed (Assistat 7.7 Beta software). The terpene with the highest concentration in the Eucalyptus cv. “Urocam” essential oil was Eucalyptol (74%). Based on our results, it can be inferred that Eucalyptus cv. “Urocam” essential oil presents a good potential of use in the dosages of 3.0 and 5.0 L t-1 of corn kernels due to the high mortality of S. zeamais within the first hours after application, reaching 100% by the end of the first 24 hours.

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Development and Life History ofSitophilus zeamais(Coleoptera: Curculionidae) on Cereal Crops

Cited by 34 publications

References 21 publications

Role of Maize Weevil, Sitophilus zeamais Motsch. on Spread of Aspergillus section flavi in Different Nepalese Maize Varieties

Role of Maize Weevil, Sitophilus zeamais Motsch. on Spread of Aspergillus section flavi in Different Nepalese Maize Varieties

Entomocidal activity of some plant extracts against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)

BIOACTIVITY OF Eucalyptus cv. “Urocam” ESSENTIAL OIL ON Sitophilus zeamais

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