Fumigant toxicity of essential oil from Vitex pseudo-negundo against Tribolium castaneum (Herbst) and Sitophilus oryzae (L.)

Sahaf, Bibi Zahra; Moharramipour, Saeid; Meshkatalsadat, Mohammad Hadi

doi:10.1016/j.aspen.2008.09.001

Cited by 82 publications

(41 citation statements)

References 24 publications

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“…The possible explanation for these results is the higher absorption of the toxic substance occurs through ingestion of the food into the insect's body. In previous studies (Negahban et al, 2007;Sahaf et al, 2007Sahaf et al, , 2008Ogendo et al, 2008;Taghizadeh-Saroukolai et al, 2010), it was found that S. oryzae is significantly more susceptible than T. castaneum, which is consistent with the results obtained in our experiment. Studies have not previously reported a rapid-acting nanoemulsion formulation of neem oil produced from low-energy emulsification method and low concentrations of azadirachtin for control of stored products insect pests.…”

Section: Discussionsupporting

confidence: 83%

Formulation and physicochemical characterization of neem oil nanoemulsions for control of Sitophilus oryzae (L., 1763) (Coleoptera: Curculionidae) and Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)

Choupanian¹,

Omar²

2018

Turkish Journal of Entomology

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Section: Discussionsupporting

confidence: 83%

Formulation and physicochemical characterization of neem oil nanoemulsions for control of Sitophilus oryzae (L., 1763) (Coleoptera: Curculionidae) and Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)

Choupanian¹,

Omar²

2018

Turkish Journal of Entomology

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“…Grain weight declined with increasing number of holes and, therefore, weight loss and number of holes were directly related (Pearson"s correlation coefficient r=0.99, P<0.0001, N=36). Infested maize seeds exhibit holes through which the adults emerge (Sahaf et al, 2008). Many indigenous plants, in powder form, effectively control cowpea seed beetles (Ofuya, 2003).…”

Section: Discussionmentioning

confidence: 99%

Effects of aqueous and oil leaf extracts of Pterocarpus santalinoides on the maize weevil, Sitophilus zeamais pest of stored maize grains

Nkechi¹,

Ejike²,

Ihuoma³

et al. 2018

Afr. J. Agric. Res.

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The effects of aqueous and oil leaf extracts of Pterocarpus santalinoides at concentrations of 5, 10, 15 and 20%v/v, each as proctectant in the control of the maize weevil, Sitophilus zeamais, were compared with a conventional insecticide, pirimiphos-methyl at a rate of 0.5 ml / 50 g maize grains of Oba Super II variety in a Completely Randomized Design with four replicates. Parameters assessed, include adult mortality, rate of oviposition and adult emergence, grain damage and weight loss, and seed viability. The data were subjected to analysis of variance and means separated by using Duncan's Multiple Range Test. Mortality of adult S. zeamais increased with increased concentration of the extracts as well as with days of exposure. Emergence rate was significantly (p<0.05) reduced from 41.82% pt in the control values to 19.35 to 2.14% in P. santalinoides aqueous and 9.30 to 0.90% in P. santalinoides oil with pirimiphos methyl having the least number of emerged adults (0.60%). Damaged maize seeds varied from 12.32 to 1.98% in P. santalinoides aqueous extract and 4.86 to 0.61% in P. santalinoides oil extract while 0.59% was recorded in Pirimiphos methyl-treated seed grains. Grain weight loss significantly varied between treatments after two and a half months (F11, 24= 1499.2, p<0.0001). Highest seed germination percentage (78.60%) was observed in seeds treated with 5%v/v P. santalinoides aqueous extract and the control, followed by 72.40% in P. santalinoides oil concentrations at 5, 10 and 15%v/v. The findings showed that almost all treatments except un-treated control decreased (weevil reproduction) grain weight loss and grain damage (holes on grains) in maize.

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“…The holes are sealed with a gelatinous waxy secretion. The eggs, larval and pupal stages of the insect take place within the grain after which the emerging adult weevil comes out of the grain via the holes, leaving visible hole on the grain (Rees, 2004;Sahaf et al, 2008) which invites secondary infection. Maize weevil damage results directly in lost food ready for consumption or lost cash from farmers' pocket ready to buy other valuable resources for the family.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the worldwide continuous increase in the land coverage, production and demand for maize; there are multi-faceted production bottlenecks recognized as bio-physical factors in the world (Sahaf et al, 2008) and in Ethiopia too with emphasis on poor utilization of hybrid seeds (Negeri and Adisu, 2001). Food grain yield losses due to insect pests and diseases are estimated to be within the range of 5%~10% (temperate zone) and 50%~100% (tropical) regions (Van Wyk et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Plant Powders and Cooking Oils against Maize Weevil, <i>Sitophilus zeamais</i> M. (Coleopteran: Curculionidae) under Laboratory Conditions

Gurmu¹,

Waktole²,

Santiago³

2012

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In storage, maize grains are severely destroyed by insects and other storage pests. One of the primary causes of grain loss in stored maize is the damage caused by maize weevil, Sitophilus zeamais. A study was conducted to evaluate selected locally available botanical powders and cooking oils for their effectiveness as grain protectants against maize weevils at JUCAVM in year 2011. The plant powders and cooking oils were compared with untreated control and Malathion super dust as standard check. The experiment was laid-out in Completely Randomized Design with 13 treatments each replicated thrice. Different dependent variables such as cumulative adult mortality, F 1 progeny emergency, grain damage were assessed. The results revealed that, among the botanical powders, there was an increased cumulative adult S. zeamais mortality, i.e. higher mortality, from powders of Chenopodium ambrosoides (70% with LT 50 of 6.50 days), Azadiricta indica leaf (70% with LT 50 of 6.00 days), A. indica bark (70% with LT 50 of 8.40 days) and Tagetus erecta (70% with LT 50 of 9.20 days) after 20 days of exposure periods. Apart from the untreated control, low mortality of S. zeamais adult was recorded from Allium sativum (50% with LT 50 of 18.01 days), C. citratus (55% with LT 50 of 18.30 days), Maesa lanceolata (55% with LT 50 of 16.20 days) and Echinops kebericho (55% with LT 50 of 14.50 days) after 20 days of exposure periods. Highest S. zeamais adult mortality of 95%, 100% and 100% was recorded from Brassica carinata oil, Gossypium hirsutum oil and the standard chemical Malathion, respectively with LT 50 of less than one day in all cases. Maximum number of progeny was emerged from untreated check from 25 th~4 0 th days of exposures with cumulative increase (2 to 14 adults). There was no F 1 progeny emergency from the three treatments (oils and Malathion) over the exposure periods reassuring the potency of the cooking oils against S. zeamais. As a result there was no perforated seed; no weight loss and maximum germination percentage of 94.60% were registered from the two cooking oils on par with the Malathion (95.50%). In conclusion, the two cooking oils were found to be the most potent bio-insecticides on par with standard check, Malathion and they can be used in integrated management of maize weevil, S. zeamais.

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Fumigant toxicity of essential oil from Vitex pseudo-negundo against Tribolium castaneum (Herbst) and Sitophilus oryzae (L.)

Cited by 82 publications

References 24 publications

Formulation and physicochemical characterization of neem oil nanoemulsions for control of Sitophilus oryzae (L., 1763) (Coleoptera: Curculionidae) and Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)

Formulation and physicochemical characterization of neem oil nanoemulsions for control of Sitophilus oryzae (L., 1763) (Coleoptera: Curculionidae) and Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)

Effects of aqueous and oil leaf extracts of Pterocarpus santalinoides on the maize weevil, Sitophilus zeamais pest of stored maize grains

Evaluation of Plant Powders and Cooking Oils against Maize Weevil, <i>Sitophilus zeamais</i> M. (Coleopteran: Curculionidae) under Laboratory Conditions

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