Integration of Calneem® oil and parasitoids to control Cadra cautella and Corcyra cephalonica in stored grain cereals

Adarkwah, Charles; Obeng‐Ofori, D.; Adler, Cornel; Büttner, Carmen; Reichmuth, Christoph; Schöller, Matthias

doi:10.1007/s12600-011-0158-4

Cited by 8 publications

(3 citation statements)

References 36 publications

(31 reference statements)

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“…Similarly, neem oil caused high mortality to all three insects as well as low survival time when administered at the highest dose. This adds to the existing bibliography on the role of neem oil in providing sustained protection of stored grains [45] and efficient pest control in storage facilities, alone or in combination with other protective measures [46][47][48][49][50][51][52][53][54][55]. Only a few studies have investigated the effect of neem oil on the survival of our experimental insect species.…”

Section: Discussionmentioning

confidence: 99%

Larvicidal Action of Cannabidiol Oil and Neem Oil against Three Stored Product Insect Pests: Effect on Survival Time and in Progeny

Mantzoukas

Ntoukas

Lagogiannis

et al. 2020

Biology

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SStored product pests can be detrimental to agricultural produce. As much as chemical pesticides are effective control agents, they involve several environmental and health risks. Within the framework of studies on alternative pest management methods, interest has focused on a plethora of plants whose extracts have demonstrated promising action as insecticides. Azadirachta indica and the derived neem oil have been extensively tested against many harmful insect species. In contrast, Cannabis sativa L. and its main compound, CBD, a highly concentrated cannabinoid, have not been investigated much. The present study examined the potential insecticidal activity of CBD and neem oils against 4th instar larvae of Tribolium confusum, Oryzaephilus surinamensis and Plodia interpunctella on wheat, rice and corn seeds. Treatment efficacy was expressed in terms of larval mortality. Mortality was observed in relation to dosage, time exposure intervals and product types. The results showed clear pesticidal activity for both oils, which at high doses induced significant mortality. The treatments produced significantly fewer offspring in the insect species tested than the control. The efficacy of treatment in progeny suppression was, as expected, dose dependent.

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Section: Discussionmentioning

confidence: 99%

Larvicidal Action of Cannabidiol Oil and Neem Oil against Three Stored Product Insect Pests: Effect on Survival Time and in Progeny

Mantzoukas

Ntoukas

Lagogiannis

et al. 2020

Biology

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“…Therefore, investigating the appropriate, safe, and economical methods, such as botanical insecticides, can be effective in the management of insects (Hikal et al, 2017;Ahmed et al, 2021). Botanical insecticides, namely, pyrethrum, neem, and insecticides based on plant essential oils (EOs) and plant extracts are commercially produced and entered the marketplace (Isman, 2006;Rharrabe et al, 2008;Adarkwah et al, 2010;Dively et al, 2020;Moldovan et al, 2020). Among botanical insecticides, plant EOs have advantages such as low toxicity on mammals, fast degradability, and local availability (Isman, 2004).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Carum copticum essential oil–loaded chitosan nanoparticles and evaluation its insecticidal activity for controlling Rhyzopertha dominica and Tribolium confusum

2023

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IntroductionPlant essential oils (EOs) can be used as a feasible tool for insect pest control. Nanoparticle formulations of plant EOs can improve the efficiency and stability of EOs, as well as insecticidal potential. MethodsIn this study, Carum copticum L. essential oil–loaded nanoparticles (OLNs) were prepared via an oil-in-water emulsion, followed by droplet solidiffication via ionic gelation using a cross-linker, sodium tripolyphosphate (TPP). The nanoparticles were characterized by ultraviolet and visible (UV–Vis) spectrophotometry, Fourier-transform infrared spectroscopy (FTIR), laser light scattering (LS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Moreover, the insecticidal activity of C. copticum EO and OLNs was evaluated against Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae) and Tribolium confusum Jacquelin du Val. (Coleoptera: Tenebrionidae). In addition, their effectiveness was assessed on the progeny production of tested insect species.Results and discussionThe loading efficiency ranged from 34.33 to 84.16% when the chitosan to EO weight ratio was 1:1.25 and 1:0.5, respectively. The loading efficiency decreased with increasing EO content in the nanoparticles. The OLN particles exhibited spherical shape. The particle size was in the range 120–223.6 nm and increased with the increase of EO to chitosan ratio. So that the largest mean particle size (223.6 nm) was reported in the 1:1.25 weight ratio of chitosan to the EO. The mortality percentage of R. dominica and T. confusum adults were 74 and 57% when exposed for 7 days to 2000 mg/kg of OLNs at the 1:1.25 weight ratio, while EO caused 62 and 44% mortality on both insect species, respectively. Therefore, OLNs can potentially improve the insecticidal activity of C. copticum EO and could be applied to facilitate control of stored-product insect pests.

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“…Biological control may provide an affordable and sustainable option for reducing losses to pests in stored food products (Bellows, ; Shin et al., ; Adarkwah et al., ). The use of natural enemies to control insect pests in storage situations is not a new concept, but it has only recently received serious attention – pathogens, parasitoids, and predators have been investigated in the context of stored product protection (Schöller & Flinn, ; Adarkwah et al., , , , , ; Adarkwah & Schöller, ; Flinn & Schöller, ). Currently, modern protection of stored products is seeking to apply biocontrol strategies such as the combination of predators and parasitoids, which would eventually become an integral part of the integrated pest management (IPM) approach, especially in Africa where stored‐product insect pests concurrently infest stored grains.…”

Section: Introductionmentioning

confidence: 99%

Predator‐parasitoid‐host interaction: biological control of Rhyzopertha dominica and Sitophilus oryzae by a combination of Xylocoris flavipes and Theocolax elegans in stored cereals

Adarkwah

Obeng‐Ofori

Opuni‐Frimpong

et al. 2019

Entomologia Exp Applicata

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Post‐harvest management constraints are economically significant in Africa for a broad range of commodities, resulting in a substantial negative impact on food security and livelihoods. Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) coexists with Sitophilus oryzae (L.) (Coleoptera: Dryophthoridae) – they infest stored cereal grains, especially in sub‐Saharan Africa, and cause significant losses in storage. Laboratory studies were carried out to determine the efficacy of Xylocoris flavipes (Reuter) (Hemiptera: Anthocoridae) and Theocolax elegans (Westwood) (Hymenoptera: Pteromalidae), alone or in combination, in suppressing populations of R. dominica and S. oryzae in stored rice and wheat grains. The weight loss and moisture of the infested grains were assessed, for the various combinations of the two pest insects and the two natural enemies. In rice there was a synergistic effect of the combined release of T. elegans and X. flavipes against both R. dominica and S. oryzae compared to the effect of one natural enemy alone. With the combined release, only 2% F1 progeny of the pest beetles emerged compared to the untreated control (100%), whereas 3.5 and 6% emerged when X. flavipes and T. elegans, respectively, were released alone. When the two natural enemies were released in combination, 0.4% R. dominica F1 progeny emerged, compared to 1.6% with X. flavipes or T. elegans alone. In the combined release only 0.3% S. oryzae F1 progeny emerged, whereas 65% emerged with X. flavipes alone and 41% with T. elegans alone. No synergistic effect of the combined release of the two natural enemies was detected in wheat. In stored rice, the lowest percentage of weight loss (44%) was found when both natural enemies and both beetle species were present. We conclude that the combination of the predator and the parasitoid should be recommended when R. domininca and S. oryzae coexist and feed on stored cereals, especially rice.

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Integration of Calneem® oil and parasitoids to control Cadra cautella and Corcyra cephalonica in stored grain cereals

Cited by 8 publications

References 36 publications

Larvicidal Action of Cannabidiol Oil and Neem Oil against Three Stored Product Insect Pests: Effect on Survival Time and in Progeny

Larvicidal Action of Cannabidiol Oil and Neem Oil against Three Stored Product Insect Pests: Effect on Survival Time and in Progeny

Fabrication of Carum copticum essential oil–loaded chitosan nanoparticles and evaluation its insecticidal activity for controlling Rhyzopertha dominica and Tribolium confusum

Predator‐parasitoid‐host interaction: biological control of Rhyzopertha dominica and Sitophilus oryzae by a combination of Xylocoris flavipes and Theocolax elegans in stored cereals

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