Determination of most effective insecticides against maize fall armyworm, Spodoptera frugiperda in South Western Ethiopia

Sileshi, Addisu; Negeri, Mulugeta; Selvaraj, Thangavel; Abera, Amsalu

doi:10.1080/23311932.2022.2079210

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…Thus, organophosphate+ pyrethroids class of the selected insecticides in company recommendation rate had better efficacy and ultimately improving the crop yield. This finding is in line with that of Addisu et al (2022) who reported that pyrethroids were effective in maize.…”

Section: Resultssupporting

confidence: 93%

“…The result also revealed the larval incidence was non-significant on all assessment dates indicating uniform distribution. Addisu et al (2022) has reported similar results. This might be due to low intensity of infestation across the growth stages of sorghum in the season.…”

Section: Resultssupporting

confidence: 59%

“…This is because of the relatively lower cost as well as lower phytotoxicity effect of insecticides rate and increased grain yield. Appropriate use of company recommendation rate for the pyrethroid insecticide could minimize maize plant damage and benefits to human and other beneficial insects (Addisu et al, 2022). Among the pyrethroid + organophosphate Agrolambacin (Profen+ L. cyhalothrin) and Proven (profenophos + cypermethrin) in company recommendation rate were more suitable for developing management strategies.…”

Section: Resultsmentioning

confidence: 99%

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Efficacy of Insecticides against Fall Army Worm Spodoptera frugiperda (J E Smith) on Sorghum

Worku,

Kefale,

Gelaye

et al. 2024

IJE

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Spodoptera frugiperda (J E Smith) is an important pest of sorghum, which is causing heavy losses in Ethiopia. This study was conducted at the Metema experimental site Gondar, Ethiopia during main cropping seasons of 2020 and 2021 to determining appropriate rate of selected insecticides against S. frugiperda larvae using randomized complete block design with three replications. Melkam variety used at a seed rate of 15 kg ha-1 and plot size of 22.5 m2 was used. Plots sprayed with Proven and Agrolambacin in company recommendation rate reduced the incidence of larvae and gave higher grain yield. Cost benefit analysis showed that maximum net benefit (ETB 63,410.3 ha-1) was obtained with followed by Agrolambacin 55535 ETB ha-1.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Efficacy of Insecticides against Fall Army Worm Spodoptera frugiperda (J E Smith) on Sorghum

Worku,

Kefale,

Gelaye

et al. 2024

IJE

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Productivity and efficiency heterogeneity among maize smallholder farmers in Ethiopia

Alemu,

Berihun,

C. Lokossou

et al. 2024

Cogent Food & Agriculture

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Ecotoxicological Impact of Ad-Hoc Approved Synthetic Insecticides on the Biological Performance of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

Hasan,

Parveen,

Bukhari

et al. 2024

Preprint

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Laboratory assessments were conducted to evaluate the efficacy of seven ad-hoc approved insecticides, namely Chlorantraniliprole, Emamectin benzoate, Spinetoram, Thiodicarb, Chlorantraniliprole + Lambda-cyhalothrin, Emamectin benzoate + Lufenuron, and Novaluron + Emamectin benzoate, against Spodoptera frugiperda. These evaluations were carried out using a diet incorporation assay in a controlled laboratory environment with a temperature of 27 ± 1°C, relative humidity of 65 ± 5%, and a 12:12 (L:D) photoperiod. During the bioassay procedure, it is noteworthy that the doses of all tested insecticides were carefully administered within the minimum range of their recommended field rates. In acute toxicity trials, spinetoram had the greatest impact on reducing the survival of S. frugiperda. Similarly, corrected mortality was highest with spinetoram and lowest with thiodicarb. Additionally, chronic toxicity trials were conducted using life table response experiments (LTREs) in the F1 progeny of the group that had experienced acute toxicity. Extended development with the highest mortality was observed in spinetoram compared to other tested insecticides. Furthermore, life indices parameters like potential fecundity (Pf), natality rate (mx), intrinsic rate of increase (rm), net reproductive rate (mx) and finite rate of increase (λ) was greatly reduced in S. frugiperda treated with spinetoram compared with other insecticides specially thiodicarb. However, mean generation time (Tc), corrected generation time (τ) and the doubling time (DT) was prolonged in spinetoram compared with other tested insecticides. Furthermore, in sex ratio analysis, all tested insecticides, except for thiodicarb, led to a significant decrease in the proportion of females in the population of S. frugiperda. These findings strongly suggest the possible emergence of resistance in S. frugiperda against thiodicarb. Moreover, considering the endorsement of this insecticide by the Government of India through ad-hoc approval, farmers are likely to persist in its application. Hence, it is imperative to conduct further validation of these results, necessitating field evaluations for confirmation.

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Determination of most effective insecticides against maize fall armyworm, Spodoptera frugiperda in South Western Ethiopia

Cited by 4 publications

References 30 publications

Efficacy of Insecticides against Fall Army Worm <i>Spodoptera frugiperda</i> (J E Smith) on Sorghum

Efficacy of Insecticides against Fall Army Worm <i>Spodoptera frugiperda</i> (J E Smith) on Sorghum

Productivity and efficiency heterogeneity among maize smallholder farmers in Ethiopia

Ecotoxicological Impact of Ad-Hoc Approved Synthetic Insecticides on the Biological Performance of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

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