Efficacy of entomopathogenic nematodes (Nematoda: Rhabditida) and insecticide mixtures to control Spodoptera frugiperda (Smith, 1797) (Lepidoptera: Noctuidae) in corn crops

Negrisoli, A. S.; Garcia, Mauro Silveira; Negrisoli, Carla R.C. Barbosa; Bernardi, Daniel; Silva, Alexandre da

doi:10.1016/j.cropro.2010.02.002

Cited by 50 publications

(40 citation statements)

References 11 publications

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“…Numerous pathogens, including viruses, fungi, protozoa, nematodes and bacteria, have been associated with Fall armyworm (Gardner, Noblet, & Schwehr, 1984), but only a few cause epizootics to the pest (Behle & Popham, 2012;Garcia, Raetano, & Leite, 2008;Gómez, Guevara, Cuartas, Espinel, & Villamizar, 2013;Negrisoli, Garcia, Negrisoli, Bernardi, & da Silva, 2010;Polanczyk, Silva, & Fiuza, 2000;Salvadori et al, 2012 tested here has previously shown to be highly virulent against other lepidopteran larvae such as the second instar larvae of the cereal stem borers, Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) and…”

Section: Discussionmentioning

confidence: 93%

Ovicidal effects of entomopathogenic fungal isolates on the invasive Fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)

Akutse

Kimemia

Ekesi

et al. 2019

J Applied Entomology

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Maize is a major staple food for over 300 million people in sub-Saharan Africa.Sustainable productivity of this primary crop has been recently threatened by Fall armyworm (FAW), Spodoptera frugiperda invasion. Due to lack of environmentally safe management strategies, immediate responses by growers and governments to tackle FAW are based on rampant use of pesticides. Looking for efficient biopesticides, twenty entomopathogenic fungal isolates (14 Metarhizium anisopliae and 6Beauveria bassiana) were screened for their efficacy against eggs and second instar larvae of FAW. A single discriminating concentration of 1 × 10 8 conidia ml −1 and four replicates per treatment were used in all experiments. Isolates were assessed for their ability to cause mortality of FAW second instar larvae, eggs and the neonate larvae that emerged from treated eggs. Among the isolates tested, only B. bassiana ICIPE 676 caused moderate mortality of 30% to second instar larvae. Metarhizium anisopliae ICIPE 78, ICIPE 40 and ICIPE 20 caused egg mortalities of 87.0%, 83.0% and 79.5%, respectively, and M. anisopliae ICIPE 41 and ICIPE 7 outperformed all the others by causing 96.5% and 93.7% mortality to the neonate larvae, respectively. The cumulated mortality of eggs and neonates was highest with M. anisopliae ICIPE 41 (97.5%), followed by M. anisopliae ICIPE 7, 655, 40, 20 and 78 with total mortality of 96.0%, 95.0%, 93.5%, 93.0% and 92.0%, respectively. These isolates with high cumulated mortality (≥92%), especially ICIPE 78 and 7, which are already commercialized for spider mites and ticks control respectively, would be good candidates for development as biopesticides for management of FAW in Africa if further evidence of their efficacy is obtained in the field. K E Y W O R D SBeauveria bassiana, biopesticide, eggs, Metarhizium anisopliae, neonate

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Section: Discussionmentioning

confidence: 93%

Ovicidal effects of entomopathogenic fungal isolates on the invasive Fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)

Akutse

Kimemia

Ekesi

et al. 2019

J Applied Entomology

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“…Considering the extreme values of productivity, there were losses of 23.3% according to the infestation of fall armyworm. Negrisoli et al (2010) also found losses estimated at 25% in corn crops related to infestation of Spodoptera frugiperda tolerant to certain chemicals.…”

Section: Resultsmentioning

confidence: 99%

Air-Assistance in Spray Booms which have Different Spray Volumes and Nozzle Types for Chemically Controlling Spodoptera Frugiperda on Corn

Gimenes¹,

Raetano²,

Pogetto³

et al. 2012

Journal of Plant Protection Research

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Abstract:The study aimed to evaluate the performance of air assistance in spray booms using different types of nozzles and spray volumes. We took into account spray deposits, fall armyworm control and crop corn performance in a narrow row cropping system. hollow cone nozzle) were tested, combined with two air assistance levels in the spray boom (with and without air assistance) and a treatment control. In the experimental spraying, Spinosad insecticide was sprayed in amounts of 48 g active substance (a.s.)/ha. The air assistance in the spray boom increased the spray deposits in the V 4 growth stage of the corn plants. Moreover, the application of this technology showed higher efficiency on fall armyworm control, reaching a 100% level 15 days after spraying, in the V 10 growth stage of the plants. The hollow cone nozzle increased the spray deposit level on the corn plants compared with the flat fan nozzle, at growth stage V 4 . However, the flat fan nozzle, combined with air assistance technology, was more effective for controlling fall armyworm in the same growth stage (V 4 ), although the hollow cone nozzle increased the deposit levels on the plants. All the technologies tested in the study promoted a reduction of plant damage from fall armyworm attack. Corn productivity is directly related to the control efficiency of fall armyworm.

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“…Future experiments are also required to determine if consistent yearly treatments using EPNs will result in a significant decline in WSS populations over time. Additionally, there is evidence that EPN infectivity may be enhanced when they are combined with other biorational insecticides such as Spinosad® [45], but this synergy has not been tested against WSS. EPNs can also be added to other spray mixtures (e.g.…”

Section: Discussionmentioning

confidence: 99%

Entomopathogenic Nematodes Combined with Adjuvants Presents a New Potential Biological Control Method for Managing the Wheat Stem Sawfly, Cephus cinctus (Hymenoptera: Cephidae)

2016

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The wheat stem sawfly, (Cephus cinctus Norton) Hymenoptera: Cephidae, has been a major pest of winter wheat and barley in the northern Great Plains for more than 100 years. The insect’s cryptic nature and lack of safe chemical control options make the wheat stem sawfly (WSS) difficult to manage; thus, biological control offers the best hope for sustainable management of WSS. Entomopathogenic nematodes (EPNs) have been used successfully against other above-ground insect pests, and adding adjuvants to sprays containing EPNs has been shown to improve their effectiveness. We tested the hypothesis that adding chemical adjuvants to sprays containing EPNs will increase the ability of EPNs to enter wheat stems and kill diapausing WSS larvae. This is the first study to test the ability of EPNs to infect the WSS, C. cinctus, and test EPNs combined with adjuvants against C. cinctus in both the laboratory and the field. Infection assays showed that three different species of EPNs caused 60–100% mortality to WSS larvae. Adding Penterra, Silwet L-77, Sunspray 11N, or Syl-Tac to solutions containing EPNs resulted in higher WSS mortality than solutions made with water alone. Field tests showed that sprays containing S. feltiae added to 0.1% Penterra increased WSS mortality up to 29.1%. These results indicate a novel control method for WSS, and represent a significant advancement in the biological control of this persistent insect pest.

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Efficacy of entomopathogenic nematodes (Nematoda: Rhabditida) and insecticide mixtures to control Spodoptera frugiperda (Smith, 1797) (Lepidoptera: Noctuidae) in corn crops

Cited by 50 publications

References 11 publications

Ovicidal effects of entomopathogenic fungal isolates on the invasive Fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)

Ovicidal effects of entomopathogenic fungal isolates on the invasive Fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)

Air-Assistance in Spray Booms which have Different Spray Volumes and Nozzle Types for Chemically Controlling Spodoptera Frugiperda on Corn

Entomopathogenic Nematodes Combined with Adjuvants Presents a New Potential Biological Control Method for Managing the Wheat Stem Sawfly, Cephus cinctus (Hymenoptera: Cephidae)

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