Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae)
Wettable powder formulations by microencapsulation of viral occlusion bodies (OBs) of both Spodoptera frugiperda multiple nucleopolyhedrovirus from Colombia (SfCOL) and a genotypic variant (SfCOL-A) were evaluated for controlling the fall armyworm S. frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)...
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2017-04-01
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| Series: | Acta Agronómica |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/54354 |
| _version_ | 1819053437153705984 |
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| author | Gloria Patricia Barrera Cubillos Juliana Andrea Gómez-Valderrama Laura Fernanda Villamizar Rivero |
| author_facet | Gloria Patricia Barrera Cubillos Juliana Andrea Gómez-Valderrama Laura Fernanda Villamizar Rivero |
| author_sort | Gloria Patricia Barrera Cubillos |
| collection | DOAJ |
| description | Wettable powder formulations by microencapsulation of viral occlusion bodies (OBs) of both Spodoptera frugiperda multiple nucleopolyhedrovirus from Colombia (SfCOL) and a genotypic variant (SfCOL-A) were evaluated for controlling the fall armyworm S. frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in maize crops. Microencapsulation preserved OBs activity after three months of storage at 35ºC, where insecticidal activity loss was not greater than 12%. Additionally, the formulation protected the OBs against inactivation caused by UV-B radiation, retaining its insecticidal activity after 6 hours of UV laboratory exposure, in contrast to unformulated viral suspensions, which presented an Original Activity Remaining (OAR) between 12.1 and 50%. Under greenhouse conditions, the insect mortality was greater than 80% with microencapsulated viruses. In field trials, treatments reduced the percentage of damaged plants to levels below the economic injury level (35%) when the formulated and unformulated virus were applied at 8x1011 OBs/ha (800g/ha) dose, while the damage in the control treatment was close to 60%. Microencapsulation of SfCOL and SfCOL-A OBs provides useful advantages related to half-life and photostability of both viruses, which showed the same efficacy under field conditions. |
| first_indexed | 2024-12-21T12:35:43Z |
| format | Article |
| id | doaj.art-79aede5d52604c81877b6cc185b6f94d |
| institution | Directory Open Access Journal |
| issn | 0120-2812 2323-0118 |
| language | English |
| last_indexed | 2024-12-21T12:35:43Z |
| publishDate | 2017-04-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Acta Agronómica |
| spelling | doaj.art-79aede5d52604c81877b6cc185b6f94d2022-12-21T19:03:56ZengUniversidad Nacional de ColombiaActa Agronómica0120-28122323-01182017-04-0166226727410.15446/acag.v66n2.5435444250Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae)Gloria Patricia Barrera Cubillos0Juliana Andrea Gómez-Valderrama1Laura Fernanda Villamizar Rivero2CORPOICA. Corporación Colombiana de Investigación Agropecuaria. Centro de Investigación Tibaitatá, Cundinamarca, Colombia.CORPOICA. Corporación Colombiana de Investigación Agropecuaria. Centro de Investigación Tibaitatá, Cundinamarca, Colombia.CORPOICA. Corporación Colombiana de Investigación Agropecuaria. Centro de Investigación Tibaitatá, Cundinamarca, Colombia.Wettable powder formulations by microencapsulation of viral occlusion bodies (OBs) of both Spodoptera frugiperda multiple nucleopolyhedrovirus from Colombia (SfCOL) and a genotypic variant (SfCOL-A) were evaluated for controlling the fall armyworm S. frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in maize crops. Microencapsulation preserved OBs activity after three months of storage at 35ºC, where insecticidal activity loss was not greater than 12%. Additionally, the formulation protected the OBs against inactivation caused by UV-B radiation, retaining its insecticidal activity after 6 hours of UV laboratory exposure, in contrast to unformulated viral suspensions, which presented an Original Activity Remaining (OAR) between 12.1 and 50%. Under greenhouse conditions, the insect mortality was greater than 80% with microencapsulated viruses. In field trials, treatments reduced the percentage of damaged plants to levels below the economic injury level (35%) when the formulated and unformulated virus were applied at 8x1011 OBs/ha (800g/ha) dose, while the damage in the control treatment was close to 60%. Microencapsulation of SfCOL and SfCOL-A OBs provides useful advantages related to half-life and photostability of both viruses, which showed the same efficacy under field conditions.https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/54354MicroencapsulationbaculovirusSpodoptera frugiperdabiological controlmaize |
| spellingShingle | Gloria Patricia Barrera Cubillos Juliana Andrea Gómez-Valderrama Laura Fernanda Villamizar Rivero Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae) Acta Agronómica Microencapsulation baculovirus Spodoptera frugiperda biological control maize |
| title | Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae) |
| title_full | Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae) |
| title_fullStr | Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae) |
| title_full_unstemmed | Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae) |
| title_short | Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae) |
| title_sort | efficacy of microencapsulated nucleopolyhedroviruses from colombia as biological insecticides against spodoptera frugiperda lepidoptera noctuidae |
| topic | Microencapsulation baculovirus Spodoptera frugiperda biological control maize |
| url | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/54354 |
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