| Autor: |
Arlindo Leal Boiça Junior, Nara Elisa Lobato Rodrigues, Julio Cesar Janini, Daline Benites Bottega, Vitor Quintela Sousa, Anderson Gonçalves da Silva |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
EntomoBrasilis, Vol 13, Pp e909-e909 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1983-0572 |
| DOI: |
10.12741/ebrasilis.v13.e909 |
| Popis: |
The current study aimed to test how aqueous neem Azadirachta indica A. Juss. extract affects the attractiveness, feeding and development of Spodoptera frugiperda (J. E. Smith) on different: peanut cultivars. Tests were carried out under laboratory conditions with the cultivars IAC 503 and IAC 147 and aqueous neem extract in concentrations (mass/volume) of 5 and 10%, obtained from seeds and dried in an oven at a temperature of 35 to 38 °C for 15 days, with caterpillars offered a food choice preference test. For this, leaf discs from each treatment were placed in Petri dishes into which three first instar caterpillars were released. To assess resistance biology, single newly-hatched caterpillars were transferred to individual Petri dishes, where the following biological parameters were measured: larval mortality after 1, 3, 5, 7 and 10 days; pupal mortality; total mortality; weight of 10-day-old caterpillars; pupal weight at 24 hours; and adult longevity. The main conclusions of the work, include: cultivar IAC 147 was less attractive and consumed less; cultivar IAC 503 plus 10% neem extract reduced leaf consumption; cultivar type did not affect caterpillar biological development, and 10% neem extract caused 100% mortality in S. frugiperda. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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