Efficacy of biological control agents, synthetic insecticides, and their combinations to control tobacco budworm [Heliothis virescens (Lepidoptera: Noctuidae)] in pigeon pea
| Autor: | Angela M. Linares, Irma Cabrera, Leidy Sarmiento, Diego M. Viteri |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Heliothis virescens biology Biological pest control food and beverages Pesticide biology.organism_classification 01 natural sciences Toxicology Lepidoptera genitalia 010602 entomology Cajanus chemistry.chemical_compound chemistry Chlorpyrifos Noctuidae PEST analysis Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Crop Protection. 122:175-179 |
| ISSN: | 0261-2194 |
| Popis: | Tobacco budworm, Heliothis virescens (F.) (Lepidoptera: Noctuidae), is an important pest in pigeon pea [Cajanus cajan (L.) Mill.] in Puerto Rico and the tropics. The use of chemicals is the most effective strategy to control this pest. Our objective was to assess the efficacy of two biological control agents, five synthetic insecticides, and four combinations to control tobacco budworm larvae. Pigeon pea plots were sprayed with 11 insecticide treatments and water as control in 2017 and 2018. Tobacco budworm incidence and severity, and data of dry-pod/seed yield were evaluated at harvest. Plots sprayed with water, the biological control agents [Steinernema carpocapsae (Weiser) (SC), and nucleopolyhedrovirus (NP)], and chlorpyrifos had significantly higher incidences (>24%) compared with plots applied with spinetoram alone and combined with SC and NP (12–18%) in both planting years. However, there were no significant differences (P ≥ 0.05) between treatments for tobacco budworm severity (mean scores of 4.00 to 4.83 in 2017 and 2.90 to 3.60 in 2018). In contrast, significantly lower incidence ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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