Efficacy of different formulations of essential oils against the cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae) under laboratory conditions

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Roozdar Elham; HABIBPOUR BEHZAD; MOSSADEGH MOHAMMAD SAEED; MAHMOODI SOURESTANI MOHAMMAD

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Journal: Journal of Entomological Society of Iran Year:2020 | Volume:40 | Issue:2 Page(s): 183-199

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Title

Efficacy of different formulations of essential oils against the cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae) under laboratory conditions

Author(s)

Roozdar Elham | HABIBPOUR BEHZAD | MOSSADEGH MOHAMMAD SAEED | MAHMOODI SOURESTANI MOHAMMAD | Issue Writer Certificate

Keywords

Phenacoccus solenopsisQ1

Essential oilsQ1

Botanical insecticidesQ1

Contact toxicityQ1

GC-MS analysisQ1

Abstract

During recent decades, one of the most important methods of replacing synthetic pesticides is using of new formulations based on plant Essential oils (EOs) that can improve their quality and effectiveness. Due to restrictions in application of EOs in pure form, preparation of their commercial formulations is essential. In this research, the Contact toxicity of fifteen different plant EOs on 1st instar nymphs of Phenacoccus solenopsis was examined at 25± 1° C, 65± 5% RH, and a photoperiod of 16: 8 h = L: D. Three EOs including; Mentha longifolia (L. ), Mentha piperita (L. ), and Oliveria decumbens (Vent. ) had the highest Contact toxicity and were considered for the next experiments. According to GC and GC/MS analysis, pulegone (51. 49%), menthone (22. 75%), and 1, 8-cineole (11. 69%) were the principal components of M. longifolia; menthone (36. 51%), menthene (28. 51%), menthol (8. 12%), and 1, 8-cineole (7. 66%) were the principal components of M. piperita and the main components of O. decumbens EO were thymol (43. 99%), γ-terpinene (13. 96%), and p-cymene (12. 62%). Moreover, Contact toxicity of the EOs were evaluated on 1st instar nymphs of P. solenopsis under laboratory conditions, before and after formulation. Based on lethal concentration trials, LC50 values of pure and formulated EOs of M. longifolia, M. piperita, and O. decumbens on 1st instar nymphs were 113. 49, 129. 74, 149. 93, and 48. 22, 55. 55, 61. 68 ppm, respectively; after 48 hours. Therefore, the Contact toxicity of formulated EOs of M. longifolia, M. piperita, and O. decumbens were 2. 34, 2. 36, and 2. 43-fold higher than the pure EOs. Based on physicochemical trials, the prepared formulations were stable under the experimental conditions. Therefore, formulation of EOs of examined plants can be considered as new environmentally friend pesticides for controlling of the pests.

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APA: Copy

Roozdar, Elham, HABIBPOUR, BEHZAD, MOSSADEGH, MOHAMMAD SAEED, & MAHMOODI SOURESTANI, MOHAMMAD. (2020). Efficacy of different formulations of essential oils against the cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae) under laboratory conditions. JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI), 40(2 ), 183-199. SID. https://sid.ir/paper/371845/en

Vancouver: Copy

Roozdar Elham, HABIBPOUR BEHZAD, MOSSADEGH MOHAMMAD SAEED, MAHMOODI SOURESTANI MOHAMMAD. Efficacy of different formulations of essential oils against the cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae) under laboratory conditions. JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI)[Internet]. 2020;40(2 ):183-199. Available from: https://sid.ir/paper/371845/en

IEEE: Copy

Elham Roozdar, BEHZAD HABIBPOUR, MOHAMMAD SAEED MOSSADEGH, and MOHAMMAD MAHMOODI SOURESTANI, “Efficacy of different formulations of essential oils against the cotton mealybug, Phenacoccus solenopsis (Hemiptera: Pseudococcidae) under laboratory conditions,” JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI), vol. 40, no. 2 , pp. 183–199, 2020, [Online]. Available: https://sid.ir/paper/371845/en

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