Comparative Susceptibility of Tomato Leafminer, Tuta absoluta (Lepidoptera: Gelechiidae) to Common Used Chemical Synthetic Pesticides and Biopesticides in Egypt
Tamer A. Mashtoly;
Abstract
Tomato plants are the most important vegetable crop grown in
Egypt. Larvae of the tomato leafminer, Tuta absoluta, are the most
important and destructive pest of tomato, capable of causing up to
100% of tomato yield loss in some regions. Effectiveness of
chemical control of T. absoluta is limited due to the insect's nature of
damage as well as its rapid capability to develop resistance to diverse
insecticides. A few synthetic pesticides have shown relative impact
in decreasing field populations. Susceptibilities of L2/L3 larvae of
tomato leafminer were assessed to common used chemical synthetic
pesticides such as Chlorfenapyr, Imidacloprid, Acetamiprid,
Chlorantraniliprole, Indoxacarb and common used biopesticides such
as Spinetoram, Abamectin, Emamectin benzoate and Milbemectin
under controlled laboratory conditions using impregnated romaine
lettuce leaves in leaf dipping technique. Results support that Larvae
of Tuta absoluta were highly susceptible to Chlorantraniliprole
followed by Chlorfenapyr. However, Moderate susceptibility were
shown up toImidacloprid, Acetamiprid, Indoxacarb, Spinetoram and
Milbemectin, but slight susceptibility were detected to Abamectin
and Emamectin benzoate which showed low levels of activity at
affordable concentrations.
Statistical analyses did not detect any significant differences
at LC50 level between Chlorantraniliprole and Chlorfenapyr as the
highly effective ones, or between Spinetoram, Milbemectin as
moderate effective biopesticides or among Indoxacarb, Imidacloprid
and Acetamiprid as moderate efficient chemical synthetic pesticides.
No significant differences were found between Abamectin and
Emamectin benzoate as slightly efficient biopesticides.
However, significant differences were emphasized between
both of them and other tested pesticides.
Egypt. Larvae of the tomato leafminer, Tuta absoluta, are the most
important and destructive pest of tomato, capable of causing up to
100% of tomato yield loss in some regions. Effectiveness of
chemical control of T. absoluta is limited due to the insect's nature of
damage as well as its rapid capability to develop resistance to diverse
insecticides. A few synthetic pesticides have shown relative impact
in decreasing field populations. Susceptibilities of L2/L3 larvae of
tomato leafminer were assessed to common used chemical synthetic
pesticides such as Chlorfenapyr, Imidacloprid, Acetamiprid,
Chlorantraniliprole, Indoxacarb and common used biopesticides such
as Spinetoram, Abamectin, Emamectin benzoate and Milbemectin
under controlled laboratory conditions using impregnated romaine
lettuce leaves in leaf dipping technique. Results support that Larvae
of Tuta absoluta were highly susceptible to Chlorantraniliprole
followed by Chlorfenapyr. However, Moderate susceptibility were
shown up toImidacloprid, Acetamiprid, Indoxacarb, Spinetoram and
Milbemectin, but slight susceptibility were detected to Abamectin
and Emamectin benzoate which showed low levels of activity at
affordable concentrations.
Statistical analyses did not detect any significant differences
at LC50 level between Chlorantraniliprole and Chlorfenapyr as the
highly effective ones, or between Spinetoram, Milbemectin as
moderate effective biopesticides or among Indoxacarb, Imidacloprid
and Acetamiprid as moderate efficient chemical synthetic pesticides.
No significant differences were found between Abamectin and
Emamectin benzoate as slightly efficient biopesticides.
However, significant differences were emphasized between
both of them and other tested pesticides.
Other data
Title | Comparative Susceptibility of Tomato Leafminer, Tuta absoluta (Lepidoptera: Gelechiidae) to Common Used Chemical Synthetic Pesticides and Biopesticides in Egypt | Authors | Tamer A. Mashtoly | Keywords | Tomato leafminer;Tuta absoluta;Susceptibility;Efficiency;Biopesticides;Chemical synthetic;Pesticides | Issue Date | 2015 | Publisher | The Egyptian Society of Biological Sciences | Journal | Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control | Volume | 7 | Issue | 1 | Start page | 81 | End page | 89 | ISSN | 2090-0791 | DOI | 10.21608/eajbsf.2015.17242 |
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