The impact of insecticides on the cotton mealybug, Phenacoccus solenopsis (Tinsley): Efficacy on potato, a new record of host plant in Egypt

The cotton mealybug, Phenacoccus solenopsis (Tinsley) (Hemiptera: Pseudococcidae), has become a widespread pest causing serious losses in several economically important crops, particularly cotton. To the best of our knowledge this is the first record of cotton mealybug, P. solenopsis as a new pest o...

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Bibliographic Details
Published in:Journal of plant protection research 2019, Vol.59 (1), p.50-59
Main Authors: Rezk, Mohamed, Hassan, Abdel-Nasser T., El-Deeb, Moustafa F., Shaarawy, Nehal, Dewer, Youssef
Format: Article
Language:English
Subjects:
Abamectin
Butterflies & moths
Cotton
Economic importance
Fungicides
Growing season
Host plants
Imidacloprid
Insecticides
Insects
mealybugs
neonicotinoid
Pest control
Pests
Phenacoccus solenopsis
potato
Potatoes
Thiamethoxam
Vegetables
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Summary:The cotton mealybug, Phenacoccus solenopsis (Tinsley) (Hemiptera: Pseudococcidae), has become a widespread pest causing serious losses in several economically important crops, particularly cotton. To the best of our knowledge this is the first record of cotton mealybug, P. solenopsis as a new pest of potato plants in Egypt. The insect was noticed on potato plants for the first time during the growing season of 2016 (mid-August 2016). Mealybug specimens were collected from infested potato plants and identified as P. solenopsis. In an attempt to control this insect pest species, seven insecticides viz. sulfoxaflor, abamectin + thiamethoxam, spirotetramat, thiamethoxam, imidacloprid, buprofezin, and pymetrozine, belonging to different chemical groups, were tested for their effect against nymphs and adult females of P. solenopsis on potato under field conditions. The obtained results indicated that sulfoxaflor, abamectin + thiamethoxam and spirotetramat had the highest efficacy against P. solenopsis recording 80.3–96.05% reduction of the insect population after 21 days of application. Thiamethoxam, imidacloprid, buprofezin and pymetrozine failed to exhibit sufficient P. solenopsis control.
ISSN:1427-4345
1899-007X
1899-007X
DOI:10.24425/jppr.2019.126042