Susceptibility of Cacopsylla pyri and C. pyricola (Homoptera: Psyllidae) to Avermectin B1 Applied Topically and as Residues on Pear Foliage

Étienne, Jean; Nguyen, T. X.; Burts, Everett

doi:10.1093/jee/85.1.182

Cited by 4 publications

(1 citation statement)

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“…The test carried out with abamectin showed that it was approximately as effective as that of the laboratory strain (resistance rate = 0.7). The LC 50 obtained on C. pyri after 24 h was similar to that obtained by Etienne (1992) on P. pyricola after 72 h with avermectin B1. Amitraz had a resistance rate of 4.7‐fold, but this insecticide is known to have a predominantly larvicidal activity.…”

Section: Discussionsupporting

confidence: 78%

Geographic and seasonal variability of resistance to insecticides in Cacopsylla pyri L. (Hom., Psyllidae)

Bues

Boudinhon

Toubon

et al. 1999

J Applied Entomology

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Pear psylla (Cacopsylla pyri L.) resistance to insecticides was studied in adults using the topical application method. In the Avignon population, the winter forms tested (diapausing generation) showed a greater tolerance to insecticide than the summer forms. High resistance rates, ranging from 25‐ to 180‐fold, were observed for three organo‐phosphorous insecticides. Resistance rates were seven times lower for pyrethrinoids and amitraz and practically nil for carbamates. Inter‐population resistance rates, for an identical period, were different for the three organo‐phosphorous insecticides and for deltamethrin in two localities. However, it was difficult to make comparisons in time due to seasonal variations. Rates of synergism by S,S,S‐tributyl phosphorotrithioate (DEF) and piperonyl butoxide (PBO) were low when applied 4 h before the insecticide (0.3‐ to 3.3‐fold), except for deltamethrin with PBO (>60‐fold). The presence of mixed‐function oxidases in winter forms is discussed with regard to bibliographical data concerning another psylla species from North America (Psylla pyricola Foerster).

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Section: Discussionsupporting

confidence: 78%

Geographic and seasonal variability of resistance to insecticides in Cacopsylla pyri L. (Hom., Psyllidae)

Bues

Boudinhon

Toubon

et al. 1999

J Applied Entomology

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Cacopsylla pyricola (psyllid, pear)

2021

CABI Compendium

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Knockdown Mortality, Repellency, and Residual Effects of Insecticides for Control of Adult <I>Bactericera cockerelli</I> (Hemiptera: Psyllidae)

Gharalari¹,

Nansen²,

Lawson

et al. 2009

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The psyllid Bactericera cockerelli (Sulc) (Hemiptera: Psyllidae) is the vector of a bacterial pathogen causing zebra chip (ZC) disease in potato, Solanum tuberosum L. (Solanaceae). Recently, ZC has become important to potato growers and the potato chipping industry in the southwestern United States, Mexico, Central America, and New Zealand. In the current study, we evaluated the knockdown effect of 12 insecticides against adult B. cockerelli, and we examined the effects of treating potato leaves: top side only, bottom side only, or both sides. Within 48 h of exposure, abamectin showed the highest and most consistent rate of adult B. cockerelli mortality and a dosage response to three dosages within labeled field rates. Choice tests conducted in petri dishes, involving untreated potato leaves and leaves treated with abamectin, revealed that abamectin did not affect host preference of adult B. cockerelli. A residual test under field conditions revealed that, although highly effective immediately after application, abamectin-effect was nonsignificantly different from control treatments 24 and 48 h after field application. Higher adult B. cockerelli mortality was recorded from potato plants treated with ground application compared with aerial 48 h after application. Our results indicated that abamectin has a high knockdown effect on adult B. cockerelli and that it can be used effectively in insecticide rotation programs against adult B. cockerelli and ZC control in potatoes.

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Susceptibility of Cacopsylla pyri and C. pyricola (Homoptera: Psyllidae) to Avermectin B1 Applied Topically and as Residues on Pear Foliage

Cited by 4 publications

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Geographic and seasonal variability of resistance to insecticides in Cacopsylla pyri L. (Hom., Psyllidae)

Geographic and seasonal variability of resistance to insecticides in Cacopsylla pyri L. (Hom., Psyllidae)

Cacopsylla pyricola (psyllid, pear)

Knockdown Mortality, Repellency, and Residual Effects of Insecticides for Control of Adult <I>Bactericera cockerelli</I> (Hemiptera: Psyllidae)

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