Effect of tebufenozide on, &lt;i&gt;Encarsia citrina,&lt;/i&gt; an armoured scale parasitoid

Tomkins, A. R.; Thomson, C.; Wilson, D.R.

doi:10.30843/nzpp.1995.48.11508

Cited by 4 publications

(5 citation statements)

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“…Neither lufenuron (Table 1) or B. thuringiensis (Table 2), at the rates tested, had any effect on greedy scale development since there was a similar age structure and mortality in the control and insecticide treatments. Second instar greedy scale parasitised by E. citrina were generally unable to continue their development to the next instar, as shown previously (Tomkins et al 1995). This is shown by the relatively higher proportion of greedy scale, which had been exposed to parasitism, found in the second instar for both insecticides.…”

Section: Results and Discussion Effect Of Pesticides On Immature Parasupporting

confidence: 79%

“…In order to determine whether these insecticides have potential for use in second-stage Kiwigreen, we are screening the toxicity of these and currently used insecticides to selected natural enemies of kiwifruit pests. In a previous paper (Tomkins et al 1995), we reported the effect of tebufenozide on E. citrina. This paper reports on further trials investigating the effect of various insecticides on both the larval and adult stages of E. citrina.…”

Section: Introductionmentioning

confidence: 98%

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Effect of insecticides on immature and mature stages of Encarsia citrina, an armoured scale parasitoid

Thomson¹,

Tomkins²,

Wilson³

1996

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Laboratory bioassays were conducted to determine the effect of Bacillus thuringiensis, diazinon, diofenolan and lufenuron on preimaginal and/or adult stages of Encarsia citrina, a key parasitoid of the armoured scale insects infesting kiwifruit. Bioassays were conducted by dipping potatoes, which were infested with second instar greedy scale (Hemiberlesia rapax) parasitised by E. citrina, in insecticide solutions, or caging adult parasitoids in treated Petri dishes. Of the insecticides tested, diazinon had the highest level of toxicity to the adult parasitoids. The need to change to insecticides with low or nil toxicity to scale parasitoids for increased biological control in 'Kiwigreen' is discussed.

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Section: Results and Discussion Effect Of Pesticides On Immature Parasupporting

confidence: 79%

Section: Introductionmentioning

confidence: 98%

Effect of insecticides on immature and mature stages of Encarsia citrina, an armoured scale parasitoid

Thomson¹,

Tomkins²,

Wilson³

1996

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“…Many other studies have similarly found that tebufenozide did not affect hymenopteran parasitoids (e.g. Tomkins et al 1995;Brown 1996;McCravy et al 2001). The high efficacy of the tebufenozide treatment meant that relatively few larvae were reared from treated blocks.…”

Section: Discussionmentioning

confidence: 95%

Control of Epiphyas postvittana (lightbrown apple moth Lepidoptera Tortricidae) on grapevines with tebufenozide

Lo¹,

Newman²,

Cole³

et al. 2014

NZPP

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Feeding by leafroller larvae damages grape bunches and makes them susceptible to Botrytis cinerea disease Leafroller infestation of foliage and bunches and the incidence of botrytis was measured on vineyards in Gisborne Hawkes Bay and Marlborough over 2 years Fortyfour blocks received no leafrolleractive insecticides while 22 were sprayed once preflowering with the selective insect growth regulator tebufenozide Tebufenozide very effectively reduced infestations and gave seasonlong control On leaves untreated blocks averaged 14 leafrollers/search compared with 4 on sprayed blocks Comparative figures for fruit at harvest were 18/100 bunches and 3/100 respectively There was a trend for lower botrytis incidence in blocks where tebufenozide was used Over 99 of the leafrollers reared were Epiphyas postvittana Parasitism of larvae and pupae at 67 on leaves and 50 in bunches was similar in untreated and treated blocks Epiphyas postvittana in vineyards is easily managed using tebufenozide which did not compromise biological control

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“…The advantage of tebufenozide over taufluvalinate is target specificity, allowing survival of natural enemies in the orchard. Previous studies have found a high level of activity against Lepidoptera and low toxicity to pest natural enemies including predatory mites (Tomkins et al 1995). Similarly, abamectin does not disrupt activity of beneficial insects when used at appropriate times (Babu 1988).…”

Section: Discussionmentioning

confidence: 95%

Control of leafrollers in avocados

Brookbanks¹

1998

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Brownheaded leafrollers Ctenopseustis obliquana and C. herana can cause significant damage to young avocado fruitlets and terminal shoots. Field trials were performed in 1996/97 and 1997/98 on avocado trees to evaluate leafroller control with tebufenozide, taufluvalinate, Bacillus thuringiensis var. kurstaki (Btk) and abamectin. Leafroller levels were assessed on leaves and fruit. The most effective treatments were tebufenozide, taufluvalinate and abamectin.

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Effect of tebufenozide on, <i>Encarsia citrina,</i> an armoured scale parasitoid

Cited by 4 publications

References 0 publications

Effect of insecticides on immature and mature stages of <i>Encarsia citrina</i>, an armoured scale parasitoid

Effect of insecticides on immature and mature stages of <i>Encarsia citrina</i>, an armoured scale parasitoid

Control of <i>Epiphyas postvittana</i> (lightbrown apple moth Lepidoptera Tortricidae) on grapevines with tebufenozide

Control of leafrollers in avocados

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