Journal of Economic Entomology (2005) 98, 1630-1640

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Dario E. Fernandez, E.H. Beers, J.F. Brunner, M.D. Doerr and J.E. Dunley (2005)
Effects of seasonal mineral oil applications on the pest and natural enemy complexes of apple
Journal of Economic Entomology 98 (5), 1630-1640
Abstract: This 3-yr study examined the use of two different apple, Malus domestica Borkhausen, pest management programs based on horticultural mineral oil. Whereas oil provided some additional control of codling moth, Cydia pomonella (L.), when targeting eggs of both generations (Oil/Direct Pest program, typically six applications per season), the additional benefit was difficult to detect when densities were high. With moderate densities, oil reduced the number of fruit infestations, but not stings (unsuccessful entries). There also were some measurable benefits to leafroller, Pandemis pyrusana Kearfott control. Oil was most useful, however, in suppression of secondary pests. White apple leafhopper, Typhlocyba pomaria McAtee, was the primary target of oil applications in the Oil/Indirect Pest program (typically three applications per season). However, leafhopper suppression in the Oil/Direct Pest program was generally greater because of the higher number of applications. Phytophagous tetranychid and eriophyid mites also were suppressed by more oil applications. Predatory mite populations were lower in both oil programs than in the check, but it is difficult to determine whether direct toxicity or reduction of prey was responsible for lower predator populations. There also was some evidence that oil suppressed woolly apple aphid, Eriosoma lanigerum Hausman. The six-spray oil program largely prevented a woolly apple aphid outbreak that occurred in July and August 1998 in the check, although the three-spray program seemed to provide some suppression despite the nonspecific spray timing.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Elizabeth H. Beers, Jay F. Brunner, Michael D. Doerr

Research topic(s) for pests/diseases/weeds:
control - general
health/environmental effects of pesticides


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Cydia pomonella Apple (Malus)
Typhlocyba pomaria Apple (Malus)
Eriosoma lanigerum Apple (Malus)
Pandemis pyrusana Apple (Malus)