Life-History and Ecology of the Plum Curculio, Conotrachelus nenuphar (Hbst.) (Coleoptera: Curculionidae), in the Niagara Peninsula, Ontario

1958 ◽  
Vol 90 (1) ◽  
pp. 8-17 ◽  
Author(s):  
Thomas Armstrong

The plum curculio, Contrachelus nenuphar (Hbst.), always a serious pest of stone fruits in thc Niagara Peninsula, Ontario, has increased in importance since 1946, especially in peach orchards. A five-year study of its life-history, ecology, and control was started in 1950 at Vineland Station. This paper deals with the biological phases of the investigation.

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Timothy P Lampasona ◽  
Cesar Rodriguez-Saona ◽  
Tracy C Leskey ◽  
Anne L Nielsen

Abstract The plum curculio, Conotrachelus nenuphar Herbst (Coleoptera: Curculionidae), is an insect native to the Americas that is a serious pest of stone and pome fruits in the United States and Canada. Failure to effectively manage this insect may result in up to 85% damaged fruit at harvest, as well as early season fruit abortion. Conotrachelus nenuphar is oligophagous, feeding and ovipositing on many Rosaceous plants, including apple, peach, plum, cherry, quince, and pear. Additionally, C. nenuphar in limited geographic ranges utilizes alternate hosts such as highbush blueberry (Ericaceae) and Muscadine grape (Vitaceae). Despite its long history as a pest, integrated pest management (IPM) lags behind similarly damaging native fruit pests. Although significant progress has been made on the identification of attractive lures for monitoring C. nenuphar adults, development of behaviorally based management strategies, and biological control with entomopathogenic nematodes, growers continue to rely heavily on top-down chemical inputs to manage this pest. Most of the research to date comes from studies done in apples where alternative management practices for C. nenuphar have, to some extent, been adopted; however, less IPM-based information is available for other susceptible crops. In this review, we summarize the history, biology, ecology, behavior, and control of C. nenuphar and future directions for IPM research.


Plant Disease ◽  
2003 ◽  
Vol 87 (6) ◽  
pp. 699-706 ◽  
Author(s):  
Z. Lan ◽  
H. Scherm ◽  
D. L. Horton

Risks to peach production from scab (caused by Cladosporium carpophilum) and plum curculio (Conotrachelus nenuphar), two key pests in the southeastern United States, are high until 2 months past petal fall and then decreases during midseason. This suggests that reduced-input pesticide strategies may effectively control both pests during the latter period. In this study, we evaluated midseason pesticide applications according to an alternate-row middle (ARM) spray program in which sprays were applied only to every other tree row while reducing tractor speed and keeping application intervals unchanged relative to conventional spraying of both sides of the trees. In a 2-year trial in a research orchard, conventional sprays of fungicide (primarily sulfur) and insecticide (primarily phosmet) were applied at 10- to 14-day intervals until first cover, followed by continued conventional sprays of fungicide and insecticide (standard), conventional sprays of one pesticide together with ARM sprays of the other pesticide, or combined ARM sprays of both pesticides. Schedules with midseason ARM sprays of both pesticides also were evaluated in two commercial orchards in 2 years. In all experiments, plots receiving combined ARM sprays were equivalent to the standard in fruit quality and control of scab and plum curculio. Combined ARM spraying resulted in lower environmental nontarget effects (as estimated by the Environmental Impact Quotient) and reduced application time by 25 to 33% for each midseason spray and 12.5 to 18.5% for the entire period from petal fall to the preharvest interval.


Insects ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 113 ◽  
Author(s):  
Cesar Rodriguez-Saona ◽  
Anne Nielsen ◽  
David Shapiro-Ilan ◽  
Sunil Tewari ◽  
Vera Kyryczenko-Roth ◽  
...  

This 2-year study (2013–2014) assessed the efficacy of an odor-baited “trap bush” approach to aggregate plum curculio, Conotrachelus nenuphar, adult injury, i.e., number of oviposition-scared fruit, in four commercial highbush blueberry farms in New Jersey (USA). In each farm, we compared fruit injury in bushes baited with grandisoic acid and benzaldehyde along the perimeter of trap-bush plots versus unbaited bushes in control plots. We also measured the amount of fruit injury in neighboring bushes (i.e., spillover effect) and in the plots’ interior. In both years, the amount of fruit injury by C. nenuphar adults was greater on and near odor-baited bushes in trap-bush plots compared with those on and near unbaited bushes in control plots, indicative of aggregation. Injury in unbaited bushes neighboring trap bushes was often greater than unbaited bushes in control plots, providing some evidence for a spillover effect. However, no difference in fruit injury was found between interior trap-bush and control plots. Therefore, odor-baited trap bushes can be used in blueberries to manipulate C. nenuphar foraging behavior, i.e., aggregate adults, without compromising injury in field interiors. Under this approach, insecticides could then be targeted at only a few (perimeter-row) bushes within fields rather than entire fields.


1954 ◽  
Vol 47 (1) ◽  
pp. 181-182
Author(s):  
John T. Tattershall ◽  
Ralph H. Davidson
Keyword(s):  

1973 ◽  
Vol 66 (6) ◽  
pp. 1290-1292 ◽  
Author(s):  
M. L. Bobb ◽  
J. A. Weidhaas ◽  
L. F. Ponton

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