Occurrence of Grapholita molesta (Lepidoptera: Tortricidae) in major apple-growing areas of southern Quebec

2007 ◽  
Vol 139 (2) ◽  
pp. 292-295 ◽  
Author(s):  
Sylvie Bellerose ◽  
Gérald Chouinard ◽  
Michèle Roy

AbstractOriental fruit moth (Grapholita molesta (Busck) (Lepidoptera: Tortricidae)) adult males were captured by pheromone traps in 10 of 24 orchards monitored in southern Quebec from 2003 to 2005. Twelve, 22, and 133 oriental fruit moths were captured in 2003, 2004, and 2005, respectively. One oriental fruit moth larva was collected in each of two orchards in 2004. This is the first record of this species in Quebec apple orchards.

2007 ◽  
Vol 87 (3) ◽  
pp. 131-134 ◽  
Author(s):  
Gérald Chouinard ◽  
Sylvie Bellerose ◽  
Michèle Roy ◽  
Charles Vincent

Abstract Adult males and larvae of sesiids were monitored in ten (1989–1991), five (2000) and two (2004) Quebec apple orchards. Multi Pher III traps baited with 99.1% Z, Z-3, 13-octadecadienyl acetate and 0.9% Z, E plus E, Z-3, 13-octadecadienyl acetate were used for adults, and trunk sampling was used for larvae. Synanthedon scitula, S. pyri, Podosesia syringae, S. acerrubri, S. fulvipes, S. exitiosa, S. acerni and Sesia tibialis males were captured between 1989 and 1991. Only 5 of the 347 adults of the S. scitula/pyri complex captured in 2000 belonged to S. pyri.


2016 ◽  
Vol 69 ◽  
pp. 133-137
Author(s):  
P.L. Lo ◽  
J.T.S. Walker

Grapholita molesta (Oriental Fruit Moth OFM) primarily infests stonefruit but overseas it has adapted to pipfruit and become a major pest of apples and pears in some places The objective of this study was to determine the prevalence of OFM in New Zealand apple orchards Pheromone trapping was conducted in five apple growing regions in 201415 and repeated in Hawkes Bay and Nelson in 201516 No OFM was found in Gisborne (three orchards) Nelson (six) or Central Otago (seven) but it was recorded on one of six Waikato orchards In Hawkes Bay OFM occurred on 23/36 orchards although on 15 properties le;7 moths/trap/year were caught However traps in two orchards caught over 100 moths/year The few OFM collected on some orchards may have been strays from nearby stonefruit orchards but the high numbers in these two apple orchard blocks suggested the populations were established The implications of OFM becoming an apple pest or reaching the South Island are discussed


2015 ◽  
Vol 106 (1) ◽  
pp. 135-140 ◽  
Author(s):  
X.-F. Yang ◽  
F. Fan ◽  
C. Wang ◽  
G.-S. Wei

AbstractThe Oriental fruit moth, Grapholita molesta (Lepidoptera: Tortricidae), is a major pest of tree fruits worldwide, and the diapausing larvae overwinter in cryptic habitats. Investigations of overwintering G. molesta were conducted in adjacent peach, pear and apple orchards in Northern China over three consecutive winters to determine the overwintering site and habitat preferences of the moth. Counts of overwintering larvae in the different orchards demonstrated that the late-maturing peach orchard (‘Shenzhou honey peach’) was the most preferred overwintering habitat with more than 90% of the collected larvae. Larvae were more abundant in host trees, and they very rarely overwintered in the soil. The overwintering site preferences on the host trees were significantly different; over 50% larvae were located in the tree trunks, and followed by main branches. Most of the G. molesta overwintered on the sunny side of the host trees at or below 60 cm from the ground; a few were cocooned on the shaded sides of the trees or greater than 60 cm from the ground. G. molesta began overwintering between August and October, mid- to late September was the peak period for entering winter diapause during 2011–2013 (77.78, 67.59 and 71.15%, respectively). Our findings improve understanding of the orchard habitat and overwintering site preferences of G. molesta and would be useful in the development of efficient forecasting and pest-management strategies for orchards during the winter and early spring.


2021 ◽  
Author(s):  
Alex Il'ichev

Abstract G. molesta is a serious pest of economic importance of commercial stone and pome fruits around the world. G. molesta damages peaches, nectarines, plums, cherries, apricots, apples, pears, quinces and nashi (Asian pears) and can also attack and cause economic damage on other commercial fruits. In severe attacks, young trees can suffer distortion of growing shoots and stems, which makes pruning, training and shaping the tree canopy difficult, particularly for close-planting industrial systems such as Tatura trellis. One larva can damage many shoots by tunnelling deep into young shoot tips. Larvae move to feed on the green fruits usually after shoots mature and harden. One larva can damage many fruits, particularly when fruits are located close to each other.


2011 ◽  
Vol 64 ◽  
pp. 215-221 ◽  
Author(s):  
J.T.S. Walker ◽  
D.J. Rogers ◽  
P.L. Lo ◽  
D.M. Suckling ◽  
A.M. El-Sayed ◽  
...  

Leafrollers are important pests of apples and infested fruit can result in rejection of export consignments Leafroller mating disruption using a pheromone blend with activity against three species was examined in 12 Hawkes Bay orchards over two seasons (200910 and 201011) Pheromone dispensers (600/ha) and a single insecticide were applied to trees in early November and subsequent insecticide use was based on leafroller pheromone trapping and thresholds The pheromone blend substantially suppressed mating of virgin female lightbrown apple moth in treated orchards and reduced male catch in pheromone traps by up to 98 compared with the season prior to implementation Insecticide use for leafroller control decreased accordingly from 2127 insecticides per block in 2008/09 to 1018 in 2010/11 Leafroller control using mating disruption was acceptable fruit damage varied from 03 to 016 and no leafroller larvae were found on fruit in both field assessments and phytosanitary inspections of packed cartons


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