scholarly journals Occurrence of oriental fruit moth (Grapholita molesta) in apple orchards in New Zealand

2016 ◽  
Vol 69 ◽  
pp. 133-137
Author(s):  
P.L. Lo ◽  
J.T.S. Walker
Keyword(s):  
New Zealand ◽  
Apple Orchard ◽  
Oriental Fruit Moth ◽  
Apple Orchards ◽  
The South ◽  
Grapholita Molesta ◽  
Pheromone Trapping ◽  
Major Pest

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

scholarly journals Use of mating disruption for control of New Zealand leafrollers in apple orchards

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 ◽  
...  
Keyword(s):  
New Zealand ◽  
Mating Disruption ◽  
Virgin Female ◽  
Pheromone Traps ◽  
Apple Orchards ◽  
Pheromone Trapping ◽  
Fruit Damage ◽  
Lightbrown Apple Moth ◽  
Pheromone Dispensers ◽  
Pheromone Blend

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

RANGE OF THE ORIENTAL FRUIT MOTH, GRAPHOLITHA MOLESTA, IN APPLES AND PEACHES IN ONTARIO

1967 ◽  
Vol 99 (6) ◽  
pp. 587-590 ◽  
Author(s):  
G. G. Dustan
Keyword(s):  
Low Temperatures ◽  
First Generation ◽  
Apple Orchard ◽  
Oriental Fruit Moth ◽  
Winter Mortality ◽  
Apple Orchards ◽  
Grapholitha Molesta ◽  
Peach Orchard

AbstractSurveys in unsprayed apple orchards indicated that the oriental fruit moth, whose principal hosts are peach and apple, does not occur in continuing populations on apple beyond the range of commercial peach orchards in Ontario. Moths released in an apple orchard 25 mi from the nearest peach orchard did not result in an infestation after the first winter. High winter mortality due to low temperatures and the unsuitability of apple for the first generation of the moth probably are the main reasons it does not establish continuing infestation on apple alone.

scholarly journals Impact of pheromone mating disruption and pesticides on oriental fruit moth (Grapholita molesta) on peaches

2007 ◽  
Vol 60 ◽  
pp. 67-71
Author(s):  
P.L. Lo ◽  
L.M. Cole
Keyword(s):  
New Zealand ◽  
Mating Disruption ◽  
Acceptable Level ◽  
Oriental Fruit Moth ◽  
Fresh Market ◽  
Grapholita Molesta ◽  
Important Pest ◽  
Fruit Damage ◽  
The Cost ◽  
Pheromone Dispensers

Oriental fruit moth (OFM) is an important pest of summerfruit grown for both fresh market and processing in Hawkes Bay New Zealand Mating disruption was applied over three consecutive years on the same three cv Golden Queen peach orchards At each orchard plots of 0535 ha were treated with pheromone dispensers either alone or supplemented with insecticides In year one OFM populations were high and mating disruption or 12 insecticide applications did not provide sufficient control with up to 3 damage at harvest The following year all trial areas received pheromone dispensers plus one or two insecticide applications and fruit damage was at acceptable level of less than 1 In year three blocks with mating disruption alone averaged 02 OFM infestation compared with 09 where no OFM control was used OFM mating disruption is now increasingly being adopted by growers but the cost relative to insecticides is a barrier

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
Keyword(s):  
First Record ◽  
Oriental Fruit Moth ◽  
Pheromone Traps ◽  
Apple Orchards ◽  
Adult Males ◽  
Grapholita Molesta ◽  
Moth Larva

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.

Where does Grapholita molesta (Busck) (Lepidoptera: Tortricidae) overwinter in adjacent peach, pear and apple orchards?

2015 ◽  
Vol 106 (1) ◽  
pp. 135-140 ◽  
Author(s):  
X.-F. Yang ◽  
F. Fan ◽  
C. Wang ◽  
G.-S. Wei
Keyword(s):  
Habitat Preferences ◽  
Management Strategies ◽  
Northern China ◽  
Oriental Fruit Moth ◽  
Apple Orchards ◽  
Grapholita Molesta ◽  
Peak Period ◽  
Site Preferences ◽  
Host Trees ◽  
Overwintering Site

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.

scholarly journals Neonectria ditissima spore release and availability in New Zealand apple orchards

2017 ◽  
Vol 70 ◽  
pp. 78-86 ◽  
Author(s):  
N.T. Amponsah ◽  
M. Walter ◽  
R.W.A. Scheper ◽  
R.M. Beresford
Keyword(s):  
New Zealand ◽  
Apple Orchard ◽  
Causal Agent ◽  
Monthly Rainfall ◽  
Apple Orchards ◽  
Coated Glass ◽  
Glass Slides ◽  
Spore Release ◽  
Ascospore Release ◽  
Rainy Days

Conidia and ascospore release of Neonectria ditissima, the causal agent of European canker, was investigated using rainwater traps and Vaseline®-coated glass slides in the Tasman region, New Zealand. Trapping of spores was carried out from May 2013 to June 2015 in three separate apple orchard blocks planted with ‘Scifresh’/Jazzâ„¢, ‘Royal Gala’ and ‘Braeburn’, respectively. Conidia and ascospores were both produced at any time of the year when rainfall occurred. The numbers of both conidia and ascospores trapped peaked in April—May, but were produced throughout the year. There was a trend for lower spore numbers with increasing number of non-rainy days prior to rainy event 2mm, while more spores were trapped under frequent rainfall conditions. There was a significant correlation between mean conidia trapped and total monthly rainfall in all three orchards, but ascospore numbers were significantly correlated with rainfall on glass slides only in the ‘Braeburn’ orchard.

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