scholarly journals Trap Response and Fruit Damage by Obliquebanded Leafroller (Lepidoptera: Tortricidae) in Pheromone-Treated Apple Orchards in New York

1996 ◽  
Vol 25 (2) ◽  
pp. 268-282 ◽  
Author(s):  
Arthur M. Agnello ◽  
W. Harvey Reissig ◽  
Steve M. Spangler ◽  
Ralph E. Charlton ◽  
David P. Kain
Keyword(s):  
New York ◽  
Apple Orchards ◽  
Obliquebanded Leafroller ◽  
Fruit Damage ◽  
Treated Apple

Response of Tortricid Moths and Non-Target Insects to PheromoneTrap Color in Commercial Apple Orchards

2009 ◽  
Vol 44 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Clayton T. Myers ◽  
Grzegorz Krawczyk ◽  
Arthur M. Agnello
Keyword(s):  
New York ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Oriental Fruit Moth ◽  
Choristoneura Rosaceana ◽  
Pest Species ◽  
Apple Orchards ◽  
Eastern United States ◽  
Obliquebanded Leafroller ◽  
Tufted Apple Bud Moth

Pheromone traps are a widely-used tool for monitoring pest activity in commercial apple orchards. Studies were conducted to evaluate delta-style traps painted with different colors (orange, red, yellow, green, blue, and white) for capture of obliquebanded leafroller, Choristoneura rosaceana (Harris), and oriental fruit moth, Grapholita molesta (Busck), as well as nontarget muscoid flies (Diptera: Muscidae) and honeybees, Apis mellifera L. An additional study evaluated plastic, four-sided LepTrap® traps of various colors in comparison with a standard delta trap for capture of obliquebanded leafroller, oriental fruit moth, tufted apple bud moth (Platynota idaeusalis (Walker)), and codling moth (Cydia pomonella L.). Capture of obliquebanded leafroller and oriental fruit moth was not significantly affected by trap color. Capture of nontarget flies and honeybees tended to be higher in blue and white (both painted and unpainted) delta-style traps in New York apple orchards, although there was some variability in this response by orchard site. There were no differences in capture of 4 pest species in Pennsylvania between colored, plastic LepTrap® traps and standard unpainted white delta-style traps. Given the observed differences in nontarget capture and the improved efficiencies of finding traps placed within tree canopies, we recommend using yellow, red, or orange delta traps for monitoring of obliquebanded leafroller, oriental fruit moth, and tufted apple bud moth in apple production areas in the eastern United States.

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

Exclusion netting may alter reproduction of the codling moth (Cydia pomonella) and prevent associated fruit damage to apple orchards

2012 ◽  
Vol 145 (2) ◽  
pp. 134-142 ◽  
Author(s):  
Benoit Sauphanor ◽  
Guilhem Severac ◽  
Sandrine Maugin ◽  
Jean François Toubon ◽  
Yvan Capowiez
Keyword(s):  
Cydia Pomonella ◽  
Codling Moth ◽  
Apple Orchards ◽  
Fruit Damage

scholarly journals Effect of Water Conditioners and Surfactants on Vegetative Growth Control and Fruit Cracking of `Empire' Apple Caused by Prohexadione-calcium

HortScience ◽  
2003 ◽  
Vol 38 (6) ◽  
pp. 1205-1209 ◽  
Author(s):  
J.R. Schupp ◽  
T.L. Robinson ◽  
W.P. Cowgill ◽  
J.M. Compton
Keyword(s):  
New York ◽  
Fruit Size ◽  
Growth Control ◽  
Hard Water ◽  
Growth Reduction ◽  
Fruit Cracking ◽  
Fruit Damage ◽  
Postharvest Rot ◽  
Prohexadione Calcium ◽  
Effective Water

Three experiments were conducted on `Empire' apple (Malus ×domestica Borkh.) to evaluate the effects of hard water, calcium chloride (CaCl2), water conditioners, surfactants, and captan fungicide on the growth reduction and fruit cracking caused by prohexadione-calcium (PC). Two applications of 63 mg·L-1 PC provided season-long growth control in two studies. Adding a water conditioner to PC reduced shoot growth more than an application of PC in hard or soft water in one New York study. Ammonium sulfate (AMS) and Choice were equally effective water conditioners. PC provided no growth control of water sprouts and had no effect on fruit set or yield. PC applied at 250 mg·L-1 reduced fruit size. `Empire' fruit cracking and corking was severe, despite the use of only 63 mg·L-1 PC in two of the three experiments. This damage was exacerbated by the addition of a water conditioner, however AMS applied with a surfactant but without PC had little or no effect on either the severity or extent of fruit injury. In a third experiment, the addition of surfactants, CaCl2, or captan to 250 mg·L-1 PC plus a water conditioner had no effect on the severity of fruit damage. Fruit cracking caused by PC increased preharvest drop in two of three experiments, and increased postharvest rot in the Geneva, N.Y., experiment where fruit were stored prior to grading. Application of PC plus a water conditioner reduced estimated gross return per hectare for `Empire. We conclude that the fruit injury is caused by the formulated PC product itself under certain environmental conditions, and that this product should not be used on `Empire. Chemical name used: calcium 3-oxido-4-proprionyl-5-oxo-3-cyclohexine-carboxylate [prohexadione-calcium (PC)].

scholarly journals Multi-site Thinning Comparisons with `Empire' and `McIntosh' Apples

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 524C-524
Author(s):  
Alan N. Lakso ◽  
Terence L. Robinson ◽  
Eddie W. Stover ◽  
Warren C. Stiles ◽  
Stephen Hoying ◽  
...  
Keyword(s):  
New York ◽  
New York State ◽  
Fruit Size ◽  
Apple Orchards ◽  
Physiological Factors ◽  
Crop Load ◽  
York State ◽  
Climatic Regions ◽  
Trial Analysis ◽  
Fruit Stage

Many chemical, environmental, and physiological factors have been reported to be important to apple chemical thinning, so we have been developing a multi-site and multi-year database of chemical thinning results and potentially important factors. For 3 years, we have conducted replicated thinning trials in `Empire' and `McIntosh' apple orchards at six or seven sites around New York state in different climatic regions. Different concentrations of NAA and Accel (primarily benzyladenine), NAA/carbaryl and Accel/carbaryl combinations and unthinned controls were tested with treatments applied at the 10-mm king fruit stage by airblast sprayers. Flower cluster counts, set counts, yields, fruit sizes, and other factors thought important to thinning response (orchard condition/history, weather, application conditions, etc.) were measured or estimated in each trial. Analysis of factor importance is continuing, but some general results have come from the thinning trials so far. Thinning effectiveness varied among years from poor to adequate. There have not been consistent thinner concentration responses. Commercial NAA and Accel concentrations have not thinned adequately. NAA/carbaryl and Accel/carbaryl have thinned the most. For the same crop load, trees thinned with Accel or the carbaryl combination have had better fruit size than when thinned with NAA.

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