scholarly journals Improved Monitoring of Grapholita molesta (Lepidoptera: Tortricidae) in Stone Fruit Orchards with a Pheromone-Kairomone Combination Lure

Insects ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 412
Author(s):  
Michele Preti ◽  
Alan L. Knight ◽  
Sergio Angeli
Keyword(s):  
Sex Pheromone ◽  
Sex Pheromones ◽  
Mating Disruption ◽  
Cydia Pomonella ◽  
Management Strategies ◽  
Oriental Fruit Moth ◽  
Grapholita Molesta ◽  
Baited Traps ◽  
By Catch ◽  
Fruit Orchards

Monitoring oriental fruit moth Grapholita molesta Busck (Lepidoptera: Tortricidae), populations based on counts in sex pheromone-baited traps within sex pheromone-treated orchards for mating disruption (MD) is challenging since male orientation to traps is disrupted. In this study, we evaluated a new commercial pheromone–kairomone combination lure for G. molesta (Pherocon® OFM Combo™ Dual™), which combines the G. molesta and Cydia pomonella L. sex pheromones with a blend of acetic acid and terpinyl acetate. Trap comparisons were performed in 33 trials in peach and nectarine orchards under MD (24) or non-MD (9) during the 2018–2019 period in Italy. Male and total moth captures in traps baited with the combination lure were significantly greater than in traps with G. molesta pheromone in both years and across both pheromone treatments. The proportion of females in the total moth captures using the combination lure averaged ca. 7% across all trials. The by-catch of non-targets, i.e., Apis mellifera L., was low in traps baited either with the combination and the sex pheromone lure, while trap color (white) affected the capture of beneficials but not of the target pest. Our study proves that this combination lure can improve the monitoring and management for G. molesta in stone fruits. New studies are needed to define action thresholds to trigger supplemental control methods to MD. Secondly, female-based monitoring lures should be further developed to improve management strategies.

scholarly journals MATING DISRUPTION OF GRAPHOLITA MOLESTA BUSCK. TO IMPROVE QUALITY AND HEALTHY OF PEACH FRUITS

2021 ◽  
Vol 37 (37) ◽  
pp. 78-82
Author(s):  
Plamen Ivanov ◽  
◽  
Desislava Stefanova ◽  
Keyword(s):  
Sex Pheromones ◽  
Mating Disruption ◽  
Environmental Control ◽  
Plant Protection ◽  
Oriental Fruit Moth ◽  
Grapholita Molesta ◽  
Insecticide Treatment ◽  
Chemical Treatments ◽  
Fruit Growing ◽  
Peach Orchard

In Bulgarian fruit growing agriculture mainly chemical plant protection is applied. Applications with organophosphates and pyrethroids are carried out to control the economically most important peach pest - the oriental fruit moth (Grapholita molesta Busck.). Annually during the vegetation season 7-8 insecticide treatments are applied. This leads to contamination of fruit products and the environment, which is a prerequisite for seeking other approaches. Regarding to fruit moth, sex pheromones are one of the most widely used environmental control methods, but they are most commonly used in apples. Their introduction in the monitoring of the main peach pest can lead to a reduction of chemical treatments and production with less pesticide residues. A promising direction is the use of pheromones to control the pests through sexual disorientation of males. The trial of mating disruption in the present study were carried out with ISOMATE® OFM TT dispensers in 0.9 ha peach orchard in 2020 and 2021. Pheromone traps type "Delta" of the Hungarian company CSALOMON® were used. The ISOMATE OFM TT dispensers, installed before the first flight of OFM at the rate of 250 units per ha, efficiently reduced fruit damages - down to 0.1-0.2% at harvest. In the reference orchard with 6 insecticide treatment against OFM, the damages reached 3.0-3.6%. The results indicate that mating disruption for control of Grapholita molesta Busck. can be used in production of quality and healthy peach fruits.

scholarly journals Similar worldwide patterns in the sex pheromone signal and response in the oriental fruit moth, Grapholita molesta (Lepidoptera: Tortricidae)

2014 ◽  
Vol 105 (1) ◽  
pp. 23-31 ◽  
Author(s):  
A.L. Knight ◽  
W. Barros-Parada ◽  
D. Bosch ◽  
L.A. Escudero-Colomar ◽  
E. Fuentes-Contreras ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Flight Tunnel ◽  
Oriental Fruit Moth ◽  
Pome Fruit ◽  
Grapholita Molesta ◽  
Male Moth ◽  
Laboratory Populations ◽  
Fruit Orchards ◽  
High Level ◽  
Blend Ratios

AbstractThe response of Grapholita molesta (Busck) males to three-component sex pheromone blends containing a 100% ratio of the major sex pheromone component, (Z)-8-dodecenyl acetate and a 10% ratio of (Z)-8-dodecenol, but with varying ratios of (E)-8-dodecenyl acetate (0.4, 5.4, 10.4, 30.4, and 100.1% E-blends) was tested with populations in eight stone and pome fruit orchards in Europe, Asia, and North and South America. Traps baited with the 5.4% E-blend caught significantly more males than traps with any other blend with all populations. Significantly more males were caught in traps baited with the 10.4% E-blend than in traps with the remaining blends, except with the 0.4% E-blend in Turkey. Significant differences in male moth catches occurred between the other blends with the 0.4>30.4% E-blend, and the 30.4>100.1% E-blend. Male moth catches with the 100.1% E-blend only differed from the hexane control in Chile. No apparent differences were noted to these blends in populations collected from pome or stone fruits. Flight tunnel assays to synthetic blends with a subset of populations were similar to the field results, but the breadth of the most attractive E-blends was wider. Flight tunnel assays also demonstrated a high level of male–female cross-attraction among field-collected populations. Female gland extracts from field-collected populations did not show any significant variation in their three-component blends. The only exceptions in these assays were that long-term laboratory populations were less responsive and attractive, and produced different blend ratios of the two minor components than recently collected field populations.

scholarly journals Development of 2-phenylethanol plus acetic acid lures to monitor obliquebanded leafroller (Lepidoptera: Tortricidae) under mating disruption

2016 ◽  
Author(s):  
A. L. Knight ◽  
G. J. R. Judd ◽  
E. Basoalto ◽  
A. M. El-Sayed
Keyword(s):  
Acetic Acid ◽  
Sex Pheromone ◽  
Mating Disruption ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Choristoneura Rosaceana ◽  
Obliquebanded Leafroller ◽  
Baited Traps ◽  
Bisexual Lure ◽  
Pheromone Dispensers

AbstractWe evaluated the effectiveness of 2-phenylethanol (PET) in combination with acetic acid (AA) as a binary lure for monitoring male and female obliquebanded leafroller, Choristoneura rosaceana (Harris). Studies were conducted in apple, Malus domestica Borkhausen, orchards treated with or without sex pheromone dispensers for mating disruption (MD). Open polypropylene vials, closed membrane cups, and rubber septa loaded with AA and/or PET in varying amounts were first evaluated in a series of trapping experiments. Membrane cups loaded with 800 mg of PET were as effective as 10-mg septa, but longer lasting, and were comparable to the open vials. A membrane cup AA lure was effective in tests, but further work is needed to increase its release rate and extend its activity. Catches of codling moth, Cydia pomonella (L.), and C. rosaceana were unaffected by combining PET with (E,E)-8,10-dodecadien-1-ol, the sex pheromone of codling moth, pear ester, (E,Z)-2,4-ethyl-decadienoate, and AA lures. Adding (E)-4,8-dimethyl-1,3,7-nonatriene to this blend to enhance codling moth catch, significantly reduced catches of C. rosaceana. PET+AA was a more attractive binary lure than AA plus phenylacetonitrile (PAN) for C. rosaceana. The addition of PET or PAN to traps already baited with the sex pheromone of C. rosaceana significantly reduced male catches. Traps baited with PET+AA placed in blocks not treated with MD caught significantly fewer C. rosaceana than traps baited with sex pheromone. In comparison, sex pheromone-baited traps in MD blocks caught ≤ 1 male moth per season which was significantly lower than total moth (> 10) or female moth (≥ 3) catch in these blocks with PET+AA. A high proportion (> 70%) of trapped females were mated in both untreated and MD-treated orchards. Further refinement of this binary, bisexual lure using membrane cup technology may allow the establishment of action thresholds and improve management timings for C. rosaceana.

scholarly journals Factors Influencing Field Monitoring of the Oriental Fruit Moth, Grapholita molesta, with Sex Pheromone

2007 ◽  
Vol 46 (3) ◽  
pp. 349-356
Author(s):  
Yong-Gyun Kim ◽  
Sung-Chae Jung ◽  
Sung-Woo Bae ◽  
Bo-Won Kwon ◽  
Hyang-Mi Yoon ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Field Monitoring ◽  
Oriental Fruit Moth ◽  
Grapholita Molesta ◽  
Factors Influencing

scholarly journals Selectivity of the oriental fruit moth sex pheromone trap in peach and apricot orchards

2010 ◽  
Vol 16 (2) ◽  
Author(s):  
K. Hári ◽  
B. Pénzes
Keyword(s):  
Sex Pheromone ◽  
Chemical Control ◽  
Pheromone Trap ◽  
External Morphology ◽  
Oriental Fruit Moth ◽  
Pheromone Traps ◽  
Sex Pheromone Traps ◽  
Fruit Orchards ◽  
Trap Catches ◽  
Male Genital

One of the most important pests of the stone fruit orchards is the oriental fruit moth (Grapholitha 1110/esta B.). Chemical control targeted against the young larvae is the most effective way of protection. so the ti ming of treatments has to be based on the observation of emergence. Emergence may be monitored with sex pheromone traps. It is already known from former publications, that the traps for oriental fruit moth are also effective in the case of the plum moth (Grapholitha f1111ebra11a Tr.), which external morphology is very similar to the oriental fruit moth. As the emergence of the oriental fruit moth in peach and apricot orchards has not been observed in detaib in Hungary, we started a s1Udy in this field. Our aim was to measure the selectivity of the sex pheromone traps. On the basis of examining more than 5000 males caught and the investigation of male genital ia. it could be established that the pheromone traps. Csalomon and Deltastop, for oriental fruit moth, caught the plum moth in the same ratio. The ratio of the oriental fruit moth and the plum moth trapped in the peach orchards was I: I . while in the apricot orchards the number of the caught plum moth males was seven times as many as that of the oriental fruit moths. Consequently, it can be established that data based on oriental fruit moth trap catches can not be used without additional investigations of genitalia for the prediction of larval hatch. The selectivity of the plum moth trap. used as a control. was acceptable in both orchards.

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