Parasitoid guild and parasitism rate of the obliquebanded leafroller in IPM orchards and adjacent woodlands

2018 ◽  
Vol 98 (1) ◽  
pp. 36-45
Author(s):  
Jacinthe Tremblay ◽  
Paula Cabrera ◽  
Daniel Cormier ◽  
Jacques Brodeur ◽  
Éric Lucas
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Late Summer ◽  
Early Summer ◽  
Management Program ◽  
Choristoneura Rosaceana ◽  
Parasitism Rate ◽  
Obliquebanded Leafroller ◽  
Parasitism Rates ◽  
Parasitoid Guild

The obliquebanded leafroller (OBLR), Choristoneura rosaceana (Harris) [Lepidoptera: Tortricidae], a primary pest in Quebec apple orchards, can be naturally parasitized. Knowing that habitats around crop’s peripheries are reservoirs for natural enemies of pests, the objective of the present investigation was to assess parasitism and parasitoid guild composition associated with the OBLR. The two-year study included orchards under integrated pest management, their edges, and adjacent woodlands. Parasitism was assessed using sentinel OBLR larvae and considered spring, early summer and late summer. Parasitism rates between regions with different vegetation composition were not significantly different. The first year, late summer larvae showed higher parasitism in orchards (27%), compared to edges (7%) and woodlands (11%). The following year, larvae exposed in early summer had higher parasitism rate in edges (28%) compared to orchards and woodlands (17% in both zones). Nineteen parasitoid species parasitized sentinel larvae. The tachinid Actia interrupta (Curran), the most abundant species, represented 28 and 62% of species the first and the second year respectively. Our research demonstrates that natural biological regulation of the OBLR is the result of a highly diversified parasitoid guild and this should be taken into account in any Integrated Pest Management program.

scholarly journals Oregon State University's Integrated Pest Management Program for the Oregon Hazelnut Industry

2002 ◽  
Vol 12 (4) ◽  
pp. 623-625 ◽  
Author(s):  
J.L. Olsen
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Insect Pests ◽  
Management Program ◽  
Synthetic Pyrethroids ◽  
Choristoneura Rosaceana ◽  
Insect Growth Regulators ◽  
Aphid Parasitoid ◽  
Pheromone Trapping ◽  
Aphid Control

Oregon State University (OSU) developed an integrated pest management (IPM) program for hazelnut (Corylus avellana.) in the early 1980s, through a USDA grant. Sampling schemes and action thresholds were refined over a period of 4 years for the filbertworm (Cydia latiferreana), filbert aphid (Myzocallis coryli), filbert leafroller (Archips rosanus.), and obliquebanded leafroller (Choristoneura rosaceana), which are the most important insect pests in Oregon hazelnuts. A classical biological approach was employed in the mid-1980s when the filbert aphid parasitoid, Trioxys pallidus, was imported from Europe. Grower survey results for 1981 and 1997 showed that the amount of pesticides applied for filbert aphid control has declined by 93%. The registration of synthetic pyrethroids for filbertworm control and the use of pheromone trapping have reduced the amount of active ingredient applied in the industry by 96%. The annual cost savings to Oregon hazelnut growers due to use of the OSU IPM program are estimated at $0.5 million. Current research focuses on the use of less toxic insecticides, such as insect growth regulators for filbertworm and leafroller control. The most serious hazelnut disease, eastern filbert blight (EFB) caused by the fungus Anisogramma anomala was first reported in the Pacific northwestern U.S. in 1973. It has spread its way through two thirds of the hazelnut acreage. Current OSU IPM recommendations include preventative fungicide sprays in spring, scouting for and cutting out infections, and replacement of the most susceptible cultivars when possible. The long-term approach to EFB control is the development of EFB immune varieties.

Electron investigations of rhabdovirus-like particles in mexican bean beetles and crickets

1978 ◽  
Vol 36 (2) ◽  
pp. 378-379
Author(s):  
J. R. Adams ◽  
G. J Tompkins ◽  
A. M. Heimpel ◽  
E. Dougherty
Keyword(s):  
Biological Control ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Developmental Stages ◽  
Management Program ◽  
Acheta Domesticus ◽  
Epilachna Varivestis ◽  
House Cricket ◽  
Similar Morphology ◽  
Bean Beetle

As part of a continual search for potential pathogens of insects for use in biological control or on an integrated pest management program, two bacilliform virus-like particles (VLP) of similar morphology have been found in the Mexican bean beetle Epilachna varivestis Mulsant and the house cricket, Acheta domesticus (L. ).Tissues of diseased larvae and adults of E. varivestis and all developmental stages of A. domesticus were fixed according to procedures previously described. While the bean beetles displayed no external symptoms, the diseased crickets displayed a twitching and shaking of the metathoracic legs and a lowered rate of activity.Examinations of larvae and adult Mexican bean beetles collected in the field in 1976 and 1977 in Maryland and field collected specimens brought into the lab in the fall and reared through several generations revealed that specimens from each collection contained vesicles in the cytoplasm of the midgut filled with hundreds of these VLP's which were enveloped and measured approximately 16-25 nm x 55-110 nm, the shorter VLP's generally having the greater width (Fig. 1).

scholarly journals Economic Evaluation of Landscape Integrated Pest Management Programs in Banyumas Regency, Central Java, Indonesia

2018 ◽  
Vol 7 (2.29) ◽  
pp. 469
Author(s):  
Hani Perwitasari ◽  
Irham . ◽  
Slamet Hartono ◽  
Suhatmini Hardyastuti
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Production Cost ◽  
Secondary Data ◽  
Management Program ◽  
T Test ◽  
Production Costs ◽  
Central Java ◽  
Financial Feasibility ◽  
Technology Applications

The massive use of chemicals in food production process has adversely affected the aspect of cost, ecology and health in particular. Landscape Integrated Pest Management (LIPM) Program is one of the technology applications targeted to minimize the chemicals. In Indonesia, there were only 6 regencies which applied LIPM, which included Banyumas regency. This study primarily aims at comparing production costs, productivity, revenue, profit and financial feasibility between LIPM and non-LIPM rice farms. The researchers collected primary and secondary data during the investigation. They purposively chose Pliken Village as the research object as it is the only village implementing LIPM. Meanwhile, sample was selected by random sampling methods involving LIPM and non- LIPM farmers with 30 respondents for each. Independent-samples T test was exerted to compare productivity, revenue, cost, profit and financial feasibility. The results indicate that productivity, revenue, profit and financial feasibility farming with LIPM were higher than the non-LIPM farming. Moreover, the production cost in the LIPM farming was lower than the production cost of the non-LIPM farming. The independent T-test pinpoints that the total revenue indicator and profit were significant. In other words, it may become reference to encourage farmers to apply Landscape Integrated Pest Management Program for sustainable agriculture 

scholarly journals Demonstration of an Integrated Pest Management Program for Wheat in Tajikistan

2016 ◽  
Vol 7 (1) ◽  
pp. 11 ◽  
Author(s):  
Douglas A. Landis ◽  
Nurali Saidov ◽  
Anvar Jaliov ◽  
Mustapha El Bouhssini ◽  
Megan Kennelly ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Management Program

IMPACT OF METHAMIDOPHOS AND METHOMYL ON POPULATIONS OF LIRIOMYZA SPECIES (DIPTERA: AGROMYZIDAE) AND ASSOCIATED PARASITES IN CELERY

1983 ◽  
Vol 115 (10) ◽  
pp. 1415-1420 ◽  
Author(s):  
John T. Trumble ◽  
Nick C. Toscano
Keyword(s):  
Species Composition ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Management Program ◽  
Adult Parasite ◽  
Leaf Mining

AbstractMethamidophos proved more suitable than methomyl for incorporation in an integrated pest management program for celery. Methomyl applications resulted in increased leaf mining and greater emergence of Liriomyza species leafminers. Methomyl use also increased adult parasite mortality, and significantly reduced the rate of parasitism by approximately 50% as compared to methamidophos or control treatments. Species composition of parasites was influenced by pesticide treatments; the Diglyphus species, Chrysocharis species and Halticoptera circulus (Walk.) demonstrated tolerance, but Chrysonotomyia punctiventris (Crawford) was intolerant.

Sign in / Sign up

Export Citation Format

Share Document