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Biological and integrated control of Frankliniella occidentalis (Pergande) on ornamentals in the northeastern Italy
Full text linkLaboratory, semi-field and field experiments were conducted with the aim of identifying biological and integrated control strategies to be applied against Frankliniella occidentalis. We studied the spatial and temporal distribution of the main thrips pests in greenhouses and potential antagonists in some greenhouses characterized by a different level of lateral openings and a rose garden in the open. The second experiment was planned to show that opening greenhouse structures are not automatically related to an increase in thrips problems on ornamental crops. The third experimental study has been undertaken with the aim of evaluating the impact of some biological control agents (BCAs) on Frankliniella occidentalis population. In the fourth experiment, the effect of a fungal strain of Beauveria bassiana on F. occidentalis reached the highest levels when residual and topical exposures were combine
Will opening of greenhouses affect the presence of thrips pests and their antagonists on ornamentals?
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Spatial and temporal dynamics of Frankliniella occidentalis and its natural enemies in ornamental crop systems
No full textSingle and combined releases of biological control agents against canopy- and soil-dwelling stages of Frankliniella occidentalis in cyclamen
No full textBiological control agents (BCA) can be used against Frankliniella occidentalis as an alternative to conventional insecticides. Amblyseius swirskii, Neoseiulus californicus and Orius laevigatus were applied to the canopy and Macrocheles robustulus and Steinernema feltiae to the soil in single and combined releases. The combination of nematodes in the soil and predatory mites in the canopy caused a more prompt reduction of thrips in flowers
Studio della dinamica spazio-temporale dei tripidi fitofagi e dei loro antagonisti naturali su colture ornamentali protette
No full textSpatial and temporal dynamics of Frankliniella occidentalis on protected ornamentals.
No full textWestern flower thrips (WFT) Frankliniella occidentalis is a worldwide problem of various
ornamentals and vegetables, especially under greenhouse. Here we present preliminary results of a
study on spatial structure of a WFT population and its evolution over time on ornamentals under
greenhouse. We used Spatial Analysis with Distances Indices (SADIE) methods to evaluate
nonrandomness of the distribution and association of the distributions observed at different time.
Spatial analysis of WFT population provided interesting information on the role of surrounding
environment on the insect population inside the greenhouse
Laboratory and semi-field trials on the effects of Beauveria bassiana (JW-1, ATCC 74040) against soil-dwelling stages of Frankliniella occidentalis (Thysanoptera: Thripidae)
No full textBeauveria bassiana (Balsamo) Vuill. is an entomopathogenic fungus used in controlling
various pests. Previous research showed that B. bassiana, applied to the plant canopy, could exert a
significant control of thrips populations, in particular of Frankliniella occidentalis Pergande.
However, some stages (e.g., prepupae and pupae) of this species develop in the soil being less affected
by control treatments applied to the canopy. The identification of biological control agents active
against soil-dwelling stages of F. occidentalis is an important issue for the implementation of IPM.
Here we present laboratory and greenhouse experiments carried out to evaluate the potential of
B. bassiana (JW-1 ATCC 74040) in controlling soil-dwelling stages of F. occidentalis. In laboratory
bioassays B. bassiana reduced significantly the emergence of F. occidentalis adults. In the greenhouse
experiment, a significant control of thrips population was obtained on cyclamen potted plants
Effects of Beauveria bassiana on Frankliniella occidentalis (Thysanoptera: Thripidae) trough different routes of exposure
Full text linkBeauveria bassiana is an entomopathogenic fungus widely used in biocontrol tactics over
the world. Its potential has been tested on several pest species, included the Western Flower Thrips
Frankliniella occidentalis Pergande. In laboratory bioassays, we exposed different developmental stages of F. occidentalis (first and second instar larvae, adults) to residual or topical applications of a B. bassiana commercial strain
(strain ATCC 74040, Naturalis®). The results stress on the importance to favor the contact of thrips with B. bassiana to obtain satisfactory control of this pests
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