Biological control of adult populations of phylloxera gallicola with enthomopathogenic fungus
Abstract
In order to analyze the efficacy of the 4 types of fungus preparation based on the Beauveria bassiana spores on the adult populations of phylloxera gallicola an experiment arranged in a randomized complete block design with three replications was organized in the greenhouse conditions. There were taken into study two grapevine varieties, Cabernet Sauvignon and Feteasca alba.The conidia of Beauveria bassiana persisted on the leaves surface and infected the larvae and adults of phylloxera for a period of minimum six days, depending of the bioinsecticide composition. The chemical insecticides caused a stronger and faster lethality in comparison with the fungal biopreparations, the high larval mortality of 90.7% being recorded during the first two days from the treatment. After six days, the rate of lethality caused by the variant of bioinsecticide represented by conidial suspension added with 1% glycerol and 1% canola oil was similar to that produced by chemical preparation. Repeated application of the bioinsecticides based on the Beauveria bassiana can cause a significant reduction of the phylloxera population and it could replace the chemical treatment.
Authors who publish with this journal agree to the following terms:
a) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
b) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
c) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).