Alternative to azadirachtin to control Dysaphis plantaginea Passerini (Hemiptera: Aphidae) in organic apple production
MetadataShow full item record
The rosy apple aphid, Dysaphis plantaginea Passerini (Hemiptera: Aphidae), is a major pest of apple trees. In organic apple production, this aphid is commonly controlled by spraying azadirachtin, targeted against fundatrices in spring. However, this is the only active ingredient that has proved effective for the management of this pest in organic production, and therefore it would be desirable to provide other alternatives. In this study, several treatments (pyrethrins, garlic extract, kaolin, potassium salts of fatty acids, and defoliation) applied in autumn to prevent or reduce the presence of winged forms and oviparae in the trees were compared. In addition, applications of paraffin oil and lime sulphur in winter against rosy apple aphid eggs were tested. The trials were carried out in Catalonia (NE of Spain) from 2005 to 2010. The results showed that pyrethrins reduced the presence of rosy apple aphid oviparae but they did not have a knockdown effect. The time of application was crucial since the spring infestation was kept under control only when pyrethrins were sprayed throughout the period when oviparae were in the apple trees. It was demonstrated for the first time that pyrethrins sprayed in autumn can prevent outbreaks of rosy apple aphid and can therefore provide an alternative to azadirachtin. As a result, the rosy apple aphid can be successfully managed in countries where azadirachtin is not approved and the likelihood of development of resistance will be reduced since more than one active ingredient will be available for the control of this pest.
Is part ofBiological Agriculture & Horticulture, 2017, p. 1-12
European research projects
Showing items related by title, author, creator and subject.
The Contribution of surrounding margins in the promotion of natural enemies in mediterranean apple orchards Rodríguez-Gasol, Neus; Avilla Hernández, Jesús; Aparicio, Yahana; Arnó i Pujol, Judit; Gabarra i Ambert, Rosa; Riudavets, Jordi; Alegre Castellví, Simó; Lordan Sanahuja, Jaume; Alins Valls, Georgina (MDPI, 2019-05-23)(1) Habitat management can enhance beneﬁcial arthropod populations and provide ecosystem services such as biological control. However, the implementation of ecological infrastructures inside orchards has a number of practical ...
Sphaerophoria rueppelli adults change their foraging behavior after mating but maintain the same preferences to flower traits Rodríguez-Gasol, Neus; Avilla Hernández, Jesús; Alegre Castellví, Simó; Alins Valls, Georgina (SpringerInternational Organization for Biological Control, 2019-02-20)Hoverflies can play an important role in aphid biological control. Adult hoverflies depend on pollen and nectar to survive. Therefore the placement of flower resources in agroecosystems is a common method to enhance the ...
Alins Valls, Georgina; Alegre Escartín, Sònia; Avilla Hernández, Jesús; Batllori, L.; Blázquez, M.D; Carbó, J.; Dapena, E.; Escudero Colomar, L. Adriana; Iglesias i Castellarnau, Ignasi; Lordan Sanahuja, Jaume; Miñarro, M.; Vilajeliu i Serra, Marià; Vilardell i Coderch, Pere (Editorial Tècnica Quatrebcn, 2010)La demanda de productos procedentes de la agricultura ecológica ha experimentado un fuerte aumento en los últimos años tanto en España como en el resto de Europa. Sin embargo, son aún escasos los agricultores que deciden ...