Incidence of aphid-transmitted viruses in raspberry and raspberry aphids in Norway and experiments on aphid transmission of black raspberry necrosis virus.

Raspberry ( L.) is susceptible to aphid-borne viruses. We studied the incidence of four of them - black raspberry necrosis virus (BRNV), raspberry leaf mottle virus (RLMV), raspberry vein chlorosis virus (RVCV), and Rubus yellow net virus (RYNV) - in raspberry plants and aphids in and around Norwegian raspberry crops for three years (2019, 2021, and 2022).

Pesticide use, arthropod fauna and fruit damage in apple orchards in a Nordic climate.

Background: Integrated pest management (IPM) has a long history in fruit production and has become even more important with the implementation of the EU directive 2009/128/EC making IPM mandatory. In this study, we surveyed 30 apple orchards in Norway for 3 years (2016-2018) monitoring pest- and beneficial arthropods as well as evaluating fruit damage. We obtained growers' diaries of pest management and used these data to study positive and negative correlations of pesticides with the different arthropod groups and damage due to pests.

The potential for using aerated steam to eradicate strawberry mite and two-spotted spider mite on strawberry transplants.

In this study, we investigated if a steam treatment program used to produce disease-free strawberry transplants has the potential to also eliminate strawberry mite (Phytonemus pallidus) and two-spotted spider mite (Tetranychus urticae). Crowns of strawberry plants collected in a commercial field, containing young, folded leaves with all life stages of P. pallidus, and strawberry leaf discs on water agar with T.

Known and Potential Invertebrate Vectors of Raspberry Viruses.

The estimated global production of raspberry from year 2016 to 2020 averaged 846,515 tons. The most common cultivated spp. is European red raspberry ( L.