OBSERVATIONS ON THE STRUCTURE, DYNAMICS AND ABUNDANCE OF ARTHROPOD SPECIES FROM POTATO CROPS IN RĂDĂUTI AREA, SUCEAVA COUNTY

Rezumat

The collection of the material was done with the help of Barber pitfall traps in a potato crop in the NE area of Romania, in the town of Rădăuti. Suceava county. The observations were made in 2022 in an autumn potato crop, the Gared variety using 3 experimental variants:
- V1- potato grown in ecological system (with treatments approved in ecological agriculture); - V2- potato grown in a conventional system (with chemical treatments);
- V3- potato cultivated without treatments.
For each variant, 12 traps were used placed on two rows at a distance of 10-12m between traps per row and at 6-8m between rows. The material was collected from May to September, making a total of 4 collections. The determination of the collected material was done with the help of determinants and specialized sources on the Internet. The collected arthropods belong to the following groups: insects and mites. Among the insects collected, Coleoptera, Hymenoptera, Diptera and Heteroptera species were most frequently collected. Coleoptera were determined to species level. the other arthropods were determined to order level. Among the more numerous coleoptera were species of carabids, chrysomelids, elaterids and staphylinids.