Several interesting and relevant results for the Slovenian and world science were achieved in frame of the research programme. One of the most important among them was the detection and identification of RBDV infection on grapevine. The identity of the virus was confirmed using serological and molecular methods. This was the world's first detection of natural RBDV infection on non-Rubus host and also the first report of RBDV infection of grapevine. According to first results the virus is widespread in Slovenia and further research on the virus and its importance for grapevine growing will have to be done in the future. Another important result is the first finding of Xiphinema rivesi in Primorska. According to the previously known data this species was found in Europe to a limited extent in Germany, France, Spain and Portugal. We found that the host plant influences morphological characteristics of the nematode therefore thorough review of identification keys of the genus will have to be carried out. Results of our work have contributed to the knowledge on biodiversity of harmful organisms. As an example, data collected in Slovenia in the field of phytonematology were included in the GBIF (Global Biodiverstity Information Facility) system. The results of our research work contribute directly to the economical production of high quality healthy food and indirectly to the improvement of economical, social and ecological situation of agriculture, especially in less suitable areas. Abandoning of agricultural land-use in these areas is characteristic not only for Slovenia, therefore the findings of our research are interesting also on the wider, especially European level. In spite of an ever stronger liberalisation of agriculture and market with agricultural products, the care for preservation of cultivation of agricultural areas remains one of the basic goals of practically all agricultural policies in the world.