Gunda Thöming
Research Scientist
Authors
Wiktoria Kaczmarek-Derda Trygve S. Aamlid Ingerd Skow Hofgaard Tatsiana Espevig Khaled Murad Agha Anette Sundbye Zahra Bitarafan Kirsten Tørresen Heidi Udnes Aamot Andrea Ficke Gunda Thöming Annette Folkedal Schjøll Håvard Eikemo Anne Muola Therese With Berge Belachew Asalf Tadesse Jorunn Børve Arne Stensvand Nina Trandem Gunnhild Jaastad Bjørn Arild Hatteland Katherine Ann Gredvig Nielsen Nina Johansen Charles Kwadha Inger Sundheim Fløistad Martin Pettersson Zhibo Hamborg Carl Jonas Jorge Spetz Dag-Ragnar Blystad Özgün Candan Onarman Umu Marit Skuterud Vennatrø Jan Philip Øyen Solveig Haukeland Tor-Einar Skog Roger Holten Anne Straumfors Valborg Kvakkestad Line Ulberg Tveiten Ingrid FlatlandAbstract
I Jordbruksoppgjøret 2025 (Prp. 149 S (2024 – 2025)) ble det enighet om at kunnskapsstatus og -behov innen plantehelseområdet fra 2019 måtte oppdateres. Det er gjort i form av denne rapporten. Den bestilte utredningen er avgrenset til skadegjørere og planteverntiltak som er relevante for jord- og hagebruk. Utredingen tar for seg kunnskap, prosjekter og kunnskapshull siden 2019 og fram til i dag (2026). Kapittel 1 omtaler metodebruk og plantevern i et beredskapsperspektiv. Kapittel 2.1-2.8 omhandler status for utfordringer med skadegjørere og tilgang til planteverntiltak for alle aktuelle plantekulturer for ugras, skadedyr og sopp. Kapittel 2.9 gir en oversikt over godkjente og utgåtte plantevernmidler siden 2019. Kapittel 2.10 omhandler skadegjørere hvor kjemiske plantevernmidler er i begrenset bruk. Det vil si virus, bakterier og nematoder. Kapittel 3 tar for seg ny teknologi og innovative metoder for integrert plantevern og faktorer som påvirker bruken av disse. Kapittel 4 omhandler miljø- og helseeffekter knyttet til bruk av kjemiske plantevernmidler, hvilke plantekulturer som utgjør størst risiko for negative miljøeffekter og faktorer som reduserer helserisikoen. Kapittel 5 tar for seg næringens behov og utviklingstrekk knyttet til kunnskap, rådgivning og tiltak. Dette kapittelet ser også på årsaker til eventuelle endringer i bruk av og behov for plantevernmidler som følge av for eksempel miljøkrav.
Authors
Olle Anderbrant Hanh Huynh Ann-Kristin Isaksson Line Beate Lersveen Myhre Christer Löfstedt Sigrid Mogan Elisabeth Öberg Marja Rantanen Gunda Thöming Glenn P. SvenssonAbstract
Currant, and in particular blackcurrant, Ribes nigrum, is widely grown in Europe. It is the host of a number of pest insects, but their occurrence and the damage they cause vary geographically. In northern Europe, three lepidopteran species, the currant shoot borer (Lampronia capitella), the currant clearwing (Synanthedon tipuliformis), and the currant bud moth (Euhyponomeutoides albithoracellus), are particularly damaging and sometimes cause decreased plant vigour and drastic yield losses. With fewer insecticides approved for use and with an increased interest in organic production of currants, the need for alternative methods to control these moths is urgent. We here applied pheromone-based mating disruption in small and sometimes well isolated plantations in Finland, Norway and Sweden against the three pests using 15–25 g of active ingredients and 300 dispensers per ha. A strong trap shutdown effect, up to 100%, was recorded for the currant clearwing and the currant bud moth, but no effect on the most widespread species, the currant shoot borer, was noted. After 1 year of treatment, however, it was not possible to detect any significant effect on the damage level or on the future adult population size of the pests. We conclude that for the currant clearwing and the currant bud moth, mating disruption is likely to work with higher pheromone doses or modified dispenser density, whereas the reason behind the lack of effect on the currant shoot borer needs to be addressed by new experiments and observations of behaviour.
Authors
Gunda ThömingAbstract
No abstract has been registered
Division of Biotechnology and Plant Health
Strategies and methods to manage major pests and diseases of onion (‘QualityOnion’)
Onion fly and Fusarium basal rot represent major threats for sustainable Norwegian onion production. There are substantial gaps in our knowledge regarding these pests such as which Fusarium species infect onions in Norway, what are the main sources of Fusarium inoculum, and how onion fly prevalence is changing through the growing season.
Division of Biotechnology and Plant Health
Plant Pest prevention through technology-guided monitoring and site-specific control
One of the ambitious goals of the Farm2Fork strategy is to reduce the use of pesticides in the EU by 50%. The expected increase in plant pests due to climate change, international trade and the intensification of food production systems offsets this target.