Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2008
Forfattere
Arne HermansenSammendrag
Skurv i potet: Påvirkes skurv av vekstavslutning? Informasjon om nytt skurvprosjekt fra 2008
Forfattere
Arne HermansenSammendrag
Soppsjukdommer i løk. Sprøytestrategi i 2008
Forfattere
Bent J. Nielsen Jens Grønbech Hansen Hans Pinnschmidt Ragnhild Nærstad Arne Hermansen Vinh Hong Le Asko HannukkalaSammendrag
The existing potato late blight forecast and decision support systems used in the Nordic countries are based on data from the 1930s and the 1950-60s on how temperature and humidity influence Phytophthora infestans epidemiology. Influence of weather conditions on sporangium production, release, viability and infection of P. infestans was investigated in Denmark, Norway and Finland using Burkard spore traps and exposure of trap plants in field plots in 2005-2007. Large amounts of sporangia were trapped after nights with long periods with high humidity. Sporangia produced in one humidity period were mainly released at the first humidity drop in the morning hours, but there were also some periods with delayed sporangium release. Local new infections occurred mainly during the morning hours when leaves were still wet. On many days sporangia did not survive until the afternoon and the results indicate that conditions for survival of sporangia and infection are major bottlenecks for the spread and development of the disease. These results have important implications for practice. Survival of sporangia and infection must be better integrated into the calculation of "risky days" in late blight forecasting systems.
Forfattere
Ragnhild Nærstad Arne Hermansen Vinh Hong Le Bent J. Nielsen Jens Grønbech Hansen Hans Pinnschmidt Asko HannukkalaSammendrag
The existing potato late blight forecast and decision support systems used in the Nordic countries are based on data from the 1930s and the 1950-60s on how temperature and humidity influence Phytophthora infestans epidemiology. Influence of weather conditions on sporangium production, release, viability and infection of P. infestans was investigated in Denmark, Norway and Finland using Burkard spore traps and exposure of trap plants in field plots in 2005-2007. Large amounts of sporangia were trapped after nights with long periods with high humidity. Sporangia produced in one humidity period were mainly released at the first humidity drop in the morning hours, but there were also some periods with delayed sporangium release. Local new infections occurred mainly during the morning hours when leaves were still wet. On many days sporangia did not survive until the afternoon and the results indicate that conditions for survival of sporangia and infection are major bottlenecks for the spread and development of the disease. These results have important implications for practice. Survival of sporangia and infection must be better integrated into the calculation of "risky days" in late blight forecasting systems.
Forfattere
Arne HermansenSammendrag
Svartskurv kan også gi vekstsprekk i potet
Forfattere
Arne HermansenSammendrag
Tuber diseases in potatoes
Sammendrag
Norge deltok i EU-prosjektet Blight-MOP i perioden 2001-2005 med mål å redusere tørråte i økologisk potetproduksjon uten bruk av kobberpreparat. Sluttrapporten ble ferdigstillt i 2007 og denne publikasjon er en oppsummering. Prosjektet har sett på tørråteproblemet fra flere hold og i et bredt systemperspektiv.
Forfattere
Arne HermansenSammendrag
Utfordringen plantesjukdommer og produksjon av kvalitetsløk
Forfattere
Arne HermansenSammendrag
Variability of the Nordic Phytophthora infestans populatio
Sammendrag
En gjennomgang av de viktigste skadeorganismer (skadedyr, sjukdommer og ugras) som forekommer i grønnsaker og potet i Norge, samt bekjempingsmetoder som er tillatt og anbefalt ved økologisk dyrking.