Dear all. It is known, that climate change and also extreme weather can influence the outbreak of some pests and their enemies also. Other pests may be diminshed. The question is: How extreme weather events like heat, drought, storm, heavy down poors, hail, flooding will influence the special diseases of alfalfa and clover and the special plant protection measures (chemical and biological) in clover and alfalfa. We found nothing in literature but need more information for risk assessment. Under current climate conditions plant diseases and pests, (mammalians, weeds, insect pests, nematodes and plant pathogens like fungi, viruses, bacteria) can cause considerably yield losses and damages of crops. Climate change will likely lead to increase the frequency, intensity, spatial extent, duration and timing of weather and climate extremes. Does anyone have any information about the impacts of extreme weather events on diseases and pests of rye grasses? We reviewed the possible impacts of weather extremes on pests (weeds, insect pests and plant pathogens) of hop by analyzing scientific literature published since 1945, concerning the knowledge about the influences of extreme weather on incidence of these pests.
Dear Dr. Petra Seidel,
Please check the following link.
http://tweedforum.org/publications/pdf/Pests_Diseases_Report_2013_Final_Report.pdf
Good luck!
Thank you very much, Arvind for this paper. It seems to be interesting. But I need some time to look through it. Kind regards Petra
I would expect fungal diseases like rust at high relative humidity (over 90%)
Thanks for your answer, dear Bruce. Yes, that could be that fungi like rust will benefit from high humidity, caused by heavy rain. Do you expect this, so you suspect it, because it is known that many fungi need moisture, or do you know about it, for example from own experiments. If so, at what level of influence of the extremum which degree or level of disease was observed? Have you any data? That would be a very interesting answer, I’m curious. By the way, it could also be that the spores are being washed away by the heavy rain...
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