Larch Needle blight?

Hi I have quite a few Larches with tiny bumps under the needles which are starting to turn yellow. This occurred after 3-4 days of rain. After some google search it looks like some sort of fungal issue… Perhaps needle cast or blight??? Is this treatable? What would be recommended?
Cheers

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Hi Jpo, it looks like a type of rust. A good fungicide should sort it out for you.