A client has sent me photos of a problem in their paddock. Could it be a virus?
Answer from Hugh Wallwork, SARDI
Hi,The symptoms do not suggest that a pathogen is involved. It is somewhat similar to barley yellow dwarf virus (BYDV) but I am sure that it is not the case here despite there being many aphids in the area.
I would suggest that patch whick looks like a bit of a gully in the paddock has suffered somes ort of waterlogging or nutrient leaching stress.
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