Two of the palms have severe splits in their trunks. The other two or three (not sure of exact count) trunks are fine (no splits).
I only know the palms were planted about one year ago and had no splits at the time. I also know the owner has an irrigation system. Also, being lakefront property, the water table is high where roots could sink into lots of water for uptake).
I've seen root splitting before, as I have many Archontophoenix cunninghamia palms with split/fissured trunks, but have never seen trunks with such damaging splits as the ones shown in the below photos (or that Cocos nucifera in a related post I just replied to).
Anyone (Aussies?) had a similar experience with Wodyetia bifurcata? What is you opinion, conclusions, etc.? My buddy would like to aprise the palm owner as to the possible causes of the splitting. Also, should the trunk be treated with any kind of fungicide or other corrective actions?
The below three photos were taken this morning (12-15-10). There's been no freezes lakeside, so I'm ruling that out as a cause.















