Hi Dan!

>  The best we have so far is that it was so dry during bloom in most areas 
> that even though epiphytic populations of bacteria were tremendous, they 
> never got washed into flowers to cause infection. Another possibility is that 
> the extremely dry weather suppressed bacterial growth, something not taken 
> into account in the models. 

The first hypothesis would be my guest.

I don’t think bacteria would be inhibited to grow on stigma in dry weather. But 
high epiphytic populations and no infection trigger are not rare.


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