Oh no..Botrytis!

I have botrytis only just starting on the stems of all my plants..they are my only crop..greenhouse grown:evil:. I am not quite at the bud stage yet..another 6 weeks or more I would say.:cuss:sooo angry & disappointed. I have taken off all the nodules of botrytis..well its grown on base of leaves that were removed because they had gone yellow. Can I spray with a systematic fungacide??? Will I save them do you think..please don`t tell me I have no smoke this year!:-?
I had invested in a small polytunnel & kept it so clean too! I cannot grow indoors, no room. Nor can I have electricity in my garden for fans etc. But tried keeping ventilation good..oh am I just drivelling on trying the avoid the inevitable!:roll:
 
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