Maybe it would be a reason, now that you say it.
I guess it's why many books warn us against it and insist in flushing.
Note to self keep flushing most of the time!
but then again if it is getting poisoned by too much minerals than it's probably because you are to heavy handed on the fertilizer no?
Wouldn't simply lowering the amount and spacing them with flushing d a better job than cutting off?