On Thu, 14 Aug 2003 09:21:26 +0100, Derek Turner
wrote:

Mention has been made of blight and weather conditions on toms/BM
thread.

sorry to follow up to my own post, but I've just found this:

quote
Smith Period Definition

A full Smith Period has occurred when:
At least two consecutive days where min temperature is 10ºC or above
and on each day at least 11 hours when the relative humidity is
greater than 90%.

A Near Miss occurs when:
One or both of the above two consecutive days has only 10 hours when
the relative humidity is greater than 90%.
\quote

from www.potatocrop.com
--
Derek Turner

Outlook Express is worth precisely what you paid for it.


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