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Re: Holes in plants

Margaret wrote:

>Over the past week a number of small holes have developed in several 
>species of plants.

What about potassium deficiency?  I have it in my plants, although rapidly 
disappearing now - see 
http://teak.wiscnet.net/~rader/aquatic-plants/nutrient-deficiency.txt - 
relevant bit follows:

"Small dead areas appear in older leaves. These can start like little 
pinpoints and grow.....the older leaves can turn yellow before they die, but 
they do not have green persisting along the major veins as in magnesium 

Susi Barber, Vancouver