Lubadub, There is a 3 volume set titled "The Garden doctor" by Jacob Mittleider that addresses how to diagnose and treat nutritional deficiencies in plants. It was one of the first I purchased when I got into growing tomatoes.
https://growfood.com/shop/the-garden-doctor-vol-1-3/
Ami
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Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways,
totally worn out, shouting ‘...Holy Crap .....What a ride!'
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