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Plant nutrient requirements

16 votes
Accepted

How can I correct a nutrient excess in soil?

I have studied the chart you mention and, besides all the deficiency/ toxicity symptoms that it states may result from an excess of these nutrients, I would add that in the long term (1) excess calcium …
Mancuniensis's user avatar
  • 14.3k
11 votes
3 answers
2k views

Is it really necessary to rotate runner beans?

If their long-term failure to ‘sow by the rules’ has depleted the soil of certain nutrients, it certainly isn’t apparent. Is it really necessary to rotate runner beans? …
Mancuniensis's user avatar
  • 14.3k
10 votes
Accepted

What is my citrus deficiency, based on leaf appearance? And how to treat?

Although I haven't come across this problem myself, I have done some research and would say, judging from the first (smaller) photo, that this is probably a magnesium deficiency, to which citrus trees …
Mancuniensis's user avatar
  • 14.3k