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Volcanic soil
"Stuart Noble" wrote in message ... The recent Joanna Lumley programme about Japan visited a volcanic island in the extreme south where the world's largest radishes are grown. I can't figure out why a pumice rich soil would be any different to vermiculite or perlite, all 3 having the same properties of air and moisture entrainment. No mention of nutrients, but there must be some in volcanic soil? Puzzled...again. Volcanic soil is particularly rich in potassium and is of great benefit to potatoes so would guess that radishes would also benefit. Phil |
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