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I think my raspberries may have manganese deficiency
http://www.hbci.com/~wenonah/min-def/plate308.jpg
A lot of the leaves look like that, with yellow between the veins. They're growing in the least fertile corner of the garden (the one that originally had the most builder's rubble in it) and it's never had as much compost dug into it as the rest. Does clay contain much manganese? It may be that organic matter makes minerals more available. My soil science was a very long time ago - does anyone know much about it?
A lot of the leaves look like that, with yellow between the veins. They're growing in the least fertile corner of the garden (the one that originally had the most builder's rubble in it) and it's never had as much compost dug into it as the rest. Does clay contain much manganese? It may be that organic matter makes minerals more available. My soil science was a very long time ago - does anyone know much about it?