Is “spruce-death” caused by artillery? In 1915 Dr Rubner observed a strange dying off of spruce trees in the St

Is “spruce-death” caused by artillery? In 1915 Dr Rubner observed a strange dying off of spruce trees in the St Mihiel salient (sic). He attributed it to damage from shrapnel. An academic debate ensued in the pages of the Bavarian botanical journal.
zobodat.at/pdf/mitt-bayer… https://t.co/THn7T2MiHD

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