

Miscellaneous Publication 340, U. S. Department of Agriculture 



Plate 8 



A, Sulphur dioxide injury on upper part of a bunch of Emperor grapes (color of 

 lower part is normal) ; B, sulphur dioxide injury on Emperor grapes, appearing 

 as sunken cap stems; C, sulphur dioxide injury on Emperor grapes, appearing 

 as a sharply delimited, decolorized area at thestem end. 



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