CONTENTS, 



Page. 



Introduction - 61 



A brief consideration of ^'ineyard conditions 62 



Work undertaken at North P'.ast, Pa 63 



Extent of injury to newly bearing vineyards 64 



Renovation experiment on an old, run-down vineyard 65 



vSpraying experiment in a newly infested vineyard 66 



Methods of recording results 66 



Eecommendations based on observations and results of season's work 67 



ILLUSTRATIONS 



Page. 

 Pi,ATE VIII. Vines injured by grape root-worm compared with uninjured vines. 

 Fig. 1. — Six-year planted vines making but a weak growth, 

 be(;ause of injury to roots by grape root-worm. Fig. 2. — Two- 

 year planted vines not yet attacked by grape root-worm 64 



IX. Vines injured by grape root-worm compared with uninjured vines. 

 Fig. 1. — Young vines almost ruined by feeding of grape root- 

 worm upon their roots. Fig. 2. — A normally thrifty vineyard 

 at Nortli East, Pa., uninfested by grape root-worm 64 



