29 MASS. EXPERIMENT STATION BULLETIN 409 



LIST OF LESS IMPORTANT GRAPE PESTS IN MASSACHUSETTS 



Insects 



Grape leaf folder — Green caterpillar which eats and folds leaves. 



Eight-spotted forester — Striped caterpillai which eats foliage. 



Grapevine tomato gall — Small green tomato-like galls on leaves and stems. 



Soft Brown Scale — Brown flat scale on canes. 



Grape Phj'lloxera — Gall-like swellings on roots and leaves. 



Diseases 



Anthracnose — Bird's-eye spots on berries; small brown spots on shoots and leaves. 



Dead Arm — Cankers on canes, killing them bej-ond canker. 



Crown Gall — Tumor-like growth on roots and canes. 



Ripe Rot — Reddish-brown spots with pinkish spore masses on fruit at ripening. 



Bitter Rot — Similar to Ripe Rot but having black spore masses. 



Chlorosis — Yellowish sickly leaves due to poor soil conditions. 



Failure to Set — Premature dropping due to unfavorable weather or culture. 



