70 OHIO EXPERIMENT STATION: BULLETIN 198. 



QUINCE INSECTS. 

 MARCH. 



See Apple Section for treatment of these: 

 San Jose Scale, Asfidiotus ferniciosus. See page 39. 



APRIL. 



See Apple Section for these: 



Leaf Crumpler, Mineola indigenella. See page 42. 



Rounded Headed Borer, Saferda Candida. See page 50. 

 This insect is very injurious to the quince. 



may. 



See Pear Section for these: 



The Pear Tree Blister Beetle, Pomfhofaea aenea. See p. 56 

 The Pear Slug, Eriocamfoides limacina. See page 56. 



See Apple Section for these: 



Codling Moth, Carfocafsa -pomonella. See page 47. 



GENERAL PROGRAM FOR TREATMENT OF QUINCE. 



Same as for Apple — See page 52. 



GRAPE PESTS. 

 MARCH-APRIL. 



In the Winter Manual we have emphasized the importance of 

 clean culture. The vfork of cleaning up the leaves, burning over the 

 borders of the vineyard, and stirring the surface of its soil, should 

 never be deferred until spring if it is possible to do it in the fcill or 

 early vyinter. Spring cleaning up is less effective, in the vineyard, 

 than fall v?ork of the same kind, but it is much better than none. So 

 far as possible, get the leaves out on the borders and burn. It may 

 sometimes be necessary to spray with crude oil over the collected 

 refuse and the thin portions of the border before setting on fire. 

 Cleaning up and burning is very important against the Leaf Hopper or 

 Grape "Thrips," the Grape Flea Beetle, the Grapeberry Worm and 

 the Grape Cane Gallmaker. After pruning, burn all the trimmings. 

 This will destroy the eggs of Tree Crickets and similar insects as 

 well as the larvae and pupae of various insects working within or ad- 

 hering to the canes. 



may. 



In late May or early June, depending on the latitude and the 

 season, the Grapeberry Moth appears and lays its eggs among the 

 bloom clusters. The Grape Curculio appears about the same time. 

 Since both insects usually appear about the first of June, a fuller 

 mention of each is reserved for the Summer Manual. 



