66 OHIO EXPERIMENT STATION: BULLETIN 198. 



GENERAL PROGRAM OF TREATMENT FOR THE PEACH. 



When to spray 



For what to spray 



With what to spray 



Remarks 



(Special) 

 Before buds open in 

 early spring* , 



San Jose scale and peach 

 leaf-curl. 



Lime-sulfu ror soluble 

 oil. 



Lime- sulfur should be 

 used for leaf-curl whether 

 scale is present «r not. 



(Special) 

 Before buds open in 

 early spring-. 



Soft scales or lecaniums . 



Kerosene emulsion 

 diluted 6 to 8 times, 

 two applications one 

 week apart, or use 

 soluble oil. 



1 . Before the buds 

 open, or better be- 

 fore they swell. 



Leaf-curl scab and brown 

 rot. 



Lime-sulfur or Bor- 

 deaux. 



If the lime-sulfur is 

 applied very early in 

 spring- the results a g-ainst 

 leaf-curl are likely to 

 prove best. 



2. Just before blos- 

 soms open . 



Diseases under 1 and 

 curculio. 



Bordeau X cum bined 

 with arsenate of lead. 



3- Just after blos- 

 soms fall. 



Same as above. 



Dilute Bordeaux and 

 arsenate of lead. 



Important if curculio is 

 abundant. 



(Special] 

 One week after 3 . 



Curculio. 



A rsenate of lead . 



Apply if curculio is num- 

 erous, also jar treesand 

 collect beetles if they are 

 very destructive. 



4. Ten to fifteen days 

 after 3 . 



Scab andfungrousdiseases 



Self-boiled lime-sulfur 

 made with cold water. 



Do not mix arsenicals 

 with this spray. 



CHERRY INSECTS, 

 MARCH. 



See apple section for these: 



Spring Canker Worm, Paleacrita vernata. See page 39, 40. 



Fall Canxer Worm, Ahofhila fometaria. See page 40. 



San Jose Scale, Aspidiotus perntctosus. See page 39, 



Scurfy Scale, Chionaspis furfurus. See page 51. 

 See Plum Section for this: 



Soft Scales, Eulecanium spp. See page 58. 

 See Peach Section for this: 



Walnut Scale, Aspidiotus juglans-regiae. See page 62. 



APRIL. 



See Apple Section for these: 



Bud Moth, Tmetocera ocellana. See page 39. 



Leaf Crttmpler, Mineola indigenella. See page 42. 



Fruit Bark Beetle, Scolytus rugulosus. Seepage 51. 



Peach Bark Beetle, Phloeotribus limtnaris. See page 62. 

 The Black Cherry Plant Louse, Myzus cerasi, attacks the 

 leaves as soon as they expand, congregating on them in great num- 

 bers beneath, and attracting swarms of flies and honey-loving insects 

 by a profuse excretion of honey dew^. The leaves often become 

 badly crumpled under the attack, and the tree may not recover a 

 wholly healthy appearance during the whole season. Treatment 

 same as for apple aphids, page 41. 



