FORTY-THIRD ANNUAL REPORT. 109 



The spray to use is one lliat kills by contact. Kicotine is best of all 

 but expensive; strong tobacco tea will also produce results. For further 

 information, see page 119. 



Fire Blight has been very serious in apple trees in some parts of the 

 State during the past few years. 



For description and method of control see "Treatment for Pears^^ 

 on jiage 112. 



GENERAL TREATMENT FOR SPRAYING PEACH ORCHARDS. 



Inspect for scale insects, the same as for apple, and spray with strong 

 lime sulphur Avash the same as directed for ajjple trees. 



If this S])raying is made, it will also prevent the leaf-curl disease. If 

 the lime-sulphur spraying is not required, a spraying must be made 

 to prevent the leaf curl which is often especially serious on Elbertas. 

 For this spraying, use bordeaux mixture or the coy)per sulphate solu- 

 tion (2 pounds of copper sulphate dissolved in fifty gallons of water). 

 It is very important that this spraying be made before the buds swell. 

 If made after that time, it will not be successful in preventing the leaf 

 curl. 



If the fruit in your orchard is commonly affected with the rot and 

 the scab (the small black specks usually on the upperside) and the 

 curculio (''the insect that stings the fruit") — and most of the peach 

 orchards in Michigan are affected with i\ll of these — make sprayings as 

 follows : 



Just After the Blossoms Drop and Most of the ''Shucks" Have 

 Fallen off. spray with poison, using 2 pounds of arsenate of lead in 

 every 50 gallons of water. 



(See under arsenate of lead page 124.) 



Never use any arsenical other than areenate of lead, on yjeach. 



Two Weeks After the Previous Spraying, another must be made. 

 This time use the self-boiled lime-sulphur and to every 50 gallons add 

 2 pounds of arsenate of lead. The dilute lime-sulphur has not been 

 generally satisfactory on peaches. Even when very dilute some burning 

 of the foliage has resulted. 



About One Month Before the Fruit Ripens^ spray again the same 

 as directed above. 



In orchards where the curculio is not present or not serious, the spray- 

 ing recommended "Ju.st after the blossoms fall" can be omitted. 



Self-boiled lime-sulphur settles rapidlv, so keep well agitated and do 

 not add the arsenate of lead until just before spraying. Use fine nozzles 

 and give the trees a uniform coating of mist-like spray. 



Peach Tree Borer. Dig out by hand early in spring or late in fall 

 at points where gumming shows. Sterilize knife with carbolic acid to 

 prevent spreading crown-gall which may be present. 



"peach yellows" and "little peach." 



These two diseases are extremely infectious and very diflficult to 

 positively identify. Their causes are unknown and the only method of 

 control is destruction of the tree — fruit, root and branch — a.s soon as 



