128 }IA1NE STATE COLLEGE 



A BRIEF RETROSPECT. 



For the benefit of those who have not received previous reports,, 

 it may be well to give a brief resume of the results obtained from 

 three seasons' experiments. 



We have seen that apple scab is caused In 7 a parasitic fundus 

 which attacks the leaves and young twigs as well as the fruit, and 

 that the growth of the tree may be seriously checked. Spraying 

 the trees with certain compounds of copper has been found an 

 effective means of holding the disease in check, — the increase of 

 salable fruit, as a result of spraying, often amounting to 50 per 

 cent. 



Indications point strongly to the value of spraying early in the- 

 season, before the blossoms open, aud of repeating the application 

 four or five times during the season. 



The best results have been obtained from the use of Bordeaux 

 mixture, prepared as follows: 6 pounds copper sulphate (Blue 

 Stone) ; 4 pounds quick lime ; 40 gallons water. 



Dissolve the copper in a pail of hot water ; slake the lime in 

 another vessel ; mix and dilute as above for use. 



Farmers are advised to club together in the purchase of appa- 

 ratus and chemicals, thus reducing expense. 



Necessary chemicals may be obtained in large quantities of : Weeks- 

 & Potter Company, Boston ; Eimer & Amend, 205 Third Avenue > 

 New York ; W. S. Powell & Company, Baltimore, Md. Most of the 

 materials may be purchased in small amounts at the local drug 

 store. 



Force pumps and other apparatus for spraying may be obtained 

 of any of the leading manufacturers, as : Field Force Pump Company, 

 Lockport, N. Y. ; Gould's Manufacturing Company, Seneca Falls* 

 N. Y. ; W. & B. Douglass, Middletown, Conn. ; The Deming 

 Company, Salem, O. 



The most satisfactory nozzle we have used is the ''McGowen,' r 

 manufactured by John J. McGowen, Ithaca, N. Y. Our second 

 choice is the ''Climax." manufactured by the Nixon Nozzle and 

 Machine Company, Dayton, O. 



For spraying currant bushes, or for general garden use, the 

 "Knapsack Sprayer" made by the Gould's Manufacturing Com- 

 pany, Seneca Falls, N. Y., has been found very satisfactory. 

 Similar machines may be obtained from the other sources men- 

 tioned above. 



