114 MAINE STATE COLLEGE 



the method carefully tested in Maine and hope many will spray 

 for the scab another season and report the results. Directions 

 for spraying and apparatus were considered in the Station Report 

 for 1889. Additional information if needed will be given by 

 correspondence. 



Codling Moths. 



Complaints of Codling Moth ravages continue to be reported to 

 the Station. It is a surprise that the arsenic compounds are not 

 used to check this pest. It is conceded by many fruit growers in 

 other states, who have tried spraying with Paris Green and Lon- 

 don Purple for codling moths, that they are effective remedies. 

 Why do not the orchardists of Maine avail themselves of this 

 remedy? The process is simple, free from danger, effective and 

 the materials and apparatus inexpensive in relation to the bene- 

 fits received. In the interests of successful orcharding in Maine 

 may we not strongly urge the great importance of spraying? In 

 our Report for 1889 it was suggested that perhaps the first appli- 

 cation should not be made until the apples are larger then peas. 

 This is based upon the belief that the moths come out later in 

 Maine, than has been supposed. We hope those who spray will 

 watch the first appearance of the moths about the trees and report 

 the same to the Station. 



EXPERIMENT WITH PARIS GREEN UPON POTATO 



BEETLES. 



It is well known by those who use Paris Green to destroy 

 Potato Beetles, that there is more or less difficulty in obtaining a 

 mixture of the right strength to kill all the insects, without 

 "scorching" the leaves. 



In order to determine the least amount of Paris Green required 

 to do effectual work, four different strengths were used. The 

 amounts taken were one and one-half, one, one-half and one- 

 fourth teaspoonful to two gallons of water. As a teaspoonful 

 weighs very nearly 8 grams, and there are 454 grams in 1 pound 

 avoirdupois it would be at the rate of 1 pound Paris Green to 

 about 75, 112, 125, and 250 gallons of water respectively. The 

 poison was applied to four adjacent rows, all being badly infested 

 with young beetles. There was no rain at the time, or any thing 



