c6 AGRICULTURE OF MAINE. 



^ 



states, at least four generations are common in a single year, 

 it is doubtful if we have more than two generations annually 

 in the most of this state. Conditions seem to be much more 

 favorable for the scale in York County than farther north and 

 this might well be explained by temperature conditions. 



San Jose scale has been found at Northeast Harbor, but it 

 was dead when discovered. The infestation at Lewiston is the 

 most northerly location of any living San Jose scale now being 

 observed by the Bureau of Horticulture. 



The orchardists are advised to make a most careful inspec- 

 tion of all nursery stock which they contemplate setting. All 

 mfested trees or plants should be destroyed by fire. The scale 

 is so minute that the ordinary observer may not recognize it, 

 so it is important to apply the dormant spray to all trees to 

 help in the control of this elusive and destructive pest. 



BROWN ROT OF PLUM. 



This disease has been known for about 60 years and has 

 been a cause of great loss of stone fruit in the east. It is 

 especially bad when the weather is muggy and overcast. Prac- 

 tically no varieties are exempt from attack, although the smooth 

 skinned fruits are more susceptible than the fuzzy sorts. UsU' 

 ally the damage is not done until the fruit is half grown, but 

 during many seasons the injury occurs during the blooming 

 period or shortly after. This is usually noticed by the mummi- 

 fied fruit remaining on the tree. The disease first shows itself 

 by dark-colored spots which increase in size until the wliole 

 fruit is invO'lved. Shrinkage does not usually occur until the 

 rot envelops the entire fruit, consequently there is little chang-^ 

 from the natural form. As the spores pass the winter on the 

 mummified fruit, it can be readily appreciated that this fruit 

 should be entirely cleaned up. If the fruit has been allowed 

 to decay on the tree, without doubt many of the bud scales and 

 twigs are infected with spores which will begin growth as soon 

 as conditions are favorable. Spores may be blown for a long 

 distance or carried by birds and insects. 



A dormant spraying of lime-sulphur, followed by a summer 

 spraying at the time blossoms are falling, using self-boiled 

 lime-sulphur or a very dilute form of commercial lime-sulphur, 

 will aid greatly in its control. 



