42 THE CONNECTICUT POMOLOGICAL SOCIETY. 



not appear on apples sprayed this year, but did last >ear when 

 not sprayed. 



Nectarines are not commonly raised in this state, but those 

 that are seem to be troubled seriously by fungi. Scab { Clad- 

 osporiiun carpophihuii) , apparently, is the worst of these ene- 

 mies. It greatly mars the appearance of the fruit by its vig- 

 orous development in the epidermis, causing more or less 

 cracking of this and the formation of a corky growth of tissue. 

 According to Mr. Thompson of Thompson, Conn., little of 

 the diseased fruit matures. The fungus evidently carries over 

 the winter on the twigs. While this is the first record in this 

 state for the scab on nectarines, it is the same fungus that is 

 so common on our peaches. The writer is very much inter- 

 ested in a life history study of this fungus which has been 

 under special observation for two years. So far it has been 

 found in Connecticut on the peach, nectarine, apricot, common 

 wild plum and the beach plum, and elsewhere in the United 

 States it has also been reported on different varieties of the 

 cultivated American plum, on cherry and on the almond. Infor- 

 mation concerning injury to any of these hosts and specimens 

 are especially desired the coming season. 



Bacterial Black Spot {Pscudomonas Primi) is a new trou- 

 ble of Japanese plums that was first described a few years ago 

 by Dr. Erwin F. Smith of the U. S. Dept. of Agriculture, from 

 Michigan. The writer first received specimens of this disease 

 during the summer of 1904 from Mr. F. L. Perry of Bridge- 

 port, Conn., and during the past summer specimens were sent 

 from Rhode Island. Apparently, Dr. Smith is the only writer 

 who has discussed this trouble. He found it on both the 

 leaves and fruit. So far in this state it has been reported only 

 on the fruit, but presumably it also occurs on the leaves. Speci- 

 mens sent from Pomfret in 1903 on peach leaves, and referred 

 to m a previous report, may possibly prove to be the same as 

 this disease. On the leaves the bacteria produce numerous 

 small water-soaked areas from which the tissue may eventually 

 fall out, givmg a shot hole eflfect. On the half-grown green 

 fruit black purple, eventually somewhat sunken, spots appear, 

 but the disease does not penetrate very deeply into the fiesh. 

 One to several of these spots may develop on a plum, and the 



