^04 STATE HOE.TICULTUEAL SOCIETY. 



these points fully will demand further experiments, which are now 

 being arranged for the coming season of 1893. 



Thus it is seen that there are two periods of marked infection by 

 the fungus, both concurrent with wet conditions and high temperature, 

 the first during the third week in April when the blossoms blighted, 

 and the second in the last week in June, when the fruit became 

 attacked. 



Peach Yellows and Rosette. 



[ The dansrer of peach yellows and rosette stares us in the face, and I feel in- 

 clined to submit the following from B. T. Galloway's report to the Secretary of 

 Agriculture.] 



PART I— PEACH YELLOWS. 



( 1 ) Destructive Nature of Yellows. — Peach yellows is a perplex- 

 ing and destructive disease. On all hands it is conceded to be one 

 of the most serious with which American fruit-growers have to con- 

 tend. Formerly this disease was confined to a small district on the 

 Atlantic coast, but during the last 20 years it has invaded distant 

 xegions hitherto free, and has entirely ruined the peach industry over 

 very considerable areas. Within 10 years the disease has taken a fresh 

 and very strong hold upon orchards in the Delaware and Chesapeake 

 region, the north portion of the peninsula, and has destroyed thousands 

 and thousands of trees, rendering a great industry unprofitable or pre- 

 carious. It seems to be native to the eastern United States, having, 

 so far as we know, not been reported from California. Diligent inquiry 

 also has thus far failed to bring to light any notice of its occurrence in 

 Europe or other parts of the globe. 



The distribution of the disease and the losses occasioned thereby 

 were set forth somewhat fully in my first bulletin, and do not concern 

 us at this time. It is proper to state, however, that the losses continue 

 in the infected districts ; that the disease bas appeared in new localities ; 

 and that regions now healthy are also threatened. The yellows is cer- 

 tainly as far south as Southern Virginia, and probably as far west as 

 Arkansas and Northeastern Texas. Peach-growers are earnestly ad- 

 vised to stamp out the disease upon its first appearance, and are warned 

 against the importation of trees from infected districts. These remarks 

 apply with especial force to the Pacific coast, and in this connection it 

 is well to remember that the apricot and almond are also subject to 

 yellows. It would be much safer for the Californians to grow their 

 own peach-trees than to introduce any from the Eastern United States. 



