BROWN-ROT OF PRUNES AND CHERRIES. 9 



The first and fourth applications have been especially important 

 the past season. 



BLOSSOM INFECTION OF CHERRIES. 



Observations made near Vancouver, Wash., on April 8 and in the 

 vicinity of Salem, Oreg., on April 13 showed that there had been 

 a blossom infection of cherries similar to that already described 

 on prunes (PI. I, figs. 1 and 2). On the latter date Monilia was 

 fruiting luxuriantly on the blighted cherries. It appeared that 

 most of the mfection had taken place after the petals had fallen and 

 before the fruit had had a chance to push through the husk. Black 

 Republican cherries seemed especially badly infected. Estimates 

 made on April 13 indicated that on this variety fully 90 per cent of 

 the blossoms were infected with Monilia, and in many orchards of 

 other varieties at least 75 per cent were similarly infected. A grower 

 near Felida, Wash,, sprayed some of liis cherry trees while they were 

 in full bloom, using lime-sulphur solution diluted 1 to 30. He delayed 

 the spraying of the others until the calyx browning had begun to 

 appear and then applied the same spray he had used earlier. Counts 

 made on April 8 of representative branches from each lot of trees 

 showed 9 per cent of infected fruit in the former case and over 40 per 

 cent in the latter. Spraying trees in full bloom is not to be recom- 

 mended, but the results show the value of early spraying. 



BROWN-ROT OF CHERRIES. 



Spraymg experiments for the control of brown-rot on the fruit 

 were carried on in the orchard of L. T. Reynolds, of Salem, Oreg. 

 The work was begun late in the season. The first application was 

 made on May 7 and 8, when the fruit had begun to color, and a second 

 on Jmie 1, when the fruit was approaching maturity. The latter 

 application was delayed for nearly a week on account of rain. 



Plat 1 received Bordeaux mixture, 2-4-50, plus 2 pounds of resin- 

 fishoil soap; plat 2, commercial lime-sulphur, 1 to 50; plat 3, self- 

 boiled lime-sulphur, 8-8-50, plus 2 pounds of resin-fishoil soap; and 

 plat 4 was unsprayed. 



No injury resulted from the use of any of the fungicides. The 

 Royal Ann cherries were picked on June 17 and the Black Repub- 

 licans on June 24. A regular 10-pound box of sound cherries was 

 packed from each plat and placed in cold storage at 40° F. until 

 June 27, and the fruit was then shipped by express to Wenatchee, 

 Wash. Notes on the Royal Anns were taken on July 2 and on the 

 Black Republicans on July 6. The former were thus in cold storage 

 at 40° F. for 10 days and at air temperature for 6 days, the latter in 

 cold storage for 3 days and at air temperature for 10 days. Table 

 III gives the results obtained. 



