New York AGRICULTURAL EXPERIMENT STATION. 257 
Weather during tests in Table IV.—¥Fall treatment. ‘Trees 
sprayed Oct. 23. Temperature 64°, cloudy. Weather during the 
week following usually bright, with average temperature of 59°. 
TABLE LV.—FALL SPRAYING IN ORCHARD II, 


Lreetie Strength 
Pa ee he ee eect of 
Number petro- 
Kind, treated. Degree of infestation. jeum. Results. 
Per. ct. 
PEAR: . 
Bartlett ...... 2 Both extensively? in- 25 Scales not affected, 
fested. trees uninjured. , 
( 1 Extensively  in- 
| fested. 
Bartlett ...... 24 f 40 Scales dead, trees un- 
i 1 Moderately  in- injured. 
[ fested. J 
2‘ Extensively infested” as nsed in this and other tables means that the trees were encrusted 
on parts of the trunk and some of the larger limbs. Moderately and slightly infested mean to a 
less degree. 
Time of tests in Table Vi—Winter treatment. Trees sprayed 
Dec. 24. 
TABLE V.—WINTER SPRAYING IN ORCHARD II, 
Trees. ibe he 
-—_—_—_——— Sh 0 
Number petro- 
Kind. treated. Degree of infestation. leum. Results. 
Per ct. 
PEAR: 
Bartlett ...... 4 i Extensively, 1 mild- 25 Scales not affected. 
ly and 2 slightly in- Trees uninjured. 
fested. 
Bartlett ...... 4 2 Extensively and 2 40 Scales dead.* Trees 
slightly infested. uninjured. 
Bartlett ...... 4 3 Extensively infested 60 Scales dead Trees 
| (2 nearly dead), 1 uninjured. 
moderately infested. 
Bartlett ...... 4 38 Extensively infested 100 Scales dead. The two 
(2 nearly dead), 1 trees most seriously 
moderately infested. infested were killed 
the others slightly 
injured. 

3On some of the trees sprayed with the high percentages of crude petroleum an occasional 
live scale was found, but as they were always upon some small twig that might easily have 
escaped thorvugh treatment they were not considered ag affecting the results, 
1 ; 
- 
