New York Agricultural. Experiment Station. 257 



Weather during tests in Table IV. — Fall treatment. Trees 

 sprayed Oct. 23. Temperature 64°, cloudj'. Weather during tlie 

 week following usually bright, with average temperature of 59°. 



Table IV. — Fall Spraying in Orchard II, 



Trees. Strength 



of 



Number petio- 



Kiud. treated. Degree of infestaiion. leiim. Results. 



Per et. 



Pear: 



Bartlett 2 Both extensively' in- 25 Scales not affected, 



fested. trees uninjured, 



r 1 Extensively in- "1 

 I fested. I 



Bartlett 2<( ^ 40 Scales dead, trees un- 



j 1 Moderately in- I injured. 



I fested. J 



- " Estrnsively infested" as used in this and other tables me.ins that the trees were encrusted 

 on parts of the trunk and some of the larger limbs. Modetately and slightly infested mean to a 

 less degree. 



Time of tests in Table V. — Winter treatment. Trees sprayed 

 Dec. 24. 



Table V. — Winter Spraying in Orchard II. 



Trees. Strength 



of 



Number potro- 



Kind. treated. Degree of infestation. leum. Results. 



Per et. 



Pear: 



Bartlett 4 1 Extensively, 1 mild- 25 Scales not affected. 



ly and 2 slightly in- Trees uninjured, 

 fested. 



Bartlett 4 2 Extensively and 2 40 Scales dead.' Tree.s 



slightly infested. uninjured. 



Bartlett 4 3 Extensively infested 60 Scales dead.' Trees 



i (2 nearly dead), 1 uninjured. 



moderately infested. 



Bartlett 4 3 Extensively infested 100 Scales dead. The two 



(2 nearly dead), 1 trees most seriously 



moderately infested. infested were killed 



the others slightly 

 injured. 



3 On some of the trees spraypd with the high percentages of crude petroleum an occasional 

 live scRle was found, but as they were always upon some small twig tint might easily have 

 escaped thorough treatrni'tit tbey were not considered as affecting the results. 



17 



