326 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
The following experiments with pear and apple trees included 
but one application of oil. The apples were sprayed May 4 and 
5. The weather was bright, slight wind, temperatures May 4, 
54°, May 5, 56°. Average temperature during the- following 
week 60°. The pears were sprayed May 12. The weather was 
bright with a strong wind. Temperature 64°. Average tem- 
perature during the following week 55°. 
TABLE VIII.—BEARING APPLE AND PEAR TREES SPRAYED WITH 100° 
Fire-TEST KEROSENE. 


Trees. 
Stacie titan ARE lie ze Results. 
P Perce: t- 
Kind. No. age oil. 
APPLE: : 
Greening and 10 15 May 9 small percentage of leaves killed. 
Baldwin. 
Greening and 16 25 May 9 a little less than one-third of leaves 
Baldwin. killed. 
Greening and 17 40 May 9 from one-third to one-half of leaves 
Baldwin. killed. Bark somewhat discolored near 
base of larger limbs. 
Greening and 10 60 May 9 about two-thirds of leaves killed. 
Baldwin. Bark discolored on many of the limbs. 
Greening and 10 100 Nearly all of the leaves killed. Also some 
Baldwin, of the small branches. The bark on the 
large limbs and trunk injured in spots 
' but not enough to seriously affect the 
tree. All of the trees put out new 
foliage. 
DWARF PEAR: 
Principally Bart- 40 15 No injury to leaves or bark except in a few 
lett. cases where the nozzle was held in one 
place too long. This injury was very 
slight. 
Series [b.—In these experiments 150° fire-test oil was used on 
healthy, bearing apple and pear trees. One application was 
made on one lot of apples on June 4 and 5, and on another lot 
June 10. Weather cloudy, wind mild, temperature 66°. Aver- 
age temperature during week following 73°. 
1F ull size trees. 
