New York AGRICULTURAL EXPERIMENT STATION. 821 
SPRAYING EXPERIMENTS TO DETERMINED THD BFFECTS OF WINTER 
APPLICATIONS OF KEROSEND OIL UPON HEALTHY BRARING TREES. 
Series [.—Nearly all of these trees were in excellent condition 
and were bearing well. The checks were of the same grade. 
They were sprayed November 22. 
TABLE III.—BEARING TREES SPRAYED WITH KEROSENE DURING WINTER: 




SERIEs I, 
Trees. 
eee on Percent- 
Kind. No. Age. age oil. Results. Checks.! 
Years. 
PEAR: 
Dwarf Kieffer, 2 8 20 Noinjury. Fruitequal Fruit average 
é to check trees. yield. 
Standard Bartlett, 2 8 20 Same, Same. 
Standard Bartlett, 2 8 40 Same. Same, 
Dwarf Kieffer, 4 12 100 Bark somewhat dis- Same, 
eolored by. oil espec- 
jally on lower part 
of larger limbs and 
upper half of trunk. 
On May 8381 fruit 
buds were not well 
set, but foliage good. 
Growth poor during 
following season 
and less than one- 
fourth crop of fruit. 
Standard Bartlett, 2 8 100 Ou May 31 the fruit Same, 
buds were well set, 
énd foliage good. 
Growth during fol- 
lowing season was 
good, with average 
yield of fruit. 
PLUM: é - 
Gueiil, 6 8 20 No injury. Growth good. 
Fruit above 
average yield. 
Guelil, 8 8 40 Noinjury. Same. 
Japan, Att So 100 May31l. Muchofthe Same, 
bark discolored; 
more than % of the 
fruit buds _ killed. 
Tree nearly dead by 
following fall and 
was dug out. 
Reine Claude, 1 10 100 May31. Seriously in- Same, 
jured. Nearly dead 
by following fall 
and was dug out.? 
But little injury to 
upper third. 
1 Two check trees for each test. $ 
2 Soon after this tree was sprayed it was found to be seriously affected by disease which prob- 
_ ably aided materially in causing its early death. 
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