oO” 
planted 10 by 12 feet. The trees were fairly uniform in size, the aver- 
age height being about 10 feet. 
the rest were left for control. 
tion thereto, the plan of the experiment is shown. 
Thirty of the trees were treated, while 
In the following diagram and explana- 
D1aGRAM 6.—Plan of experiment in the treatment of pear leaf-blight, cracking, and 
scab. Each tree is represented by a circle, the black being the untreated, the white the 
treated. 
@®9eeeoeedgdgee@e 8d @ @ 
@ Or O» O* @ Se Ox O* O° @ 
@®eeeoe@ee @ @ @ 
é 
O 
22 
O 
21 
40 
@®eoeee¢@es @ 
@: © 
@®eeeoeegéée ee 
@* O8 O8 OF @S @8 O88 C8 OF OE 
@9eee%? see ®@ 
EXPLANATION OF DIAGRAM NO. 6. 


Date of sprayings. 

April 14, 25, May 9. 
April 14, 25, May 9, June 5, 25, July 15, | 
August 5. 
April 25, May 9. 
April 14, 25, May 9. 
April 14, 25, May 9, June 5,: 
August 5. 
Tree. Kind of treatment. 
MING ETeARMGIth ee ee She ee oe 8 es S- 
2 | Ammoniacal solution, two treatments.-......--- April 25, May 9. 
3 | Ammoniacal solution, three treatments..-....--. 
4 | Ammoniacal solution, seven treatments.....--.-. 
fat We GrOALINGNG 5 oan aoe ae Soawn ce oa alone sss 
mee rGh iv OAS = =! s520% oe 5 es ek eee 
7 | Modified eau celeste, two treatments ........... 
8 | Modified eau celeste, three treatments....-..... 
9 | Modified eau celeste, seven treatments ......... 
PO NOLEOALNONG So 5000 ccs Heese osex caetasewscoaees | 
cl. PCOLD A ep Ten Tir) eS ee a ee ee 
12 | Precipitated carb. copper, two treatments.....- 
13 | Precipitated carb. copper, three treatments .-.. 
14 | Preeipitated carb. copper, seven treatments. . 
April 25, May 9. 
April 14, 25, May 9. 
.-| April 14,25, May 9, June 5, 
August 5. 
bo 
OV 
25 
5, July 15, | 
,duly 15, | 
| 
