56 
French pear seedlings.—The untreated stocks have lost from one-fourth to one-half 
of their leaves, and those remaining are badly spotted with the leaf-blight fungus. 
Stocks treated five times with Bordeaux mixture show considerable leaf-blight, but 
very few of the leaves have fallen. Seven treatments with ammoniacal solution 
are better than five or six, but not so good as any of the blocks sprayed with Bordeaux 
mixture. 
Cherry stocks.—There is considerable leaf-blight on the untreated trees, many of the 
leaves being spotted and some are now falling. Trees treated five times with 
Bordeanx mixture show some few spots, but so far as can be seen none of the leaves 
have fallen. Seven treatments with Bordeaux mixture has kept the trees in perfect 
condition, not a trace of leaf-blight being found. There is no difference between the 
blocks sprayed six times and those receiving seven treatments; furthermore, there is 
no appreciable difference between the blocks sprayed with Bordeaux mixture and 
those treated with ammoniacal solution. 
Quince stocks.—There is no difference between the untreated and treated blocks, no 
leaf-blight of consequence having appeared. 
Apple seedlings.—W hat is said of the quince stocks is applicable here. Usually the 
powdery mildew is abundant at this season of the year, but now scarcely a trace of 
it can be found. 
Plum stocks.—In every case the untreated look better than the treated. There is 
some leaf-blight on the untreated leaves, but the injury to the treated is much greater 
than any damage through this source. 
On August 24 it. was decided to make a final examination of all pear 
stock in order to obtain some data as to the actual condition of each 
block. Each tree was examined and according to condition was referred 
to one of the following grades: 
First quality: Having all the leaves perfect, i. e., showing no leaf-blight whatever. 
Second quality: Having spotted leaves here and there, but none lost through the 
attacks of the disease. 
Third quality: All leaves more or less spotted and some removed by leaf-blight. 
Fourth quality: Trees entirely defoliated by leaf-blight. 
The results of this count are set forth in Table 24 and illustrated 
graphically in Plate Iv. 
TABLE 24. Showing the condition of the pear stocks August 24 with respect to leaf-blight. 









Block.| No. and kind of stock. ‘Treatment. cal ss] oa i 3 
we |4s|Aslee| A 
o oo a ot 
1 404 Japan pear seedlings..| Untreated ...........------.|.----- 87 | 116 | 169 32 
2 125 Japan pear seedlings..| Berdeaux mixture, five 
| treatments. <2) 2-22505>20% iI 62 37 17 8 
3 | 125 Japan pear seedlings..| Bordeaux mixture, seven | — 
treatments —=-25222- -e--- 30 61 21 8 5 
4 125 Japan pear seedlings..| Ammoniacal solution, five 
treatmentss 53-5 eee alee 40 48 29 8 
5 | 125 Japan pear seedlings..| Ammoniacal solution, seven 
treatments=-- 2 ceptor 15 55 29 20 6 
6 100 Japan pear seedlings..| Bordeaux mixture, six 
GEOAUMENES a cos ee eee 30 51 25 9 
7 784Krench pearseedlings--|| Untreated = 22. -025--2------|aee-ee 12 | 132 | 609 26 
8 250 French pear seedlings..| Bordeaux mixture, five 
GEEALMON OS a= eee ee ae eee 44 | 153 43 10 
9 250 French pear seedlings..| Bordeaux mixture, seven 
; fi) GeaDMONT A= See 39 85 28 3 89 
10 250 French pear seedlings... Ammoniacal solution, five 
| . treatments. -..-.-..--....- 1 17 76 | 143 Uf 
; il 250 French pear seedlings... Ammoniacal solution, seven 
treatments. 52. o22-- =e ae 9 | 100 96 34 10 
12 100 French pear seedlings..| Bordeaux mixture, six 
treatments. .---.:------... 30 39 By Bet ee col EAS «cic 


a 
