Lae) eee es PF oe of VO le eg Vie antl Lote tae . LY PF 4 cr eee 
1 iw H Ae? te ee e-- Te * he i ( » , Jp i y ee ‘Ty 
‘| Sadie i ih i é 
; oe: RE a: °9 
EXPERIMENTS WITH NURSERY STOCK. 651 
It. is noticeable from the above table that Bordeaux 
mixture afforded the greatest immunity, also that the untreated 
unbudded stocks made much less growth than those .treated 
with Bordeaux. <A reference to the plan (page 664) will show the 
situation of the row (No. [X). When it is remembered that of all of 
the French stocks, those standing in row VIII, only three ind one- 
half feet distant, made the best growth, the element of soil 
difference is hardly to be considered as a disturbing factor. 
AMERICAN PEAR STOCKS. 
1891.— Four rows containing 1,673 stocks were subjected to a 
course of treatment similar in every respect to that given the 
French and Japan stocks. Owing to the lateness of the season 
when application was made to the growers of American seedlings 
only second-grade .stocks were to be obtained. Because of this 
unfortunate but unavoidable circumstance no comparison could 
be drawn as to the comparative value of American, Japan, and 
imported French stocks. The results of the treatments with fungi- 
cides while not as striking as with the French stocks, are valuable 
as adding testimony to the efficacy of the Bordeaux.* Seven 
treatments with this mixture proved entirely efficacious, raising 
the percentage of stocks wholly free from the disease from two- 
tenths of 1 per cent to 39 per cent. On October 9 a count 
was made of the number of stocks in each section which pushed 
out new leaves because of the severity of leaf-blight. The results 
of this count are as follows: ; 
Table 5.— Showing number of American Stocks forced to put 
out new leaves. 
> Total Per cent 
NUMBER AND TREATMENT OF STOCKS. pumber eal a 
releaved. “sends 
' 826 stocks treated 7 times with Bordeaux ........ccccccccccssccsccsevecens 7 2.14 
i, 288 stocks treated 3 times with Bordeaux,.....,...cccccscccvcsscccevvecens 93 82.29 
an $18 stocks treated 7 times with ammoniacal Solution.........0ceceeeveees 51 16.29 
825 stocks treated 3 times with ammoniacal solution .........ceeeeeeeee 94 28.92 
AEH DCIKS UILEORDEC Tie t siciiei vis oie ig ed's eeeraiatcioloia iincelstelaitle t's av.cew viclelen waa mere 152 86.10 
* See Bull. 3 Div. Veg. Path., p. 59. 

