
; 
— «646. New YerK AGRICULTURAL EXPERIMENT STATION. 
Two quite distinct experiments were made with a view of pre- 
venting this disease, one inaugurated in 1891 to test the effect of 
fungicides upon stocks, and the other carried on during the season 
of 1892 with seedlings in the seed bed. 
EXPERIMENTS WITH STOCKS. 
These experiments were inaugurated in the spring of 1891 and 
continued until the fall of 1892. The stocks planted in 1891 were — 
sprayed both seasons, the design being to ascertain the effects 
of two consecutive years. The results are here presented 
briefly and the minor details are to he found at the «Jose of the 
article. 
All the stocks were sprayed on the same dates; in 1891 on May © 
21, June 3 and 24, July 9 and 24, and August 8 and 28. One-half 
the stocks were treated seven times, on the dates just indicated, 
and one-half only three times, on the first three dates named. In 
1892 the dates of treatment were May 26-27, June 15-16, June 23, 
July 6-7 and 21, and August 5. One-half were sprayed five times, 
on the first five dates mentioned, the other half six times, as just 
indicated. The only fungicides used were Bordeaux mixture and 
ammoniacal solution. In 1891 both preparations were of essen- 
tially standard strength, but in 1892 the Bordeaux mixture was 
reduced to the sixty-gallon formula, as explained on a subsequent 
page, 671. 
FRENCH PEAR STOCK 
1891.— Four rows (1,922 stocks), of which 1,462 were treated | 
and 460 left untreated. One-half the treated stocks were sprayed _ 
with ammoniacal solution, the other half with Bordeaux, at the 
dates above indicated. Although the disease was not so abundant in 
1891 as in 1892, the contrast between treated and untreated was 
striking. Seven treatments with Bordeaux proved efficacious, 
while neither three treatments with Bordeaux nor seven with 
ammoniacal solution showed as good results, and three treatments 
with ammoniacal solution were without apparent effect. On Octo- — 

