ExpErRIMENtsS with Nursery Stoox. 655 
knowledge been made to establish it, that the premature fall of 
the leaves does not entail so great a loss to the cherry seedling 
as does the fall of the pear foliage, which drops while still green. 
The experiments in the prevention of this disease, extending 
over a period of two seasons, were made upon the two well- 
known kinds of stocks, Mahaleb and Mazzard. In 1891 only 
the stocks not yet budded were treated, while in 1892 the stocks 
pbudded in the fall of 1891 were sprayed, suitable control being 
left. 
For record of budding see pp. 665, 668. Bordeaux mixture and 
ammoniacal solution of standard strength were employed in 1891; 
ammoniacal solution of standard strength and Bordeaux of one- 
third strength in 1892.* 
MAHALEB CHERRY STOCKS. 
1891.— One row of 449 stocks was planted and treated with 
fungicides at the dates described for all the stocks on page 671. 
One-half, excepting controls, received six and the other three 
sprayings. One-half were treated with ammoniazal solution, the 
other with Bordeaux. As mentioned in Bulletin No. 3,8 where 
an account of this experiment has already been given, the lIcaf 
blight was not present in any considerable amount during this 
season and the efficacy of the two fungicides was not given a 
test of any severity. The treated portions, however, remained 
freer from disease than the untreated. 
1892.— The same row which had been budded in the fall of 
1891, as described subsequently, was treated this season in a 
manner precisely similar to that described for the pear stocks, 
page 671. Care was taken that the undersides of the leaves were 
wet by the spray and to accomplish this the Vermorel nozzle 
was directed upwards. On June 24 the first signs of 
leaf-blight were noticed upon the budded, untreated, stocks, 
the unbudded stocks remaining almost entirely free throughout 
the season. By July 16 the leaves of the untreated bcgan 
* See pp. 670, 671 for formule of all fungicides used. § Op. cit. p. 58. 
