New YorK AGRICULTURAL EXPERIMENT STATION. 181 
The orchard contains quite a variety of soils and yet the disease 
is equally destructive in all parts; so it does not seem to be 
wholly a question of soil. We should suspect the trouble due 
to imperfect union of stock and bud were it not for the fact that 
some trees of the same lot were planted at Lodi and have there 
done well. Perhaps it is brought about by the combined effect 
of uncongenial soil, uncongenial climate and imperfect union. 
TRUNK AND Brancu Ingury.—In Bulletin 167, page 286, we de- 
scribed an apricot trunk disease found in the Hudson Valley. 
A similar disease has been observed at Lodi and Geneva. At 
Lodi vigorous trees in full foliage suddenly wilted and died 
early in June. At the surface of the soil the bark on the south- 
west side of the trunk was dead and shrunken to the wood. 
In the Station orchard two trees of Japanese apricot, variety 
Bongoume, show several large areas on trunk and larger 
branches on which the bark is dead and shrunken to the wood. 
The dead areas bear numerous pycnidia of Cytospora.'® 
At Lodi we saw large, vigorous apricot trees, some of the 
larger branches of which were dying. The only apparent cause 
was Cytospora which was growing profusely on the bases of the 
dying branches, thickly covering them with its pycnidia. It is 
our opinion, that in this case at least, the Cytospora was parasitic. 
Brown Spor (Helminthosporium carpophilum Léy.)—We have 
occasionally seen this disease at Geneva and Lodi during the past 
two seasons. It attacks the fruit, producing cinnamon-brown, 
slightly-elevated spots which have a reddish tinge when young. 
The apricot disease described and figured by Bailey was prob- 
ably brown spot. Tor a further discussion of brown spot see 
page 192. . 
OTHER Dismases.—There has been some fruit rot caused by 
Monilia fructigena, but much less than usual. We have seen no 
black spot of the fruit, Cladosporium carpophilum, no powdery 
mildew and no leaf spot of any kind. 
*For a discugsion of the Oytespora on stone fruits, see page 323. 
*Bailey, L. H. Apricot Growing in Western New York. Cornell Uniy, 
Exp. Sta.’ Bul. TF 277. 
