® 
208 Report oF THE BoTANIST OF THE 
LEAF CURL. 
(Haoascus deformans ( Berk.) Eckl.) 
Leaf curl has given very little trouble. Over the greater part 
of the district it is reported as occurring only to a slight extent. 
Correspondents at Stockport, Columbia Co., and Annandale, 
Ulster Co., report it severe; but it is possible that in these cases 
the fungous leaf curl may have been confused with the work of 
plant lice.?° 
It appears that the weather conditions in early spring exert a 
a marked influence upon leaf curl. In 1898 it was very destrue- 
tive. 7 
YELLOWS. 
This disease is common throughout the Hudson Valley and in 
some localities very destructive. from year to year it fluctuates 
somewhat in virulence, but may be depended upon to appear to a 
considerable extent every season. It is one of the most trouble- 
some peach diseases in this section. 
FRUIT ROT. 
(Monilia fructigena P.) 
Usually this disease is common, but in 1899 it was scarce 
because there*was little fruit to rot. It has been reported from 
Tarrytown, Milton, Ghent, Middle Hope and Washingtonville. 
LEAF TIP-BURN. 
In a small orchard of young trees at Monsey, Rockland Co., 
a leaf trouble was observed which may be called tip-burn. The 
tips and margins of the leaves on the new wood appeared water- 
soaked*? and transparent. Upon drying, the diseased portions 
became yellowish white. The trees were of the variety Red Cheek 
29 Some fruit growers know the Haoascus disease by the name “ red blister,” 
and the work of aphides by the name “ leaf curl.” This tends to confusion. 
30 The water-soaked condition may not be a character of the disease, but 
due to a rain which occurred a short time before the observations were made, 
