93 
PEACH YELLOWS. 
This malady has been more than usually prevalent in parts of the 
eastern United States. There was great complaint of premature fruit 
in the mountains of western Maryland; on the upper part of the Chesa¬ 
peake and Delaware peninsula; in portions of Pennsylvania and New 
Jersey; in Connecticut, and at Fennville, Mich., where they have 
neglected to remove diseased trees. The disease was also found for the 
first time at Ann Arbor, Mich. This is a profitable peach region, some¬ 
what isolated from other peach districts of the State. Cases to the 
number of more than 150 were discovered in midsummer. They were 
in ten different orchards, and in one or two the evidence indicated that 
the disease had been present more than one year, probably two or three 
years. The disease seems to have broken out first in the orchard of J. 
D. Baldwin, in trees brought from New Jersey. Seventy-five diseased 
trees were removed from this orchard and forty-five from an adjoining 
one. All affected trees have been destroyed, and a vigorous effort will 
be made to prevent the extension of the disease. 
Examinations in early spring of trees known to have been healthy 
the preceding autumn showed that it is possible to diagnose a certain 
number of cases before the trees blossom, but not all of them. The first 
symptoms of the disease may appear at any time from early spring to 
late autumn. 
CLUBBED BRANCHES. 
Complaints have been received from Michigan and New York of a 
nursery trouble which renders peach trees unsalable without perma¬ 
nently injuring them. The terminal buds are killed, and side buds 
push, giving to the top a branched, stunted, clubbed appearance, not 
unlike that occurring naturally in certain varieties, e. of Hinman and 
Garfield. The injuries appear to be done in May or June, and speci¬ 
mens were received too late in the season to determine the cause. This 
trouble has been present in both States for at least two years. Whole 
blocks of trees may be affected. They are said to make good roots and 
to grow out of the trouble the following season. 
In specimens sent in more recently from Ohio many of the secondary 
branches were much thickened at the base, very spongy, and easily 
compressed. A microscopic examination showed many dry cavities in 
the xylem cylinder and an almost complete absence of lignificatiou, the 
characteristic stains with lignin reagents being confined to the vicinity 
of the ifitli and to a few scattered bundles of wood fibers. A large 
number of trees in the middle of a nursery were seriously injured. 
STEM AND ROOT TUMORS. 
Irregular, tuberform, rough, warty outgrowths on the stem and roots 
of the peach at or just beneath the surface of the earth have been un¬ 
usually common in nursery stock this year. Specimens were collected 
16768—No. 2-—3 
