PEACH SCAB AND ITS CONTROL. 5 
Table I. — Peaches and nectarines — trees, production, and value in the United States. 
1910 
1909 
1899 
Geographic division. 
Trees of 
bearing 
age. 
Trees not 
of bearing 
age. 
Produc- 
tion. 
Value. 
Produc- 
tion. 
Number. 
94, 506, 657 
Number. 
42, 266, 243 
Bushels. 
35, 470, 276 
Dollars. 
28,781,078 
Bushels. 
15,432,603 
Groups of States: 
New England 
723, 810 
6,056,690 
11,035,119 
13,265,526 
20, 583, 445 
10, 312, 768 
22,284,966 
1,605,285 
8,639,048 
572, 237 
5,759,925 
6,972,375 
2, 582, 028 
6, 137, 901 
3, 865, 232 
8, 734, 552 
1,696,111 
5,945,882 
406,903 
3,201,493 
5, 120, 841 
1,643,257 
5,571,628 
5, 775, 799 
3,279,545 
940, 168 
9, 530, 642 
632,411 
4, 018, 034 
5, 172, 957 
1,250,944 
4, 888, 459 
4, 098, 776 
2, 761, 044 
1,071,446 
4, 887, 007 
104, 737 
1,231,242 
Eastern North Central 
716,670 
212 932 
Western North Central 
1,412,471 
549,226 
2,192,353 
267, 365 
Western South Central 
Mountain 
8,745,607 
Though the nectarine is represented in these figures, it is relatively 
so unimportant that for purposes of rough estimation it may be left 
out of consideration. According to these estimates, in 1910 there were 
in the United States 94,506,657 bearing peach and nectarine trees, 
which, during the preceding year, yielded a crop valued at $28,781,078. 
The greater portion of the trees in the South Atlantic, eastern South 
Central, western South Central, eastern North Central, and Middle 
Atlantic States, estimated at 70,272,988, are in sections subject to 
serious losses from scab. Those of the New England and western 
North Central States, numbering 13,989,336, with the exception of 
those in the more southern areas, as Missouri (6,588,034) and Kansas 
(4,394.894), are generally distinctly less seriously affected, while the 
10,244,333 trees of the Mountain and Pacific States, only 10.8 per 
cent of the total number, may be classified as free from economic 
injury by scab. 
Inasmuch as any accurate computation of the losses occasioned 
yearly by the disease would of necessity be based upon such unde- 
terminable factors as actual losses and expenditures for preven- 
tive treatments, a concrete estimate is scarcely profitable. The 
experience of the years immediately preceding the development of 
control measures, however, emphasizes the potential damage of the 
disease. During this period, owing to the combined ravages of 
brown-rot and scab, commercial peach growing in the southern por- 
tions of the United States suffered a severe check, while even in the 
eastern and central sections plantings of certain varieties had to be 
discontinued or confined to the higher altitudes in order to escape 
scab. With the improved standards of excellence which successful 
summer spraying has instituted and with the cumulative develop- 
ment of the disease in unsprayed orchards, it is evident that if no 
scab control were available the disease would be a serious menace to 
successful commercial peach culture in many sections of the southern, 
eastern, and central United States. 
