BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 
43 
Table 15. — Progress in barberry eradication by states, fiscal year /.'>•>'/ 85 
State 
Total 
properties 
cleared of 
bushes 
Total 
barberries 
destroyed 
Territory 
covered 
Men 
employed 
Employ- 
ment, 
P. W. A. 
Number 
95 
1,033 
133 
872 
1,182 
232 
102 
15 
40 
11 
1,026 
26 
1,229 
2 
41 
Number 
23, 696 
16,204 
3,037 
22,717 
113,981 
4,983 
3,626 
1,216 
140 
330 
137,009 
142 
60,405 
187, 863 
Square miles 
484 
4,430 
359 
2,537 
622 
343 
2,860 
284 
801 
557 
1,836 
434 
2,987 
358 
30 
Number 
48 
269 
39 
205 
L35 
76 
32 
12 
93 
48 
118 
22 
120 
26 
i 14 
Man-hours 
12,069 
Illinois -.- 
48, 126 
Indiana 
12, 031 
Iowa 
61,952 
39, 750 
24, 825 
3,938 
4,697 
Nebraska .. 
16,887 
North Dakota 
6,218 
Ohio 
45, 659 
South Dakota 
8, 171 
108, 402 
Wyoming 
5,413 
Virginia - 
1729 
Total 
6,039 
575, 356 
18, 922 
1,257 
398, 867 
1 40 additional men were given 2,486 man-hours of employment in connection with the barberry-eradi- 
cation program by the Virginia Emergency Relief Administration. 
Common salt was most generally used for eradication during the year. Less 
than 1 percent of the barberry bushes were found to survive proper treatment 
with salt. From 10 to 15 pounds is the recommended application for a bush from 
4 to 6 feet high. Bushes are dug only where the salt treatment would endanger 
nearby trees and shrubbery. 
Sodium chlorate alone or mixed with sodium chloride proved an effective 
killing agent when applied as a spray and drench, particularly in connection 
with eradication of native barberries (Herberts Ganadensis) in southwestern 
Virginia. A gallon of the solution (containing 2 pounds of chemical) was 
found sufficient to cover 40 square feet of ground surface. Other chemicals 
used experimentally have not proved as effective, economical, readily avail- 
able, and safe to handle as common salt. 
INFORMATIONAL ACTIVITIES 
The various informational activities constituted an important part of the 
preeradication work during the year and included demonstrations a1 local, 
county, and State fairs, news articles in local papers, illustrated talks before 
rural and urban school groups, and the distribution of illustrated pamphlets!, 
lesson plans, and circular letters. 
During the year school children reported a total of 689 properties on whi 
barberries were growing, resulting in the eradication of more than 1 - 
bushes. The interests of school children and adults have been encourag* ; 
through a carefully organized educational program in each of the States, 
a regular part of the field program during the year, brief illustrated tal 
were given before 5,933 schools in 70 counties. Results of this work by States 
are shown in table 16. 
Table 16. — Results of informational work by States, fiscal year 1935 
State 
Coun- 
ties 
covered 
on 
school 
work 
Bar- 
berry 
loca- 
tions 
re- 
ported 
Bar- 
berries 
de- 
stroyed 
as re- 
sult 
of re- 
ports 
People 
reached 
through 
infor- 
ma- 
tional 
activ- 
ities 
State 
Coun- 
ties 
covered 
on 
school 
work 
Bar- 
berry 
loca- 
re- 
ported 
Bar- 
berries 
de- 
stroyed 
suit 
Of re- 
ports 
reacht d 
infoi - 
ma- 
aeti\ - 
it .< E 
Colorado 
Illinois 
Number 
8 
6 
5 
10 
4 
2 
8 
8 
Number 
4 
79 
30 
175 
189 
66 
11 
17 
Number 
56 
674 
108 

14, 030 
179 
342 
17 
Number 
3,835 
15,591 
113,800 
26, 855 
86, 306 
10. 003 
25.000 
15,320 
North Dakota 
Ohio 
Number 
7 

6 
1 
5 
Xu m '" r 
.' 
67 
4 
Number 
2 
13 
894 
3 
' 
Indiana 
South Dakota.. 
Wisconsin 
Wyoming 
Toi ' 
2 • • 
Iowa... 
Michigan 
Montana 
Nebraska. 
70 
689 
' 18. 140 
' This figure represents bushes destroyed on properties actually reported by children. Often the repi rt 
of 1 bush is indirectly responsible for the eradication of many in the surrounding territory 
