8 
BULLETIN" 278, U. S. DEPARTMENT OF AGRICULTURE. 
preparations were prepared and diluted as given on page 2. The 
results against the codling moth are shown in Table IV. 
Table IV. — Sound and wormy apples from sprayed and unsprayed plats. 
[Poison test, Benton Harbor, Mich., 1912.] 
Plat 
No. 
Treatment. 
Tree 
No. 
Conditior 
of fruit. 
Wormy. 
Sound. 
Total. 
Per cent 
sound. 
I 
Arsenate of lead (paste), 2 pounds to 50 gallons 
1 
2 
3 
64 
14 
9 
4,430 
1,542 
4,494 
1,556 
888 
98.58 
Plat total 
99.10 
98.98 
87 
6,851 
6,938 
98.74 
Arsenate of lead (paste) commercial No. 1 (tri- 
plumbic), 2 pounds to 50 gallons lime-sulphur 
II 
1 
2 
3 
33 
84 
44 
874 
1,727 
1,115 
907 
1,811 
1,159 
96.36 
Plat total 
95.36 
96.20 
161 
3,716 
3,877 
95.85 
Arsenite of zinc (powder), f pound to 50 gallons 
lime-sulphur solution 
III 
1 
2 
3 
4 
20 
15 
734 
1,110 
744 
738 
1,130 
759 
99.46 
Plat total 
98.23 
98.02 
39 
2,588 
2,627 
98.52 
Arsenite of zinc (paste), lh pounds to 50 gallons 
IV 
1 
2 
3 
19 
27 
7 
1,387 
2,638 
486 
1,406 
2,665 
493 
98.65 
Plat total 
98.99 
98.58 
53 
4,511 
4,564 
98.83 
Arsenite of lime, homemade, 2 pints to 50 gallons 
lime-sulphur solution 
V 
1 
2 
3 
32 
75 
52 
680 
1,282 
1,201 
712 
1,357 
1,253 
95.50 
Plat total 
94.47 
95.85 
159 
3,163 
3,322 
95. 21 
Arsenate of zinc, homemade, at rate of 0.8 pound 
sodium arsenate to 50 gallons lime-sulphur so- 
lution 
VI 
1 
2 
3 
80 
261 
108 
1,030 
1,597 
1,257 
1,110 
1,858 
1,365 
92.79 
Plat total 
85.95 
92.09 
449 
3,884 
4,333 
89.63 
Arsenate of iron, c. p. (powder), | pound to 50 
gallons lime-sulphur solution 
VII 
1 
2 
3 
174 
413 
254 
942 
1,176 
1,228 
1,116 
1,5S9 
1,482 
84.41 
Plat total 
74.01 
82.86 
841 
3,346 
4,187 
79.91 
Arsenate of iron, homemade, at rate of 0.8 pound 
sodium arsenate to 50 gallons lime-sulphur so- 
lution 
VIII 
1 
2 
3 
228 
205 
537 
800 
970 
1,466 
1,028 
1,175 
2,003 
77.82 
Plat total 
82.55 
73.19 
970 
3,236 
4,206 
76. 93 
Arsenate of calcium, c. p. (powder), Jpound to 50 
IX 
1 
2 
3 
205 
95 
160 
1,672 
529 
847 
1,877 
624 
1,007 
89 03 
Plat total 
84.77 
84.11 
460 
3,048 
3.508 
86 8S 
X 
1 
2 
3 
257 
487 
744 
231 
274 
445 
488 
761 
1,189 
47 33 
Plat total 
36.01 
37.43 
1,488 
950 
2,438 
38 96 
