194 
THE PLUM CURCULIO. 
Table XCV. — Results of spraying Lansingburg apples for the plum curculio, Anderson, 
Mo., 1908. 
IV.. 
V.. 
VI. 
Treatment. 
Homemade dust (lime 100 
pounds, bluestone 5 
pounds, Paris green 21 
pounds) 
Dates of applications. 
Commercial dust. 
Bordeaux mixture (4-4-50) 1 
plus i pound Paris green, 
Bordeaux mixture(4-4-50) 
plus 2 pounds arsenate of 
lead 
Untreated. 
15 2!> 
1.-.20 
3 23 
a« 
3 ft 
a ft 
1 255 
2' 189 
3 784 
4 240 
5 
1,1 
926 
1,037 
668 
574 
3,693 
3,57; 
1,397 
1,043 
757 
815 
1,047 
426 
1,205 
6,690 
3 0> 
Eh 
a 3 
§1 
2,185 
1,045 
5,657 
1,29" 
1,320 
1,777 11,504 
3,178 
2,15 
1,135 
1,438 
2,877 
2,875,10,785 
1,867 3,534 
2,846 
3,505 3,312 21,507 
1,072 
952 
942 
65 
723 
165 
718 
5,229 
1,985 
2,104 
1,873 
2,063 
2,448 
2,275 
3,453 
2,741 
2, 565 
<D w 
2.74 
5.82 
2.67 
1.04 
1.84 
18.25 
24.30 
25.15 
35.71 
4.91 
42.50 
49.70 
48.70 
50.16 
43.55 
51.51 
57. 05 
51. 86 
45.71 
55. 58 
5S. 26 
75.35 
64.40 
1.77 
3.57 
6.80 
4.02 
2.75 
1.08 
7.00 
9.58 
ft! 
> oS ft 
3.84 
47.81 
57.45 
As wall be noted, results, so far as preventing puncturing of fruit 
by curculio, were decidedly poor. Plat I, receiving 13 applications 
of a homemade dust, was even more severely injured than the 
block of unsprayed trees, a condition doubtless due to its location. 
Best results were obtained on Plat V, which had the usual demonstra- 
tion treatment, giving 57.45 per cent of sound fruit as against 
5.51 per cent of sound fruit on the unsprayed trees. 
The effect of the treatments on the curculio may be judged, per- 
haps, by the number of punctures per fruit. Thus, Plat I had an 
average of 6.22 punctures per fruit; III, 2.92; IV, 0.98; V, 0.78; and 
VI, 6.13. 
