ONE-SPRAY METHOD FOR CODLING MOTH, ETC. 125 
A comparison of the figures for the different plats in Table V shows 
as to calyx entrance for the two broods about the same degree of 
protection in the case of Plats I and IV, while as between Plats I and 
III, both involving the one-spray method, there is a difference in 
favor of a coarser as against a mist spray of 1.14 per cent of the total 
crop. The figures on side entrance show that neither of the one-spray 
treatments afforded any protection to the side of the fruit, while the 
demonstration treatment saved 4.57 per cent of the crop by preventing 
side entrance. In comparing the total efficiency of the different 
treatments, it will be seen that there was a saving of 26.02 per cent of 
the crop in Plat I, 23.29 per cent in Plat III, and 31.38 per cent in 
Plat IV. The superiority of the demonstration treatment was mostly 
due to the prevention of side worminess. 
In order to determine what effect the respective treatments might 
have on the proportion of fruit which dropped and that which 
remained on the trees until picking time the following table (Table VI) 
was prepared from the data in the previous tables: 
TaBLE VI.—Comparison of amounts of drop-fruit during season on the several plats. 
Siloam Springs, Ark., 1909. 
Fruit from ground. 
Num- First brood. Second brood. 
Plat No. ber of 
trees. 
| | Letsie Per 
Wormy.| Sound.) Total. | cent | Wormy. Sound.| Total. | cent 
sound. sound. 
} 
Lie eke eee ae ee il 26 | 10,202 | 10,228 | 99.7. 1,449 | 7,663 9,112 84. 09 
11 TR SE eee oe ee 9 25] 5,314 | 5, 339 99. 53 1,249 5, 997 7, 246 82.76 
1 IV See oe oes Bee See Il 22) 8,970] 8,992 | 99.7. 240 | 5,513 5, 753 95. 82 
Wings spect sept Ase a arat ns 13 945 | 8,109 | 9,054 | 89.56 5,471 5, 742 | 11,213 51.20 
| 
Fruit from tree. Total fruit. 
x Eepeeda Rew FS) ly sPer 
um- | | | l | centage 
Plat No. ber of | Per | | | Per | of drop- 
trees. | Wormy.| Sound.| Total. | cent |Wormy.}) Sound. | Total. | cent | fruit. 
| sound. | | sound. | 
| 
| | | | 
11 1,645 | 22,167 | 23,812 | 93. 09 3,120 | 40,032 | 43,152 | 92.76 44.81 
9 1,371 | 12,578 | 13,949 | 90.17 2,645 | 23,889 | 26,534 90. 03 47.42 
11 345 | 17,361 | 17,706 | 98. 05 607 | 31,844 | 32,451 | 98.12 45. 43 
13 1,704 | 2,457) 4,161 | 59.04 8,120 | 16,308 | 24,428 | 66.76 82.96 
As will be noted, the highest percentage of drop-fruit was on the 
unsprayed plat, namely, 82.96, with 47.42 per cent drop-fruit from 
Plat ITI. Plats I and IV (the one-spray and demonstration treat- 
ments) show a difference in favor of the demonstration plat of only 
0.62 per cent, an amount practically negligible. The percentage of 
drop-fruit, including fallen fruit from all causes, is shown, but it 
should be remembered that fruit from all plats, except the check, 
was largely protected from fungous troubles by applications of Bor- 
deaux mixture. 
76861°—Bull. 80, pt. 7—11——3 
