ONE-SPRAY METHOD FOR CODLING MOTH, ETC. 139 
Plat I was left unsprayed for purposes of comparison. Plat II 
(demonstration block) received four applications in all, the first before 
blooming but after cluster buds had opened, to protect the fruit from 
apple scab, which during some seasons in the lake region is very 
troublesome. Plat III (one-spray block) received the first scab treat- 
ment of Bordeaux mixture only and an additional treatment with 
arsenate of lead only at the rate of 1 pound to 50 gallons water imme- 
diately after the falling of the petals. This treatment was immediately 
followed by an application of Bordeaux mixture to prevent scab 
infection, as it was considered unsafe to apply the fungicide so 
excessively as the one-spray method required in the use of the arsen- 
ical. Plat III received two subsequent applications of Bordeaux 
mixture only, as shown in the schedule of applications, to further 
insure freedom from apple scab. 
THE CODLING MOTH... 
The percentages of wormy and sound fruit for the respective plats 
for the season are shown in Table XX, and the numbers of trees in 
the table agree with those in the diagram of the orchard (fig. 37). 
TaBLeE XX.—Sound and wormy fruit from unsprayed, demonstration, and one-spray 
plats. Saugatuck, Mich., 1909. 
PLAT I. UNSPRAYED. 
eas a Tree Tree Tree Tree | Tree Tree Tree 
Condition of fruit. 1. 3. a 7. 9. 10. 13. 
ViiGicrep a8 Sets Soma ee Cee eee oe 663 752 605 166 946 | 1,207 416 
SH Meer ee oe nae Ores. hee SE Soe hee 3,996 | 5,033 | 2,947 1,340 | 1,805 | 2,676 | 2,213 
PBL SR ats oe ane he ena seen 4,659 | 5,785] 3,552 | 1,506] 2,751] 3,883 2,629 
PPR CCRMESOUlIC eee - oe coe o cena see coeite - te 85. 76 87. 00 82. 96 88. 97 65. 61 68. 91 84. 17 
Total | Total 
sais ; Tree Tree Tree Tree Tree 
Condition of fruit. ; ; ie for percent 
16. | 20. 21. 26. 33. plat. | sound. 
Bek | | = | ¥4| ee pee 
WOK; ss seca a oe dee Se eee 889 | 651 404 | 1,041 669 | 8,409 |.....-.- 
SORA e oe eee oe ne Bene ann cces seit ese 1,926 2,632 1,276 2,321 1 SO1's |. 29) 4660 | Sa sage ee 
| 
SGC (eg eae ee ae a a | 2,815 3, 283 1,680 3, 362 NE CU ae Viney Gal lage eee 
IPEMnCenbSOUNd ee esce oot eee Stic cco meter zcte | 68.14] 80.17] 75.95 | 69.03} 66.03 |....-... 77. 79 
PLAT II. DEMONSTRATION. 
| | 
ares : Tree Tree Tree Tree Tree Tree | Tree 
Condition of fruit. 101. 102. 105. 106. | 108. | 115. 117 
“Cos uehy eS RT ioe Aah ee 120 122 48 75 | 96 | 72 15 
‘UATETA ab ein S R a 1,505 | 1,643 | 2,112} 1,775 | 5,623 3,950| 5,781 
That TOMI eek el hc ae ee 1,625 | 1.765 | 2,160} 1,850) 5,719| 4,022 | 5,796 
TELSTer Svein HGiay ih Us | leet ane rae gp: eden oy CR =| 92.61 | 93.08 | 97.77) 95.94] 9832] 9820) 99.7 
