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. 
ONE-SPRAY METHOD FOR CODLING MOTH, ETC. 
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). 
TaBLE XX.—Sound and wormy fruit from unsprayed, demonstration, and one-spray 
plats. Saugatuck, Mich., 1909. 
PLAT I. UNSPRAYED. 
Condition of fruit. PERSO E SCO PLEO Th MErOR TRA | ErePL a yee 
AVVORITY Sac cite ae See. Mees Bee ee PEF 663 752 605 166 946 1, 207 416 
SLT) Ghee rae Sree chee ees aw ee ee 3, 996 5,033 2,947 1, 340 1,805 2,676 2,213 
A) #21 Sf a NS Oe tne eee ee 4,659 | 5,785 | 3,552 7,006 |o 22750 3,883 2,629 
IPEMCent SOUNGEe saat tee ete Jae eae 85.76 | 87.00] 82.96 | 8897] 65.61 | 68.91 84. 17 
Total | Total 
sis - Tree Tree Tree Tree Tree 
Condition of fruit. for |percent 
16. 20. 21. 26. 33. plat. | sound. 
Aaya (oe ee Se Ge ADE hae ee ae ee 889 651 404 1,041 669)! (85409) ls eae: 
BS OUITT ete eee e cent aimee wrcrAeje cic asthe ene 1,926 | 2,632 1276) | 2) 321 TV, 301 || 295466) ko 2 cece 
PROUS Seta te i RGN a als eae 2 2,815 3, 283 1,680 3, 362 1I5( (AU BY Gy een eaos 
PER COMLISOMUG Mars = ae ckeee ban bons eelous aetete 68.14 | 80.17 75.95 | 69.03 WC tel eee 79 
PLAT II. DEMONSTRATION. 
wee ‘ Tree Tree Tree Tree Tree Tree Tree 
Condition of fruit. 101. | 102. | 105. | 106. | los. | 115. | 117. 
IWODMIY Gis Sauls eetinn saemaaa caso avalienicaeees le 120 122 48 75 96 72 15 
iste) ob a Ua [E Sema einer ie ce fetter, wri, Wiener one oe Pe di Mii ate erage 1,505 1,643 Pala?) 1,775 5,623 3,950 5,781 
Ta talit 8 kes eee mpewa hisses ajtcinmeneisicde 1,625 1,765 | 2,160 1,850 | 5,719 | 4,022 5,796 
PEK CON b SOUNGs occa ence Cancers emecocaceens 92.61 | 93.08 | 97.77 95, 94 98.32 | 98.20 99. 74 
