ONE-SPRAY METHOD FOR CODLING MOTH, ETC. 139 
Plat I was left unsprayed for purposes of comparison. Plat IT 
(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 XVII, and the numbers of trees in 
the table agree with those in the diagram of the orchard (fig. 37.) 
TaBLE XVII.—Sound and wormy fruit from unsprayed, demonstration, and one-spray 
plats. Saugatuck, Mich., 1909. 
PLAT I. UNSPRAYED. 
Tree Tree Tree Tree Tree Tree Tree 
Condition of fruit. 1. 3. 4. 7. 9. 10. 13. 
TVG) a a nt oe 663 752 605 166 | 9461 1,207 416 
SC TaG ear RMP oad oye ein Ce eee ai 3,996 | 5,033 | 2,947] 1,340 | 1,805] 2)676| 2,213 
TUN | Wee ante CR, oper Mane San Ce 4,659 | 5,785 | 3,552| 1,506 | 2,751 | 3,883| 2,629 
BR GOT SOUT Oley afters alas seater arate eee lar 85.76 | 87.00 | 82.96 | 88.97 | 65.61} 68.91 84.17 
Total | Total 
Condition of fruit. Tree Tree Tree Tree Tree for |per cent 
16. 20, 21. 26 33 
plat. | sound. 
VVC Sheth eres <AAS Scorn DeSantis eSbe oe LG anes 889 651 404 | 1,041 669°} °8).409)}- 25-2... 
Bound! se ce se sons eee tecees a eee a eerie (O26e pee nboet ee k27O) | 2asak) ote SON 2os466) le 2a ae 
Tate tee ae sie ee RR Se 2,815 | 3,283 | 1,680] 3,362 | 1,970 | 37,875 |........ 
Percent Sound sacs ect ee Leen eee ans 68.14 | 80.17 75. 95 OOSOS8n ee bbs 0sy |aaeee ee 77.79 
PLAT II. DEMONSTRATION. 
eae : Tree Tree Tree Tree Tree Tree Tree 
Eoainea os fruit. Hie, sects CO 105s 1060 | OS. Panis, | any, 
ae |— 
RV OI Vina = is crs see are wis Sears & aleve g/atisic SOS: 120 122 48 75 96 72 | 15 
SOUL eas eae ame eee arg ee Se Ok cies nts 1,505 1, 643 Pat head a FE FG) 5, 623 3, 950 5, 781 
Obaleaasee sae caee meee cee Beenie s core 1, 625 1,765 2, 160 1, 850 5,719 4,022 5,796 
BO MCeHUSOTIE Ole orem a amie aerate ae eae a cies. 2 92.61 93.08 | 97.77 95. 94 98.32 | 98.2 99.74 
