ONE-SPRAY METHOD FOR CODLING MOTH, ETC. 119 
to what extent russeting of the fruit might result from so liberal a 
use of the fungicide. The treatment for Plat III was identical with 
that for Plat I, except that Vermorel nozzles were used. It was 
desired to determine the comparative merits of a mist spray as against 
a coarse spray, and it will be noted that the quantity of liquids required 
per tree for the mist spray (Plat IIT) was somewhat less than one-half 
the amount necessary in the drenching work (Plat I). 
The results presented include all of the drop fruit throughout the 
season and the fruit from the trees at picking time in the fall. All 
apples were carefully examined as to worminess from the codling moth 
and as to injury by the plum curculio and lesser apple worm. Fruit 
from Plats I and III was badly injured by the apple blotch, which 
can be accounted for only by the omission of Bordeaux mixture from 
the treatment given immediately after the falling of the petals. 
Fruit from Plat II, which had been thoroughly drenched with Bor- 
deaux mixture using Bordeaux nozzles, was not noticeably more 
russeted than in the case of fruit from the demonstration plat and 
was free from apple blotch. Plat IV showed some infection from 
scab owing to the fact that it had not been sprayed with Bordeaux 
mixture before the blossoms opened. 
THE CODLING MOTH. 
In Table II are shown results of treatments of Plats I, ITI, 1V, and 
V as to injury from the codling moth. Plat I] is not here considered 
nor subsequently, as the point involved, namely, the effect on the 
fruit of a drenching spray of arsenate of lead and Bordeaux mixture 
after the falling of the petals, has already been indicated. There was 
not noticeably more russeting of the fruit on Plat II than on Plat IV 
which received the demonstration treatment. 
TaBLE I1.—Sound and wormy apples from one-spray, demonstration, and unsprayed 
plats. Siloam Springs, Ark., 1909. 
PLAT I. ONE SPRAY (BORDEAUX NOZZLES). 
Condition of fruit. Tree 1.| Tree 2.| Tree 3.) Tree 4.| Tree 5. | Tree 6. | Tree 7. | Tree 8. 
VOUT ements et Ae sete oot Pee SOL 703 522 419 118 181 222 286 315 
DOUMN Geers ces terrace sass cle cas Sesion 4,986 | 4,291 | 3,377 | 2,682} 3,265 | 3,540] 3,021 5, 128 
STO Ee cue ER Rae aos Soe oe at 5,689 | 4,813 |} 3,796 | 2,750 | 3,446] 3,762] 3,307 5, 443 
ICR CENT SOUNGE. (Bas. seen yoke es see 87.65 | 89.16 | 88.97 | 95.71 | 94.74] 94.19 | 91.36 94. 22 
> re ar Ta tg = 5 | aii 
Total 
Condition of fruit. Tree 9. |Tree 10./Tree 11.) Tree 12. | Tree 13. Total for per cent 
| plat. sound. 
WORK ers <een cian Sh eee ee 110 113 BU ate ote scence ee - B E20) | Seteen setae 
S{OTa EO (SS 28 oe aes oe ee ee ee eee FASO Zone ae Ok are sows nce wctcicicea ees AQK0320 | Ltee ae oer 
Aa) AM SS SRA eae ea eee oe Brood a er Ooeall ie; SOD! [acck os = a ]ueccicccec AS RD Rt nee 
Pencentisound:..- 205. .2k esse GOngoy edor alae AOGs OO Ee oats 6 |e a ta 2 el a bs. 92.76 
