194 THE PLUM CURCULIO. 
Taste XCV.—Results of spraying Lansingburg apples for the plum curculio, Anderson, 
Mo., 1908. 
anne Saati ice New las a) + ¢ 
Dates of applications. 5 ee FI = 
aaa B85, | Bin || ecules 
On to 22) ae(sg 
sigs [be |22 (Fz 
; Treatment. : BIS |8ol]laqag|.2 
S % | 28 Pag] 78 | 28 8s | 
2 TAPS al eal cal a |ge8] s@| 26 [Bes 
3 EIR SIBISSR SSS SHE) & 1S SablS | o7 |Saa 
ae Ali IS/5/5 15154 \4\<4 lao} a a a a a < 
ig hee Homemade dust (lime 100)| i a cee ravi - o =< <== 
x S A 5 mle) ecto ote creel] |S Se ten||- oc s 
pounds, bluestone 5 \/o4l14'95] 8/16/25] 6|15|29| 8|19/27| 5 3| 784  763| 5,657] 2. 67|....-. 
pounds, Paris green 2! 4| 240| 215| 1/297] 1.04 
< ’ MS IO 
pounds)...--....------- 5| 380} 373] 1,320] 1.84]...... 
1,848] 1,777|11,504].._..- 3.84 
bal 1| 926] 757| 3,178| 18.25]...... 
Nba 2| 1,037] 785] 2,157| 24. 30|_.._.. 
Pi s2|Commercialidusteeos-- a4. (24/14/25) 8/16/25) 6/1529) 8)19)27) 4 3 668} 500} 1,135) 25.15)...... 
4, 574) 369] 1,438] 35. 71]...... 
5 488 464) 2,877| 4.91)....-.. 
3, 693 2,875 10, 785 ee 22.15 
1 640} 368) 789] 42. 50}...... 
2) 835 420 762) 49. 70|.....- 
Vise Bordeauxmixture(4-4-50)\|51 16 5|_ los. _|14 3|° 772) 396) ° 698), 48, 70|ccoeee 
plus $ pound Paris green{ |~ win tiie Heel Va a 4, 309} 154) 337] 50.16/...... 
5| 427) 241) - 419). 43: 55)-Soece 
6 
oo 
[w) 
ez) 
Oe ee aeea ——<—— 
| 1] 1,397] 600) 1,072] 57. 05 : 
| ! 2) 1,043 502 952) 51. 86]- 2-2... 
V sees Bordeaux mixture(4-4-50)| 8) (757/411). 942) 45. 71 2c 28. 
lus 2 pounds arsenate of +}21/15]. .| 5). ./23)..|14!..| 3,28}. .|_. 41 815} 362) 657) 55.58 is 
(=i: \6 been eo eee as 5} 1,047} 437 723) 58226). 5as2< 
6| 426 105 165|/27a950] ese 
7| 1,205} 429) 718] 64. 40)...... 
6,690] 2,846] 5,229]... 57. 45 
1 169 166) 1,985) 1.77|..---- 
2)’ 308) 297) 2,104) 3.57).-.-.. 
Si 235) ° 219) 1873} 16280|2ee-—- 
4) 298) 286] 2,063] 4.02).....- 
Wba=e| Umtreateds=- 2 o5--2-! ee FS |e |e (er Pe |= 9) De fet feet ea Be 5} 400) 389) 2,448) 2. 75)...--- 
6} 368} 364) 2,275) 1.08)....-- 
| 7 585| 544! 3,453] 7. 00)...--- 
8 516) 481) 2,741). 6. 78).----- 
9} 626) 566] 2,565) 9. 58)...-.- 
3,005|13, o2|21 507) peeee= 5.51 
As will be noted, results, so far as preventing puncturing of fruit 
by curculio, were decidedly poor. Plat I, receiving 13 applications 
of a homemade dust, was even more severely injured than the 
block of unsprayed trees, a condition doubtless due to its location. 
Best results were obtained on Plat V, which had the usual demonstra. 
tion treatment, giving 57.45 per cent of sound fruit as against 
5.51 per cent of sound fruit on the unsprayed trees. 
The effect of the treatments on the curculio may be judged, per- 
haps, by the number of punctures per fruit. Thus, Plat I had an 
average of 6.22 punctures per fruit; III, 2.92; IV, 0.98; V, 0.78; and 
Vie te. 
