QNE-SPEAY METHOD FOE CODLING MOTH, ETC. 



89 



Table I. — Treatments and dates of applications for the codling moth and the plum 

 curculio. One-spray method. Fishersville, Va., 1910. 



Dates of application. 



Plat I. 



Plat II. 

 (One-spray method.) 



Plat III. 

 (Fnsprayed.) 



First application, Apr. 16-18 

 (as soon as petals fell). 



Second application, May 16. . . 

 Third application, June 22 



Not drenched. Vermorel 

 nozzles. Mist spray. Ar- 

 senate of lead, 2 pounds to 

 50 gallons commercial 

 lime-sulphur (1J-50). 

 Pressure, 200 pounds". 



do 



Drenched with arsenate of 

 lead, 2 pounds to 50 gal- 

 lons commercial lime-sul- 

 phur (li-50). Bordeaux 

 nozzles. " Pressure, 200-225 

 pounds. 



Commercial lime-sulphur 

 only (li-50). Not 

 drenched. No arsenical. 

 do 



Fnsprayed. 

 Do. 



do 



Do. 









Plat I was sprayed thoroughly three times but was not drenched. 

 Commercial hme-sulphur wash and arsenate of lead were used for 

 each applicatoin. Plat II (one-spray method) was thoroughly 

 drenched, Bordeaux nozzles and high pressure being used. This 

 plat received one application of arsenate of lead and commercial 

 lime-sulphur and two subsequent applications of commercial lime- 

 sulphur only. 



THE CODLING MOTH. 



In Table II is shown the total wormy fruit and fruit free from 

 injury by the codling moth for the entire season for the eight count 

 trees of each plat, the number of the trees in the figure agreeing with 

 those in the table. 



Table II. — Xumber of sound and wormy apples for each tree from demonstration, one-spray 

 and uns prayed plats. Fisherville, Va., 1910. 



PLAT I. LIME-SULPHUR DEMONSTRATION. 



Condition of 

 fruit. 



Tree 

 1. 



Tree 

 2. 



Tree 

 3. 



Tree 



4. 



Tree 

 5. 



Tree 

 6. 



Tree 



7. 



Tree 

 8. 



Tree 



9. 



Tree 

 10. 



Total 

 for 

 plat. 



Total 



per 



cent 



of 



sound 



fruit. 



Wormy 



Sound 



Total 



Per cent sound . 



141 

 21,324 



29 

 9,131 



47 

 9, 221 



80 

 9,445 



35 

 8,749 



27 

 6,560 



31 

 6,373 



72 

 6,980 



22 

 5,622 



12 

 2,566 



496 

 85,971 





21,465 



99.34 



9,160 

 99.68 



9,268 i 9,525 

 99. 49 99. 16 



8, 784 

 99.60 



6,587 

 99.59 



6, 404 

 99.51 



7,052 

 98.97 



5.644 

 99.61 



2,578 

 99.53 



86, 467 



"99." 42 



PLAT U. ONE-SPRAY METHOD. 



Wormy . 

 Sound... 



Total..... 

 Per cent sound 



82 

 7,282 



88 

 6, 543 



63 

 8,044 



63 

 7,539 



6 

 2,023 



29 



3,372 



33 



3. 777 



77 

 5,873 



41 



3,065 



23 

 3,127 



505 

 50, 645 



7,364 

 98.88 



6,631 

 98.67 



8,107 

 99.22 



7,602 

 99.17 



2,029 

 99.70 



3,401 

 99.14 



3,810 

 99.13 



5,950 

 98.70 



3,106 

 99.68 



3,150 

 99.27 



51,150 



99.01 



PLAT III. FNSPRAYED. 



Wormy . 

 Sound"... 



. 781 

 .; 5,159 



Total ! 5,940 



Percent sound, j 86.85 



423 



2,331 

 81.84 



487 

 3,067 



480 

 2,935 



3.554 

 86.29 



3,415 

 85.94 



355 296 812 

 1,874 I 1,329 j 4,413 



2,229 1,625 

 84.07 ' 81.78 



5,2-25 

 84.45 



188 

 1,168 



421 

 2,285 



776 5,019 

 3,227 27,365 



1,356 

 86.13 



2,706 4,003 32,384 

 84. 44 80. 61 



84.50 



