PEACH SCAB AND ITS CONTEOL. 49 



Experiments in 1912. 



treatment. 



A summary of the treatments of the individual plats and results 

 therefrom is given in Table X. No plat contained less than 40 trees. 



Table X. — Summary of treatments and results in spraying experiments, Cornelia, Ga., 



. 1912. 





Treatments. 



Results. 





Spray used.' 



Dates of 

 application. 2 



o 



§ 



3 



O 



Scabbed— 3 



-d 





Variety 

 and plat. 



ft . 



03 .o 



1 



ft • 



03.2 

 -a d 



.Sf 



% 



\ 



o 

 O 





1 



3 



03 



Carman: 



1 



2 



3 



AlAlime... 

 ...do 



AUSp.... 

 AlAS-bl-s. 

 ...do 



Sp 



S-bl-s... 

 ...do.... 



(l)Apr. 30 



(2) May 13-14 



(3) June 1 



(1) Apr. 23-24 



(2) May 15-16 



(3) July 2 



(1) Apr. 23 



(2) May 14 



(3) June 18 



f 10 

 10 



5,598 

 7,941 



P.c. 

 7.3 



8.2 



P.C. 



0.2 

 .4 



P.c. 











P.C. 



7.5 

 8.6 



P.c. 



5.5 

 4.2 



P.c. 



94.5 

 95.8 



4 







...do 



















5 



do 



Al&S-b 1-s. 





















6 









I 10 

 10 



7,659 

 2,396 



51.4 

 39.7 



35.3 

 3.4 



.9 

 



87.3 

 43.1 



22.7 

 2.5 



77.3 



Elberta: 

 9 



9 A... . 



Al&lime... 

 ...do 



AUSp.... 

 ...do 



Sp 



...do 



97.5 



9B 



do 



...do.< 



...do.<... 



















10 



11 



...do 



Al&Sp 



Sp- 



do 



10 



5,791 



45.1 



52.2 



.5 



97.8 



5.0 



95.0 



12 





AUS-b 1-s. 



'AUS-b'i-s! 

 ...do 



S-bl-s... 



...do 



...do 



...do 



6 

 10 

 10 



3,294 

 5,937 

 7,620 



65.4 

 47.4 

 63.3 



6.2 

 49.2 

 5.5 



.03 

 1.2 



.05 



71.6 

 97.8 

 68.8 



7.6 

 8.3 

 2.8 



92.4 



13 



14 



14 A.. 



Al&lime... 



...do 



...do 



91.7 

 97.2 



15 



Control 







11 



4,400 



32.7 



63.1 



3.1 



98.9 



31.6 



68.4 



ISA 



..do 









Belle: 

 16 





AUS-b 1-s. 

 "AUSp.".'.'; 



S-bl-s... 

 ...do 



Sp- 



...do 



















17 



18 



AlAlime... 



7 



2,015 



35.9 



60.0 



3.3 



99.2 



5.9 



94.1 



19 





















20 



20A 



...do 



...do 



AUS-b 1-s. 

 ...do 



S-bl-s... 



Sp- 



...do 



7 



3,239 



68.5 



7.2 



.2 



75.9 



2.8 



97.2 



21 



...do 



AUSp 



7 

 7 



2,529 

 2,077 



60.2 

 24.6 



6.1 

 71.2 



.03 

 3.3 



66.3 

 99.1 



3.7 

 9.3 



96.3 



22.. . 





90.7 













1 Abbreviations for sprays used: AI=Arsenate of lead paste (diplumbic), IJ pounds in 50 gallons. 

 Lime= Stone lime, 3 pounds in 50 gallons. Sp= A proprietary sulphur paste, 5 pounds in 50 gallons (except 

 on plat 9B) a preparation consisting of finely divided sulphur (45 to 55 per cent sulphur guaranteed) with a 

 small amount of organic adhesive material in suspension in water. S-b r-s= Self-boiled lime-sulphur, 8 

 pounds of lime and 8 pounds of sulphur in 50 gallons. 



2 The treatments were made, as nearly as feasible, (1) 10 days after the petals fell, (2) one month after the 

 petals fell, and (3) one month before the fruit ripened. 



3 Slightly scabbed frviits included those bearing from one to a few scattered, inconspicuous spots; com- 

 mercially scabbed, those sufliciently marred to detract from their market value but not to render them 

 immerchantable; and badly scabbed, those rendered nearly or wholly unmerchantable by excessive scab 

 infection. 



* Sulphur paste, 8 pomids in 50 gallons. 



The condition of the experimental plats is briefly described as fol- 

 lows: 



Plats 1-6. — Eight-year-old Carman trees, well grown, but badly neglected and 

 suffering from lack of pruning, cultivation, and fertilization. Fertile clay-loam soil. 

 Orchard elevated and slightly rolling, with excellent air and surface drainage. Had 

 received an imperfect winter application of lime-sulphur. Fairly well pruned in 

 early spring and cultivated throughout the season. Crop good. 



