DUSTING AND SPRAYING EXPERIMENTS OF 1918 AND 1919. 



25 



TABLE IX. SUMMARY OF RESULTS OF DUSTING AND SPRAYING EXPERIMENTS 



WITH APPLES. 



Key to abbreviations: 



L-S Dilute lime-sulphur. 



S-W. Dry L-S Sherwin-Williams Dry lime-sulphur. 



Dow Dry L-S Dow Dry lime-sulphur. 



B. T. S. B. T. S. 



Ld. Ars. Lead arsenate. 



Cal. Ars. Calcium arsenate. 



Mag. Ars. Magnesium arsenate. 



