﻿UNITED STATES DEPARTMENT OF AGRICULTURE 



DEPARTMENT BULLETIN No. 1371 



Washington, D. C. T January, 1926 



EFFECTIVENESS AGAINST THE SAN JOSE SCALE 



OF THE DRY SUBSTITUTES FOR 



LIQUID LIME-SULPHUR 



By 



W. S. ABBOTT, Entomologisi, and JULIAN J. CULVER, Assistant Entomologbl, 



Enforcement of the Insecticide Act, Bureau of Entomology, and 



W. J. MORGAN, Associate Chemist, Insecticide and Fungjdde Laboratory, 



Miscellaneous Division, Bureau of Chemistry 



CONTENTS P.J, 



Introduction 1 



Materials Used ....■ 5 



Liquid Lime-Sulphur ....................... 5 



Records Taken ......................... 5 



Percentage of Gintrol 6 



Dry Calcium-Sulphurs 6 



Dry Sodium-Sulphur Compounds 16 



Dry Barium-Sulphur Compounds ....21 



General Summary 25 



Literature Cited 25 



WASHINGTON 

 GOVERNMENT PRINTING OFUCE 



1926 



