6 



CIRCULAR 356, U. S. DEPT. OF AGRICULTURE 



traps were run in the Turkish and 38 in the domestic storage ware- 

 houses. The traps were started in the Turkish storage on May 15 



— r!00 



^600 



§550 



5500 



§450 



-400 



a. 



< 



en 



350 

 300 



en 



LJ 



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00 



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26 



MAY 



•MAXIMUM TEMPERATURES 

 'oMINIMUM TEMPERATURES 



n m m 



-A 



r^ 





9 ^ 23 

 JUNE 



7__2! 



Jul7 



18 I 15 29 13 30 



90 



80^ 



L±J 



en 



70 % 



<r 



UJ 

 Q_ 



60 ^ 



LlI 



50 



40 



AUG. SEPT. OCT. 



Figure 5.— Average catches of the cigarette beetle, in relation to the temperature and the season, in open- 

 storage warehouses containing Turkish tobacco. Experiment 1. 



and in the domestic storage on May 29, and were operated until the 

 end of October. A summarv of the catches is shown in table 1. 



g600 



§550 

 (/) 



=>500 

 o 



p450 



CL400 

 < 



g: 350 



300 

 250 

 200 

 150 

 100 

 50 

 O 





• MAXIM 



UM 1 

 UM 1 



"EMPE 



RATURES 







o MINIM 



"EMPERATURES 





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12 26 



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10 24 



"July 



7 2 



"aug^ 



5 18 

 SEPT. 



13 31 



OCT. 



00 



90 



80 



70 



60 



H 50 



40 



Figi'ke 6.— Average catches of the cigarette beetle, in relation to the temperature and the season, in open- 

 storage warehouses containing domestic flue-cured tobacco. Experiment 1. 



The catches of cigarette beetles in relation to the temperature and 

 season of the year are shown graphically in figures 5 and 6. 



