SULPHUR DIOXIDE AS AN INSECTICIDE. 



153 



United States Department of Agriculture, 



Bureau of Plant Industry, 

 Botanical Investigations and Experiments, Seed Laboratory, 



Washington, D. C, October 6, 1905. 



Final report of germination test of seed received September 26, 1905. 



Test 



Number. 



34630 

 34631 

 34632 

 3463, 

 34634 

 34635 

 i,4636 

 34637 

 34638 

 34639 

 34610 

 34641 

 31 42 

 316.3 

 3,644 

 31615 



Sender's 

 mark. 



13316 

 13316 



112.5 



11722 

 11268 

 11268 



Name of seed. 



Rye, untreated 



Rye, 2 to 5 per cent, 22 hours 



Beans, untreated 



Beans, 2 to 5 per cent, 22 hours 



Garden pea, untreated 



Garden pea, 2 t j 5 per cent, 22 hours 



Sorghum, untreated 



Sorghum, 2 to 5 per cent, 22 hours . . . 



Timothy, untreated 



Timothy, 2 to 5 per cent, 22 hours . . 



Oats, untreated 



Oats, 2 t ) 5 per cent, 22 hours 



Flax, untreated 



Flax, 2 to 5 per cent, 22 hours 



Cotton, untreated 



Cotton, 2 to 5 per cent, 22 hours 



Dura- 

 tion of 

 te>t in 



days. 



Germi- 

 nation, 

 per cent. 



21 





 66 





 66 



7 

 73.5 





 52 





 9; 





 81 

 17 

 50 







The actual value is the percentage of pure seed that will germinate. This is obtained by multi- 

 plying the percentage of pure seed by the percentage of total germination. 

 REMARKS.—Treated with S0 2 , as above noted. 



E. Brown, 

 Botanist in Charge of Seed Laboratory. 



United States Department of Agriculture, 



Bureau of Plant Industry, 

 Botanical Investigations and Experiments, Seed Laboratory, 



Washington, D. C. , October 6, 1905. 



Final report of germination test of seed received September 26, 1905. 



Test 

 number. 



Sender's 

 mark. 





3464G 

 34647 



11780 



34648 





34649 

 34650 



12061 



34651 





34652 





34653 







34654 





34655 









Name of seed. 



Barley, untreated 



Barley, 2 to 5 per cent, 22 hours 



Wheat, untreated 



Wheat, 2 to 5 per cent, 22 hours 



Rice, untreated 



Rice, 2 to 5 per cent, 22 hours 



Corn, untreated 



| Corn, 2 to 5 per cent, 22 hours 



Sweet corn, untreated 



Sweet corn, 2 to 5 per cent, 22 hours. 



Dura- 

 tion of 

 test in 



days. 



Germi- 

 nation, 

 per cent. 



94.5 



9.5 

 94 





 42.5 





 94 





 97.5 







The actual value is the percentage of pure seed that will germinate. This is obtained by multi- 

 plying the percentage of pure seed by the percentage of total germination. 

 REMARKS.—Treated with S0 2 , as above noted. 



E. Brown, 

 Botanist in Charge of Seed Laboratory. 



