1919] 



YOUNG SEED DISINFECTION 



153 



TABLE II 



TREATMENT OF SEEDS WITH FORMALDEHYDE 







g 



E 



co 

 c3 cj 



a) 



E 



3 

 g 



6 



a 



o 



c3 



c 



E 



CJ 



a 



c 



CJ 

 CJ 



u- 

 CJ 



a 



c 

 o 



03 



C 



6 



cd 



G 

 O 



U 



c 



GJ 



u 



GJ 



a 



o 



T3 

 C 

 O 



U 



b£ 



G 



CJ 



CO 



T5 



GJ 

 GJ 



c 



GJ 



E 



s 



u 



CO 



0) 



O 



CJ 



E 



3 

 G 



£ 



G 

 O 



C 



E 



a 



c 



OJ 



u 



OJ 





G 

 O 



G 



E 



a 

 o 



U 



c 



o 







a 



c 

 o 



•a 



c 

 o 



U 



be 



a 



o-o 



CI 



a> 



2 per cent solution 



3 per cent solution 



Dwarf 

 bean 



Cucumber 



Lettuce 



Radish 



15 

 30 



45 



15 

 30 

 45 



96 

 80 

 80 



92 

 80 

 60 



15 



30 



45 







15 



30 

 45 

 60 



96 

 50 

 10 



90 



45 



30 



4 



20 

 20 

 10 



Normal 

 Normal 

 Normal 



15 

 5 

 



50 

 

 



Sugar beet 



Sunflower 



15 

 30 

 45 



15 

 30 



45 





5 

 

 

 



40 

 

 



5 

 

 



85 50 



66 

 55 



15 

 15 



Normal 



Fair 



Poor 



Fair 

 Poor 

 Very poor 



Good 

 Fair 



Very poor 

 Very poor 



Dwarf 

 bean 



Cucumber 



Very poor 

 Very poor 

 Very poor 



Normal 

 Normal 

 Normal 



Cotton 



15 



30 



45 



15 

 30 



45 



15 

 30 

 45 



Cotton^f 



15 

 30 

 45 

 60 



Sunflower 



96 

 98 

 40 



40 

 

 



90 

 96 

 96 



10 

 

 



60 

 40 

 40 



60 

 60 

 50 

 40 



80 

 80 

 70 



Normal 

 Good 



Fair 



Normal 

 Normal 

 Poor 



Poor 

 Poor 



Poor 



80 



80 



5 







Normal 

 Normal 

 Normal 

 I n j ured 



15 

 30 

 45 



90 

 96 

 70 



Sunflower** 



15 

 30 

 45 



96 

 96 

 70 



80 

 70 

 40 





5 

 

 



Fair 

 Fair 

 Poor 



Good 

 Good 

 Growth 

 inhibited 



Wheat 



15 

 30 

 45 



90 

 96 

 92 



5 

 

 



Very good 

 Very good 

 Very good 



Wheat 1 1 



15 

 30 

 45 



96 

 96 

 90 



15 

 

 





Good 

 Good 



Fair 



Barley 



15 

 30 



45 



80 



20 







10 

 5 

 



Fair 

 Poor 



Alfalfa 



15 

 30 



45 



90 

 90 

 60 



20 

 

 



Normal 

 Normal 

 Injured 



Corn 



15 

 30 



45 



90 

 90 

 60 



20 



10 







Good 

 Good 

 Fair 



Corn 



Garden pea 



15 

 30 

 45 



90 

 80 

 40 



20 

 

 



Normal 

 Normal 

 Injured 



Potato 



15 

 30 



45 



15 

 30 

 45 

 60 



90 

 90 



40 



100 



100 



90 



90 





 







90 

 90 

 80 

 80 



Normal 

 Slightly 



inj ured 

 Injured 



Normal 

 Normal 

 Normal 



Normal 



* Preliminary treatment — soaked in water 12 hrs. 

 ** Preliminary treatment — soaked in water 18 hrs. 



11 Preliminary treatment — soaked in water 18 hrs., heated to 68° C. for 15 min 

 ft Preliminary treatment — soaked in water 6 hrs. 



