1919] 



YOUNG — SEED DISINFECTION 



151 



TABLE I 



TREATMENT OF SEEDS WITH CALCIUM HYPOCHLORITE SOLUTION 



CD 



Cucumber 



{Cucumis 



sativus) 



Radish 



(Raphanus 



sativus) 



Lettuce 

 (Lactuca 



sativa) 



Sunflower 



( Helianthus 



annuus) 



Sugar beet 



{Beta 



vulgaris) 



e 



CD 



6 



U CO 



O 



CD 



E 



Bean 

 (Phaseolus 



vulgaris 

 var. nanus) 



c 

 o 



C 



E 



CD 



o 



d 



u 



a 



cu 



o3 



d 

 O 





oj 



C 



U 



— 

 CD 



a 



<o 



goo 



c 

 o 



c 

 o 



U 



bD 



C 



CT3 



CO 



e 



CD 



6 



03 



cy 



CO 



O 



CD 



E 



a> 





03 



c 



I 



u 



cy 



a 



c 



u 



u 



CD 



a 



03 



d 



o 



d 



CD 

 CD 



u 



o3 a 



CO 



03^ 



d oo 



u 



d 



o 



d 

 o 



U 



C 



OT3 

 CD 



2 



6 



11 



20 





2 



6 



11 



20 



2 



6 

 11 

 20 



2 



6 



11 



20 



2 



6 



11 



20 



2 



6 



11 



20 



95 

 95 

 95 

 95 



45 

 16 

 16 

 10 



80 



24 

 20 

 20 



20 



15 

 

 



Good 

 Good 

 Very good 

 Injured 



20 

 

 

 



Fair 

 Poor 

 Poor 

 Poor 



50 



40 

 40 

 30 



96 



96 



50 







Growth 

 inhibited 





 

 

 



Good 

 Good 

 Poor 

 Poor 



90 

 90 

 90 

 60 



40 

 40 

 40 



25 



100 

 100 

 100 

 100 



10 

 

 

 



Cotton 



(Gossyp- 



ium)* 



Corn 



(Zea Mays) f 



Alfalfa 



{Medicago 



sativa) 



6 

 11 



20 

 44 



2 



6 



11 



20 



85 



60 



60 







2 



6 



11 



20 



Mouldy 



Poor 





Normal 

 Normal 



Injured 



Turnip 



(Brassica 

 Rapa) 



Vetch 



( Vicia 

 sativa) 



Cucumber 

 ( Cucumis 

 sativus) f 



2 



6 



11 



20 



2 

 6 



11 

 20 



2 



6 



11 



20 



90 

 90 

 80 

 20 



80 

 80 

 80 

 40 



100 

 100 

 100 

 100 



Normal 

 but seed 

 covered 

 with Fu- 

 sarium 



60 



20 



10 







40 



20 



5 







80 

 80 



25 







90 

 90 



40 

 



60 

 60 

 40 

 20 



40 

 10 



5 







Good 

 Good 

 Good 

 Poor 



Good 

 Good 

 Good 

 Growth 

 inhibited 



20 

 10 





 



60 



30 



10 



5 



Good 



Fair 



Growth 



inhibited 

 Growth 



inhibited 



Fair 

 Growth 

 inhibited 



Normal 



Seed from Alabama, f Seed from St. Louis Seed Co. 



remained viable after 20 hours ' treatment with the hypochlo- 

 rite solution. This, however, either indicates that disinfec- 

 tion did not occur or that the bacteria were shielded by being 

 so far within as to be beyond the range of diffusion of the dis- 

 infectant. This disinfectant, then, is only effective with cer- 



