GERMINATION OF SEED AS AFFECTED BY SULFURIC ACID TREATMENT 303 



an average germination of 80.5 per cent after 21 days, while the samples 

 treated with concentrated sulfuric acid for 60 minutes showed an average 



FlG. 79. Red clover seed 1-5-2. One hundred seeds of red clover not treated with sul- 

 furic acid; twenty-eight per cent germinated after 5 days in germinator 



germination of 87.5 per cent. But even in this case the germination was 

 much more uniform in the treated seed, for an average of 85 per cent 

 had germinated in these samples at the end of the first five days, while the 



FlG. 80. Red clover seed 1-5-2. Sixty-seven seeds of red clover, shown in Fig. 79, 

 which had not germinated after 21 days. These were then treated with concentrated 

 sulfuric acid for 30 minutes and placed in the germinator for 4 days. Sixty-five 

 seeds were then germinated 



