PURITY AND GERMINATION OF SEED USED. 



21 



Table il. — Temperature and rainfall of Orel, Russia, and certain localities in America. 



<i St. Anthony Park, where these experiments were conducted, lies about midway between St. Paul 



and Minneapolis, Minn. . 



b No meteorological data are available for Bigstone, S. Dak.; hence the observations for Milbank, 

 a point 11 miles distant, are here given. , „, , 



cNo meteorological data Iwing available in the case of Oakland, Nebr., the records of Tekamah, 

 a point 16 miles distant, are used. 



PURITY AND GERMINATION OF SEED USED IN EXPERIMENTS. 



In purchasing the different lots of seed used in the work, the greatest 

 care was exercised to secure samples as free as possible from trouble- 

 some and injurious w^eeds, particular care being used with reference 

 to dodder. All of the seed was of high average quality both as to 

 purity and germination. The average purity of all samples as 

 distributed for seeding was 9S.13 per cent. As may be seen by an 

 inspection of the following table, the seed showing the liighest per- 

 centage of purity was that from Oregon, containing 99.68 per cent of 

 pure seed, wliile the. seed grown in New York contained the highest 

 percentage of impurities, 7.46 per cent, or 92.54 per cent of pure seed. 

 Every sample was screened from two to six times, one even twelve 

 times, in order to remove as many of the impurities as possible. 



The average germination of all samples was 87.07 per cent, the 

 lowest percentage being 58.2 per cent for the seed from Courland, 

 Russia; the liighest, 99.12 per cent for the seed from eastern Ohio. 

 Red clover seed germinating from 90 per cent to 95 per cent is gen- 

 erally considered as representing a satisfactory commercial product. 



95 



