CONTEXTS. 



Page. 



Introduction ^ 



Tlie importance of clover culture 10 



Domestic versus foreign seed 1 1 



Objections of European orrowers to American red clover 11 



Hairy clover a cause of bloating 12 



Some general objections to the growing of clover 12 



Certain objections overcome by new type of clover 12 



Disadvantage of lateness of maturing under some conditions 13 



Heavy yield of first crop and accruing advantages 13 



Other points of excellence of hairless clover 13 



Effect of persisting basal leaves on quality of hay 14 



Lateness of hairless clover with reference to insect ravages 15 



Effect of lateness of maturing when seed production is desired 16 



Sections particularly suited to the cultivation of the new type 16 



Seed of new type indistinguishable from ordinary form 16 



Plans of experiments, origin of seed, and methods of procedure 17 



Sources of Russian clover seed except No. IG 18 



Source from which Russian seed No. 16 was obtained 19 



The soil and climate of Orel 19 



Purity and germination of seed used in experiments 21 



Detailed description of experiments 22 



The experiment in Nebraska 22 



Location 22 



Soil 22 



Drainage 23 



Preparation of land and seeding 23 



General weather conditions during 1904 ._ 23 



Comparison of strains of clover on entering the winter of 1904 23 



Comparison of early growth of certain strains of clover ■ 24 



Weather during growing season of 1905 25 



Earliness of varieties and order in which they matured 25 



Yield of the Orel clover compared with other strains 27 



The experiment in South Dakota 27 



Location 27 



Soil and drainage 28 



Preparation of land, seeding, and subsequent treatment 28 



Weather conditions during 1904 and 1905 29 



Comparison of yields - 50 



P5 







