doubtless gradually reduced the acidity of the soil to such F°od for 

 an extent as to make it more favorable to grass, and, con- ^"^^ 

 sequently, less favorable to common sorrel than where full ^^ 

 rations of dried blood or of sulphate of ammonia had been 

 applied." The decomposition of the latter substances in 

 the soil tend to increase its acidity and thus favor the 

 growth of sorrel. 



Of the three grasses which grew on the plats, orchard 

 grass and awnless broome grass were most benefited by 

 liming, and meadow oat grass least. The latter was bene- 

 fited somewhat by lime in all except two cases, but it 

 appears to be much less dependent upon its presence than 

 are the other two grasses. 



Timothy was not sown on the plats, but appeared in 

 nearly every instance on the limed sections and but twice 

 on the unlimed sections, indicating the value of neutral or 

 slightly alkaline soils for this plant. Redtop appeared 

 in but four instances, three of which were upon unlimed 

 soil. This is in accord with previous observations at the 

 Station to the effect that redtop can succeed in a soil too 

 acid for the successful growth of either blue grass or 

 timothy. Clover was found upon every one of the limed 

 plats, but was wholly absent from the unlimed sections, and 

 the best clover was found upon the plats which had received 

 potash and phosphoric acid, but no Nitrogen. — the editor 



AND C. B. SMITH. 



EXPERIMENT STATION WORK, XIII. 

 Washington, D. C. 



Farmers' Bulletin No. 107. 



Editor : W. H. BEAL. 



Prepared in the Office of Experiment Stations. 



A. C. TRUE, Director. 



Page 7. 



" Under existing conditions farmers are advised to purchase 



fertilizer materials and to make their own mixtures rather 



than to purchase mixed or complete special fertilizers. This 



course is believed to be advisable for two reasons : First, 



