98 



Food for Plants. 



Ill \\w other case, the pasture land was plowed in June, 

 rolled down and thoroughly and frequently cultivated 

 and similarly seeded about the 24th of September. The 

 latter method, however, did not kill the native grass, and 

 is not recommended. 



Crop of Grass Grown b\ the Use of Nitrate of Soda. 



Fertilizers Used. 



Since one object of this experiment was to determine 

 whether profitable cropping could be continued for more 

 than one season, the land was not only thoroughly pre- 

 pared, but amply supplied with pliosphoric acid, potash 

 and lime, in order that there might be no deficiency in 

 the quantity of mineral constituents required for the 

 crop. On the highest and most gravelly portion of the 

 upland, stable manure was applied to supply humus and 

 increase the absorptive power of the soil, and on all the 

 land one ton of lime was applied per acre before plowing. 



