FERTILIZERS FOR TIMOTHY 303 



drainage is always a good thing, and that carbonate of 

 lime sweetens grass and makes clovers thrive. 



Fertilization of Timothy and the Crop Following. 

 Bulletin 273 of Cornell University Experiment Station, 

 Ithaca, N. Y., is full of significant facts relating to the 

 effect of fertilizers of various sorts and of farm manures 

 on timothy and on the corn crop following. Briefly, 

 the fertilizers applied were nearly all profitable in in- 

 creasing the timothy crop alone, and the corn following 

 showed marked results. By far the larger residual re- 

 sults were secured from the use of barnyard manure, 

 10 tons to the acre producing an increase of 110.3 P er 

 cent and 20 tons producing 115.1 per cent increase. The 

 summary follows : 



"This bulletin shows that both manure and artificial fertilizers 

 have a marked residual effect. On plats 711-732, the average yields 

 of the plats receiving fertilizers above the check plats show a gain 

 of 35.8 per cent for forage, 25.15 per cent for stover, and 66.65 per 

 cent for ear corn. In all cases the increase in ear corn was greater 

 than that in forage or stover. When a single fertilizer was used, 

 potassium increased the ear corn more than nitrogen or phosphorus. 

 When two were used in combination, potassium and phosphorus 

 gave the greatest increase in forage and stover, potassium and nitro- 

 gen in ear corn. The maximum increase in forage, ear corn and 

 stover was obtained when all three fertilizers were added. (The 

 previous year the same combination gave the highest yield of tim- 

 othy.) The residual effect of barnyard manure was greater than 

 that of any combination of artificial fertilizers. Ten tons per acre 

 show an increase of 110 per cent in ear corn and 20 tons per acre 

 an increase as high as 115 per cent. The increase in stover and 

 forage, though not quite so high as in ear corn, was much greater 

 than that of any combination of mineral fertilizers. The increase 

 in yield of hay in 1905-06-07 was in every case worth more than 

 the cost of fertilizers applied, so that the increase in yield of corn 

 was clear gain. Figuring on the current market prices for the fer- 



