Fertilizers Applied to Timothy on Corn Crop. 



183 



Plat 727 

 320 lbs. nitrate 



of soda 

 80 lbs. muriate 



of potash 



320 lbs. acid 



phosphate 



Hay 7.250 lbs. 



Corn 57.8 bu. 



Gain S51.11 



Plat 726 



No fertilizer 



Hay 3,140 lbs. 



Com 33.4 bu. 



Fig. 27. 



Plat 72s 



320 lbs. nitrate 



of soda 



80 lbs. muriate 



of potash 



320 lbs. acid 



phosphate 



Hay 7,280 lbs. 



Corn 62.9 bu. 



Gain S60.85 



Pla. 724 

 320 lbs nitrate 



of soda 



80 lbs. muriate 



of potash 



640 lbs. acid 



phosphate 



Hay 6,950 lbs. 



Corn 53.7 bu. 



Gain $46.37 



Plat 731 



10 tons manure 



Hay 6,840 lbs. 



Corn 66.7 bu. 



Gain S72.40 



Plat 730 



No fertilizer 



Hay 2,350 lbs. 



Com 31.7 bu. 



Fig. 28. 



Plat 729 



No fertilizer 

 Hay 2,550 lbs. 

 Com 29.3 bu. 



Plat 728 

 640 lbs. nitrate 



of soda 



80 lbs. muriate 



of potash 



320 lbs. acid 



phosphate 



Hay 8,160 lbs. 



Corn 55.9 bu. 



Figs. 24.^5. 26. 27, 28. — Corn grown without fertilisers, following timothy, fertil- 

 ized as shown above. The fertilisations are per acre, as arc also the yields. The 

 hay was grown in 1907 and the corn in igo8. The gains are for three hay crops, 

 ^905-7, and one corn crop. 



RESIDUAL effect OF FERTILIZERS 



The three check plats in series 701-710 have averaged 16,506 pounds 

 of forage, 3,136 pounds of stover, and 73.2 bushels of ear corn per acre, 

 as compared with an average yield of io,.482 pounds of forage, 2,226 

 pounds of stover and 30.4 bushels of ear corn for the eight check plats 

 of series 71 1— 732. This shows a much higher productiveness in the case 

 of the former series of plats. The application of fertilizers directly to 

 the corn on series 701-710 has produced an average increase of only 

 (.527 pounds or 9.39^ of forage, 267.6 pounds or 8.76;*^ of stover, and 

 C).7 bushels or 9.92^'' of ear corn. On series 711-732, where the pro- 

 ductiveness was much lower, there has been an average increase due 



