66 INDIAN CORN CULTURE. 



ferttlizer was applied, while combinations of 

 potash and nitrogen, or potash alone, gave good 

 yields.* 



At the Virginia station phosphoric acid gen- 

 erally increased the yield. A full application 

 of this cost but one-half as much as the potash 

 and one-sixth as much as the nitrogen.f Fur- 

 ther, where phosphoric acid was'applied there 

 was a larger proportion of the corn to fodder 

 than in the other yields. In no instance did 

 the nitrogen application give a gain equal to 

 its cost. 



The Rhode Island station, on the basis of 

 several experiments, advises the use of about 

 45 lbs. nitrogen, 75 lbs. potassh and 54 lbs. phos- 

 phoric acid per acre.:}: 



Summary of experiments. — A careful ex- 

 amination of the experiments in supplying fer- 

 tility to the corn crop conducted by the diffe'r- 

 ent agricultural experiment stations shows, 

 as might have been expected, much difference 

 in the results secured. Wherever used stable 

 or barn-yard manure was productive of good 

 results. Combinations of nitrogen, potash and 

 phosphoric acid gave satisfactory yields in 



* Kentucky agricultural experiment station. Bulletin No. 

 33. 



t Virginia agricultural experiment station. Bulletin 31, 

 August, 1893. 



t Handbook of experiment station work. Washington. 

 1893, p. 86. 



