MASS. EXPERIMENT STATION BULLETIN 290 



Fertilizer Plan with Corn 



1885-1888 



In his report for 1885, Director Goessmann states: 



.... we notice that the application of potash compounds alone has had a marked effect on 



the quantity .... of the corn fodder raised, .... 



.... it seems justifiable to conclude that a deficiency of the soil in available potassa controlled 

 more than that of any other essential article of plant food the final yield of the crop. 



In 1886, without changing the kinds of fertilizers, the quantities used were 

 doubled. There was no change in the order of crop yields, however. 



In 1887, the fertilizers on some of the plots were added in pairs. The addition 

 of potash to nitrogen on Plots 1 and 5, and to phosphoric acid on Plot 7, doubled 

 the yields which had been obtained with those elements alone. Phosphoric acid 



