30 CORK.' 



**a. There is miich evidence that the fertilizer for one acre should 

 furnish at least 80 to 100 pounds of actual potash. 



"3. A Corn fertilizer containing 5 per cent, of potash, applied at 

 the rate of 1,000 lbs. j^er acre, furnishes 50 lbs. of actual potash. With 

 such a fertilizer it will pay to use from 75 to 100 lbs. of muriate of 

 potash per acre. 



"4. Four cords of average farm-yard manure will supply about 

 96 lbs. of actual potash; but not all of this will be available the first 

 year,ii[ence it will in most cases be found profitable to use with this 

 manure 75 to 100 lbs. of muriate of potash for corn." 



MISSISSIPPI, 1890. 



By Prof. Connell, at the Station. Third Annual Report, 1890. 

 Soil:— Sandy clay hill. 



"Four hundred pounds of kainit used alone produced the highest 

 profit from the crop, amounting to I17.66 per acre." 



1893. 



By S. M. Tracy, Director. Sixth Annual Report. The following 

 are the results of three years' experimenting upon corn: 



"In 1 89 1 the plots receiving 250 pounds of kainit yielded 36.9 

 bushels per acre, an increase of 10. i bushels per acre, costing 17.9 

 cents per bushel for the increase. 



"In 1892 corn was planted on a heavy red clay soil from which 

 the surface soil had been badly washed, and which had givren a ve*^y 

 light crop of lespedeza the previous season. Here the unfertilized 

 check plots made an average of only 18.5 bushels per acre. Cotton 

 seed meal and kainit increased the yield 24,7 bushels; 250 lbs. of kainit 

 made a yield of 33 bushels. 



"In 1893 unfertilized plots made an average yield of only 25.6 

 bushels per acre .... while 500 lbs. of kainit applied broadcast 

 before planting more than doubled the yield, making an average of 

 62.3 bushels of shelled corn per acre. The cost of the increase of 36.7 

 bushels per acre was a trifle less than ten cents per bushel." 



MISSOURI. 1890. 

 By H. J. Waters, AssidTANt Agriculturist. Bulletin No. 14, April, 

 1891. ■ 

 "So far it appears from these trials that potash is the clement 

 most desired by corn on our land." 



