No. 4.] GRASSES AND FORAGE CROPS. 



201 



addition of nitrogen, there was a decided financial loss, 

 while in all cases except one where nitrogen was used with 

 the mineral fertilizers there was a financial gain. The in- 

 crease in yield obtained from the two forms of nitrogen 

 was nearly the same, although the financial gains were con- 

 siderably better with nitrate of soda than with sulphate of 

 ammonia. The smaller gain is accounted for in part by 

 the higher cost of the sulphate, the nitrogen in this form 

 being reckoned at one cent per pound higher than that from 

 the nitrate of soda. 



Yi'lds mud Value of Increase in Experiments with Nitrogenous 

 Fertilizers on Mixed Grasses {Averages for Tivo Years) . 



FERTILIZERS. 



o <u 



— <P* ° 



> 2. 



5* 



2^ 



^ u 



2 £ « 



BUft 

 > 



Pi * 

 o 



Nothing 



Mixed minerals, as No. 6, . 

 Nitrate of soda, 25 pounds nitrogen, 



Mixed minerals, as No. 6, . 

 Nitrate of soda, 50 pounds nitrogen, 



Mixed minerals, as No. 6 



Nitrate of soda, 75 pounds nitrogen, 



Dissolved bone-black, mixed minerals, . 

 Muriate of potash, mixed minerals, 



Mixed minerals, as No. 6 



Sulphate of ammonia, 25 pounds nitrogen, 



Mixed minerals, as No. 6 



Sulphate of ammonia, 50 pounds nitrogen , 



Mixed minerals, as No. 6, . 



Sulphate of ammonia, 75 pounds nitrogen, 



Nothing, . . . 

 Mixed minerals, as No. 6, 



480 ; 

 160' 



480 

 320 



480 

 480 



320 

 160 



480 

 120 



480 

 240 



480 

 360 



12 24 



15 49 

 5 74 

 9 24 



12 74 



16 24 



5 74 



lbs. 

 1,821 



4,077 

 5,200 

 5,157 

 2,777 

 3,804 

 4,807 



5,136 



2,244 

 2,876 



lbs. 



2,044 

 3,167 

 3,124 

 744 

 1,771 

 2,774 

 3,103 



$10 22 

 15 84 

 15 62 

 3 72 

 8 86 

 13 87 

 15 52 



843 4 22 



$1 23 

 3 60 



13 

 -2 02 

 —0 38 



1 13 



72 



1 52 



Effect of Nitrogen on the Protein of the Crop. 



In connection with the field experiments on the yields and 

 financial results from the use of nitrogenous fertilizers, a 

 study was also made of the effect of the fertilizer on the 



* The cost of the fertilizer is based upon the station valuation for nitrogen, phos- 

 phoric acid and potash for the year 1898, — nitrogen from nitrate of soda being 13 

 cents per pound, from ammonia compounds 14 cents, potash as muriate 4^ cents, 

 and soluble and available phosphoric acid 4£ cents. 



