130 



HATCH EXPER I ME X T STATION, 



[Jan. 



The field was ploughed as a rule during the month of 

 October, and again at the close of the month of April. The 

 fertilizer was in each case applied broadcast soon after plough- 

 ing in the spring. The seed was sown in hills or drills, as 

 circumstances advised, and the crop kept clean from weeds 

 by the use of the hoe or the cultivator. The following crops 

 were raised : — 



1890, potatoes (see eighth annual report). 



1891, winter wheat (see ninth annual report). 



1892, serradella (see tenth annual report). 



1893, Dent corn, Pride of the North (see eleventh annual report). 



Having for four years (1890-94) in succession pursued the 

 above-stated system of manuring each plat w r ith a different 

 kind of phosphate, yet of corresponding money value, it was 

 decided to continue the experiments for the purpose of study- 

 ing the after-effect of the different phosphates on the crops to 

 be raised. To gain this end the phosphates were hereafter 

 in all cases entirely excluded from the fertilizers applied ; in 

 addition to this change, the former amount of potash and 

 nitrogen was increased one-half in quantity, to favor the 

 highest effect of the stored-up phosphoric acid of the soil 

 under treatment. 



The fertilizers hereafter to be used had the following coni- 

 position : — 



Tlat 1 (6,494 square feet) \ 64 i P°" nds of nitrate of soda. 



* ( 87 pounds of potash-magnesia sulphate. 



Plat 2 (6,065 square feet) \ 65 4 pounds of nitrate of soda. 



* ( 88 pounds of potash-maguesia sulphate. 



Plat 3 (6,636 square feet), .... j £G pounds of nitrate of soda. 



( 89 pounds of potash-magnesia sulphate. 



Plat 4 (6,707 square feet), ... '[ 6B3 ptninda Of nitrate of BWffav 



' I 30 pomrds of pofash-magnCTia sulphate. 



Plat 5 (6,778 square feet) < 67| pbtindS 6f nitrate of sbHa. 



I 90£ pounds of potash-magnesia sulphate. 



