1895.] PUBLIC DOCUMENT — No. 33. 195 



Plat 8 shows again the exceptional conditions of previous 

 years, for, although fertilized in a like manner as Plat G, its 

 total yield was 1,800 pounds less. 



In yield of grain those plats which received their nitrogen 

 in the form of sulphate of ammonia (5, G and 8) averaged 

 92 pounds; those in the form of organic nitrogen (0, 6 and 

 8), 140| pounds; those in the form of nitrate of soda (1 

 and 2), 140^ pounds. 



The best results in relation of total yield to yield of grain 

 were obtained in the case of those plats receiving organic 

 nitrogen (dried blood and barn-yard manure), or nitrogen 

 in the form of nitrate of soda ; while in the case of sulphate 

 of ammonia the ratio of grain to straw was too wide to give 

 the best satisfaction. 



The total jdeld of crops on the plats receiving no nitrogen 

 addition, as compared with those receiving a nitrogen supply, 

 was during the succeeding years as follows : — 



With oats in 1890, one-fifth to one-sixth less ; 



With rye in 1891, one-fifth to one-sixth less ; 



With soja bean in 1892, one-third to one-fourth less ; and 



With oats in 1893, one-seventh to one-eighth less. 



From this it will appear that the introduction of a legu- 

 minous crop into our rotation had somewhat reduced the dif- 

 ference in yield between the plats receiving no nitrogen and 

 those receiving it, yet had not entirely obliterated it. 



It was decided to continue the observation by repeating 

 the raising of soja beans in 1894 and oats in 1895. 



1894. — To secure, if possible, more decisive results re- 

 garding the presence and absence of nitrogen, it was decided 

 to use twice the amount of phosphoric acid and potassium 

 oxide, as compared with preceding years. 



Amount of Fertilizing Ingredients applied per Acre during 1894. 



f Nitrogen, .... 45 pounds. 



Plats 0, 1, 2, 3, 5, 6, 8, 10, <{ Phosphoric acid, . . . 160 pounds. 



i^ Potassium oxide, . . . 250 pounds. 



( Nitrogen, .... none. 



Plats 4, 7, 9, . . .<J Phosphoric acid, . . . 160 pounds. 



^^ Potassium oxide, . . . 250 jjounds. 



