1896.] PUBLIC DOCUMENT — Xo. 33. 119 



1895. — Oats were again selected to succeed the soja bean 

 of the preceding season, for the purpose of admitting a direct 

 comparison of the results of 1894 and 1895 with those ob- 

 tained under corresponding circumstances during the years 

 1892 and 1893, when the same crops followed each other in 

 the same order. 



The field was ploughed April 29 ; the fertilizers were 

 applied April 30, in the same manner and in the same quan- 

 tity to each plat as in the preceding year (1894), specified 

 upon a previous page, namely, per acre : — 



/'Nitrogen, None. 



Plats 4, 7,9, . . .^ Phosijhoric acid, . . . 160 pounds. 

 C Potassium oxide, . . . 250 pounds. 



/'Nitrogen, 45 pounds. 



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

 C Potassium oxide, . . . 250 pounds. 



The oats were sown in drills two feet apart, at the rate of 

 7 pounds per plat, or 70 pounds per acre, on May 7. The 

 young plants showed above ground on all plats alike May 11. 



To secure clean culture the cultivator was used twice, INIay 

 29 and June 12. The crop did not mature at the same time 

 upon all plats, and was for that reason cut at diflerent dates. 

 It was cut when matured, on August 2 upon plats 0, 1, 2, 

 3, 4, 7, 9, 10, on August* 8 upon plats 5 and 8 and on 

 August 17 upon Plat 6. From this data it will be noticed 

 that in all cases where sulphate of ammonia was used as the 

 nitrogen supply for the raising of oats the maturing of the 

 crop was from one to two weeks later than on all other plats, 

 where either nitrate of soda or organic nitrogen compounds, 

 as blood, barn-yard manure or no nitrogen-containing manu- 

 rial matter, was applied. Similar results have been noticed 

 in previous years, when summer grain crops have been 

 raised in connection with the experiment under discussion. 



