1882.] 



EXPERIMENTS WITH FEETILIZERS. 



353 



The experimental field is part of that on which Mr. Barthol- 

 omew's other experiments have been made. The soil Mr. Bar- 

 tholomew describes as "hill land, dark loam, moist, with clayey 

 subsoil. The land of this experiment was, in 1874, an old 

 meadow, yielding about one ton of hay per acre. In 1875 it was 

 plowed, dressed with twelve cart-loads per acre of yard manure, 

 planted to corn, and gave 35 bushels per acre. In 1876 it was 

 sowed to oats, with no additional manure; yield 40 bushels." Tn 

 1877 experiments were began with corn. The land has thus been 

 out of grass for six years — one with oats and four with corn. 

 The seasons of 1877 and 1878 were on the whole favorable. In 

 1879 the spring was late, the crop was injured by storms and 

 frost killed the corn September 25th, before the corn was matured. 

 The season of 1880 was unusually favorable. In 1881, a hail- 

 storm, July 8th, nearly destroyed the crop, so that with the very 

 unfavorable season the produce amounted to very little. The 

 yields per acre have been as follows: 



Plot. 



Fertilizer. 



I Yield of Shelled Corn per Acre iif 

 Bushels. 



KIND. 



1 

 2 

 3 

 4 

 5 

 6 

 O 

 7 

 8 

 9 

 lO 



Dried Blood 



Superphosphate 



Mnriate of Potash 



MlxtureJ&II 



Mixturel&II&III... 



Plaster 



No Manure 



Wood Ashes, dry 



Wood Ashes, leached. 



Hog Manure 



Hen Manure 



AMOUNT PER ACRE. 



320 lbs 



320 lbs 



320 lbs 



160 lbs. of each.. 

 106|lbs. of each. 

 32(1 lbs 



32 bushels.... 



48 bushels 



16 cart-loads. 

 20 bushels.... 



1881. 



12.8 



« 



11.3 



8.7 



....+ 

 15.1. 



♦Entire failure. 



+Dissolved Bone-black 480 lbs. per acre, instead of Ashes in 1880. Nothing in 1881. 

 JAmmoniated Superphosphate 480 lbs. per acre, in place of Ashes ia 1880. Nothing 

 in 1881. 



In speaking of the results in 1881, Mr. Bartholomew says: 

 " The land on which these experiments have now been conducted 

 for five successive years was also plowed the two previous years, 

 making seven years in succession under cultivation. The soil 

 has become very light, has washed considerably on to the adjoin- 

 ing meadow, and seems to have become unfitted for corn. The 

 plot fertilized with a good cart load of farm manure has pro- 

 duced but little more than that with phosphate. I think the condi- 

 23 



