1907.] 



PUBLIC DOCUMENT — No. 33. 



51 



indicated the beneficial results which have followed the use 

 of lime in connection with the other fertilizers. 



Soil Test with Corn (South Acre).- — This acre has been 

 used in soil tests for eighteen years, beginning in 1889. 

 The field has been limed twice during this period, each time 

 at the rate of 1 ton to the acre. The lime was applied broad- 

 cast after plowing, and harrowed in. These applications of 

 lime were made respectively in 1899 and in 1904. 



The crops for successive years have been as follows: corn, 

 corn, oats, grass and clover, grass and clover, corn (foHowed 

 by mustard as a catch crop), rye, soy beans, white mustard, 

 corn, corn, grass and clover, grass and clover, corn, corn, corn, 

 grass and clover, grass and clover. Since 1899 this field 

 has, therefore, borne eight corn crops. Three times it has 

 been put into mixed grass and clover, each time for two 

 years. The past season is the second of the third two-year 

 period. The season has been a fairly favorable one for grass, 

 although, as the soil of this field is inclined to be light, there 

 can be no doubt that a somewhat heavier yield would have 

 been obtained had the rainfall been larger. The following 

 table shows the fertilizers used on the several plots, the rates 

 of yield and the gaiji or loss per acre, compared with the 

 nothing plots : — 



Grass and Clover. — Sonfh Acre Soil Test, 1906. 



Plots. 



Plot 1, 



Plot 2, 



Plot 3, 



Plot 4, 



Plot 5, 



Plot 6, 



Plot 7, 



Plot 8, 



Plot 9, 

 Plot 10, 



Plot 11, 



Plot 12, 

 Plot 13, 

 Plot 14, 



Fertilizers used. 



Nitrate of soda, . 

 Dissolved bone black, 

 Nothing, 

 Muriate of potash. 



Lime 



Nothing, 

 Manure, 



Nitrate of soda and dissolved bone 



black. 

 Nothing, 



Nitrate of soda and muriate of pot- 

 ash. 



Dissolved bono black and muriate 

 of ])otash. 



Nothing, 



Plaster, 



Nitrate of soda, dissolved bone 

 black and muriate of potash. 



Yield per Acre 

 (PoimDs). 



Hay. Rowen. 



1,400 

 760 

 910 

 690 

 890 

 660 

 2,940 

 2,200 



820 

 2,400 



1,790 



950 



640 



3,000 



520 

 295 

 300 

 440 

 260 

 325 

 2,670 

 520 



390 

 470 



1,220 



410 



320 



1,100 



Gain or Loss per Acre, 



compared with 



Nothing Plots. 



Hay. 



+ 490.0 



— 150.0 



— 136.7 

 + 146.7 



+ 2,226.7 

 + 1,433.3 



+ 1,5.36.7 



+ 883.3 



— 310.0 

 + 2,050.0 



Rowen. 



+ 220.00 

 — 5.00 



+ 131.70 



— 56.70 



+ 2,323.30 

 + 151.70 



+ 73.. 33 

 + 816.70 



— 90.00 

 + 1,690.00 



