50 



EXPERIMENT STATION. 



[Jan. 



the field has been put into mixed grass and clover, each time 

 for two years. The third grass and clover period ended last year. 

 The sod, however, was not turned until last spring. The soil 

 was well prepared, but, owing to the cold and rainy spring, the 

 crop, Rustler White dent, was not planted until June 1. The 

 character of the past season, as has been pointed out in another 

 section of this report, was rather unfavorable for corn. The 

 following table shows the fertilizers used on the several plots, 

 the mtes of yield and the gain or loss per acre compared with 

 the nothing plots : — 



Corn. --South Acre Soil Test, 1907. 



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 bsed. 



Yield per Acre. 



Corn 

 (Bushels), 



Nitrate of soda, 



Dissolved bone black, 



Nothing, . 



Muriate of potash, 



Lime, 



Nothing, . 



Manure, . 



Nitrate of soda and dissolved l)one 



blaciJ. 

 Nothing 



Nitrate of soda and muriate of 



potiish. 

 Dissolved bone black and muriate 



of potash. 

 Nothing, 



Plaster, 



Nitrate of soda, dissolved bone 

 black and muriate of potash. 



1.00 

 .81 



2.00 

 23.31 



1.25 



2.2.5 

 72. .'jO 

 10.06 



3.81 

 31.13 

 30.13 



3.38 



7.75 

 38.31 



Stover 

 (Pounds). 



720 

 700 

 1,000 

 6,000 

 900 

 1,100 

 6,900 

 2,600 

 1,100 

 5,400 

 6,500 



soo 



1,200 

 5,.500 



Gain or Loss per Acre, 



compared with 



Nothing Plots. 



Corn 

 (Bushels) . 



Stover 

 (Pounds). 



—1.00 

 -1.19 



+21.23 

 —.92 



+70.25 

 +6.25 



+27.46 

 +26.61 



+4.37 

 +34.93 



—280 

 —300 



+4,967 



—167 



+5,800 

 +1,400 



+4,400 

 +5,600 



+i00 

 +4,700 



It will be noticed that the yield on the nothing plots is ex- 

 cessively small, amounting on the average to but little more 

 than 21/2 bushels of shelled corn per acre and about 1,000 pounds 

 of stover. The use either of nitrate of soda or of dissolved 

 bone black alone gives absolutely no increase ; indeed, the 

 crops on these single fertilizer materials were smaller than on 

 the nothing plots. On the other hand, the use of muriate of 

 potash at the rate of 160 pounds per acre (for this, the nine- 



