354 Bulletin 264. 



Yield of Plots, Cherry Creek Experiment' 



Plot 



2 

 3 



5 



6 



8 



9 



II 



13 



2 



3 



5 



6 



8 



9 

 II 

 12 



Treatment 



Average untreated 



Muriate of Potash 50 lbs 



Muriate of Potash 50 lbs. } 



Nitrate of Soda 100 lbs. f 



Muriate of Potash 50 lbs. j 



Acid Phosphate 100 lbs. f 



Nitrate of Soda 100 lbs. [ 



Acid Phosphate 100 lbs. f 



Complete fertilizer 



Manure 1 5 tons 



Manure 15 tons I 



Medium red clover \ 



Manure 15 tons } 



Alsike clover j' 



Average Limed 



Muriate of Potash 50 lbs. and lime 



Muriate of Potash 50 lbs. and lime 



Nitrate of Soda 100 lbs. 



Muriate of Potash 50 lbs. and lime 



Acid Phosphate 100 lbs. 



Nitrate of Soda 100 lbs. and lime 



Acid Phosphate 100 lbs. 



Complete fertilizer and lime 



Manure 15 tons and lime 



Manure and lime (red clover) 



Manure and lime (alsike clover). . .. 



Rate of 



yield 

 per acre 



1824 

 1831 



2247 



2349 



2140 



2235 

 2091 



3469 



2811 



3852 

 4027 



4350 

 4174 



4168 



4085 

 4976 

 5924 

 4999 



Average of all unlimed plots, 2178. 

 Average of all limed plots, 4343. 



Even the most casual glance at the above table will show very dis- 

 tinctly : 



(i) The enormous increase due to lime. 



(2) The beneficial effects of manure. 



(3) The greater yields of medium red and alsike clovers over mam- 

 moth clover. 



(4) The little benefit from any of the fertilizers. 



Taking the plots as a whole, the treatment most effective was man- 

 ure and lime, with a crop of alsike or medium red clover. 



'Actual Yields op Plots 



I Check. . 

 a 



3 



4 Check.. 



S 



6 



7 Check.. 



8. 



10 Check. 



II 



12 



13 Check. 



In order to correct the yields for soil differences on different plats, the apparent increase and per 

 cent, of apparent increase are calculated for each plot. Tlie averat'c uf all chcik plots is then used 

 as 100 per cent, in calculating the yields as given abnvo. \vKi( h are corrected for soil differences. 



