1908.] 



PUBLIC DOCUMENT — No. 33. 



33 



the order of their succession have been : oats, rye, soy beans, 

 oats, soy beans, oats, soy beans, oats, oats, clover, potatoes, 

 soy beans, potatoes, soy beans, potatoes, oats and peas, and 

 corn. 



The crop the past year was alsike clover, considerably mixed, 

 however, with grass, on all plots except those to which no 

 nitrogen has been applied. The clover was sown in the stand- 

 ing corn on Aug. 6, 1906. When the corn was harvested in 

 the fall of 1906, it was very apparent that the clover was rela- 

 tively weak and unhealthy on all plots to which nitrogen has 

 been applied during the progress of this experiment. The 

 clover was tliicker and more healthy on the tliree no-nitrogen 

 plots than on any of the others. It was poorest on the sulfate 

 of ammonia plots, and especially poor on the plots where sul- 

 fate of ammonia has been used in com))ination with muriate of 

 potash. The relative condition of the clover on the different 

 plots on the opening of spring was about the same as in the 

 autumn, and as on most of the plots it was too thin for a good 

 crop, 3I/2 pounds of alsike clover seed were sown per plot on 

 April 3. This seed germinated fairly well, but of course the 

 young plants from this seeding affected the rate of yield in the 

 first crop but little. The rates of yield on the several plots 

 and the sources of nitrogen and potash on each are shown in 

 the following table : — 



