38 HATCH EXPERIMENT STATION. [Jan. 



entirely to the large percentage of clover found on that 

 plot. Attention is further called to the fact that the first 

 cutting of hay on the plot receiving nitrate, dissolved bone- 

 black and potash is almost equal to that on the plot which 

 has yearly received a dressing of barnyard manure at the 

 rate of 5 cords per acre. 



The analysis of the manure used is shown below : — 



Per Cent. 



Water, 66.61 



Total phosphoric acid, .40 



Potash, .61 



Nitrogen, .52 



At the rate at which it was applied, the manure supplied, 

 per plot: nitrogen, 4.86 pounds; phosphoric acid, 3.74 

 pounds; potash, 5.70 pounds. The fertilizers used on plot 

 14 supplied : nitrogen, about 1.2 pounds; phosporic acid, 

 about 1.6 pounds; potash, 4.0 pounds. 



As was stated in the last annual report, this field was 

 seeded "with mixed grass and clover seeds. The clover 

 soon disappeared from all except those plots to which potash 

 has been yearly applied. In order more clearly to show the 

 relation of the fertilizers to the growth of the clover, the 

 product of an average square yard was carefully cut in June 

 and separated into three parts in each case, viz., grass, 

 clover and weeds (including all plants other than true 

 grasses and clover) . The material thus secured was allowed 

 to dry until November 16. It was then weighed, with re- 

 sults shown below : — 



Effect of Fertilizer on Proportion of Clover. — Product of One 



Square Yard, Air Dry. 



