746 EXPERIMENT STATION RECORD. 



Composition of sugar cane at different stages of growili. 



Field experiments with fertilizers, C. S. Phelps (Connecticut 

 Storrs tita. Rpt. 1896, pp. 205-215). — These consist of special nitrogen 

 experiments with corn, legumes, and grasses, and a soil test with fer- 

 tilizers on oats. Yellow and wbite flint corn and cowpeas are to be 

 grown under the same conditions for a number of years in succession, 

 and this report is for the second year of the experiment. Each crop 

 occupied 10 plats, 8 of which received 320 lbs. of dissolved bone bJack 

 and 100 lbs. of muriate of potash per acre. Some of these plats received 

 in addition 25, 50, and 75 lbs. per acre of nitrogen in the form of nitrate 

 of soda or sulphate of ammonia. The un manured plats were used as 

 check plats. All results are tabulated. Previous work in this line was 

 reported in the Annual Report of the station for 1895 (B. S. R., 8, 398). 



The yield of coi n was less on the dissolved bone black and muriate of 

 potash plats than on the nitrogen plats. In most cases the yields of 

 the nitrogen plats were less where only 25 lbs. of nitrogen per acre was 

 used than where 50 or 75 lbs. was applied, but the increase in yield 

 was not proportional to the increase in nitrogen. The percentage of 

 protein in the total crop was higher where nitrogen was used and 

 increased with the quantity of nitrogen applied. 



A larger yield of cowpeas was obtained from the plats dressed with 

 bone black and muriate of potash than from the check plats. Nitrate 

 of soda increased the yield over all the plats. The effect of nitrogen 

 was not very marked, the largest yield being obtained where the smallest 

 amount of nitrogen was added. " There seems to be very little rela- 

 tionship between the percentages of protein in the crop and the quantity 

 of nitrogen used in the fertilizer." 



The soil-test experiment is the seventh in a series, the same kinds of 



