862 



STATE AGRICULTURAL COLLEGE BULLETINS. 



THORBURN. 



Table ^.^Comparative yields. 



From the preceding tables it will be seen that out of 45 e.xperiments, 

 the total yield in 29 cases was greatest with the deep culture, and in 13 cases 

 was iji favor of shallow culture, while in 3 instances the yield was practi- 

 cally the same. 



In the same experiments the yield of marketable potatoes was in 40 cases 

 in favor of deep culture, while four cases showed a balance in favor of shal- 

 low culture. The amount of sunburned potatoes was in 36 cases greatest 

 in shallow culture, in 6 cases in favor of deep culture, while in three 

 instances the yield was the same. The amount of small potatoes was in 28 

 cases greatest with shallow culture, in 15 cases greatest with deep culture, 

 while 2 instances were indecisive. 



