26 



HATCH EXPERIMENT STATION. 



[Jan. 



leaves on plants on these plots early became very much 

 crinkled. They were smaller than normal leaves, and there 

 were numerous areas near the margins of some of the leaves 

 where the tissues died. This appearance w^as repeated with 

 such perfect reguhirity on each one of the plots (2, 10, 18, 

 2(), 34) to which kainite was applied that it is impossible 

 to doubt that the effect was due to constituents found in 

 this fertilizer. It was clearly physiological in its origin. 

 Whether due to the large amounts of chlorides contained in 

 the kainite applied to thes,e plots we are not at present cer- 

 tain ; but, in view of the fact that potassium chloride has in 

 a number of instances been shown to be distinctly inferior as 

 a source of potash for soy beans in comparison with other 

 salts in our experiments, it seems probable that such was the 

 case. The potash salts used on the different plots and the 

 rates of yield of beans per acre are shown in the following 



table : — 



Yields per Acre. 



