No. 553] VARIATION IN CORN AND REANS 



59 



occurred, the same records were made in such a ma 

 indicate their parent stalks. The plants on space of 1 

 each end of the plots were omitted in 



Check 



f Nitrate of soda > 

 I Acid phosphate J - ' 



Acid phosphate. . . . 

 I Acid phosphate 1 

 I Sulphate of potash j 



Check 



Sulphate of potash. 

 / Nitrate of soda ) 

 I Sulphate of potash f 



Nitrate of soda ] 

 ■ Acid phosphate > 

 { Sulphate of potash J 



( NitSe of soda"" Y 

 Acid phosphate [ 

 { Sulphate of potash J 



[ NitratTof s a oda Un S ) 



Acid phosphate 

 ! Sulphate of potash \ 



[Maoure CeSS) 



Table I gives figures bearing on the productiveness of the 

 corn, and indicates that the deficient element was nitrogen. 1 

 There is no indication that the addition of potash or phosphorus 

 decreased the number of barren stalks at all, nor did either 

 alone increase the number of two-eared stalks of ear-bearing 

 suckers, though there appears to bo considerable benefit from 

 each when applied with nitrogen, and still more when all three 

 are supplied. The addition of manure results beneficially in all 

 ways, possibly on account of its physical action as well as by the 

 direct addition of plant food. 



