SOr.!LE RELATIONS OF IjIAINTAINED TELDPERATUEES 

 TO GERMIKATIOIT AM) THE EARLY GRO:^TH OF 

 TREAT IN miTRIENT SOLUTIOTIS. 



INTROmJCTIOn. 



In the autumn of 1918, the Cononittee on the Salt 

 Requirements of Certain Agricultural ^lants of the United 

 States National Research Council, inaugurated a coopera- 

 tive study of t he is-rowth of wheat plants in nutrient 

 solutions. 'this prospective cooperation was to involve 

 the carrying out of comparative experimental tests with a 

 large number of nutrie nt s olutions, these solutions differ- 

 ing according to a ref^ular scheme. For a beginning, several 

 different somewhat arbitrarily selected developmental phases 

 of the wheat plant were to be studied. It was realized that 

 a nutrient solution might be well suited for good grov/th 

 during one phase of the plant's development and not so for 

 another phase. All cooperators were to use seed from the 



''^'Livingston, Burton E. (Editor). A plan for 

 cooperative research on the salt requirements of represent- 

 ative agricultural plants, prepared for a special committee 

 of the Division of Biology and Agriculture of the ITational 

 Research Council. 2nd Ed. 54pp.., Baltimore, 1919. 



