388 
Vol. XXVIII, No. 4 
Journal of Agricultural Research 
Five control cultures were used during each phase of growth studied. The 
control solution was Shive’s 2 best solution, with a molecular proportion of 3.77 
KH 2 P0 4 ,1.09 Ca (N0 3 ) 2 , and 3.14 MgS0 4 . This is a combination comparable to 
culture No. 16 in the accompanying figures. 
In the study of the fruiting phase, cultures were begun January 2, 1923; the 
vegetative phase was marked as beginning February 6, and the fruiting phase, 
April 17. The plants were harvested June 1. 
The daily maximum and minimum temperatures during these periods of growth 
are presented in Table I. 
* Shive, J. W. a study of physiological balance for buckwheat grown in three-salt solutions. 
N. J. Agr. Exp. sta. Bill. 319, 63 p., illns. 1917. 
