36 



Maine Agricultural Experiment Station. 1919. 



up to a point far beyond the amounts that would be likely to 

 prove beneficial. After careful consideration this plan was 

 adopted 



THE TRIANGULAR DIAGRAM. 



The triangular diagram as suggested by Schreinmacher, 

 which has been of great service to physical chemistry where 

 both theoretical and practical consideration of percentage com- 

 position of 3 component parts are concerned, has been adapted 

 by Schreiner* to investigations in plant nutrition where it is 

 desired to consider the 3 component parts, ammonia, phos- 

 phoric acid and potash, of a fertilizer mixture. It is possible 

 to represent graphically any possible combination of mixtures 

 of these 3 component parts by the use of an equilateral tri- 

 angular diagram, as shown in figure 7. 



The Triangular Diagram. 



*Oswald Schreiner, Bureau of Soils, U. S. Department of Agri- 

 culture Bulletin 70, Botanical Gazette, Vol. 1, No. 1, and elsewhere. 



