July 22, 191S 
Salt Requirements for Buckwheat Plants 
169 
The average relative yields of seeds are represented graphically on the 
triangular diagram of figure 3, in the same manner as are the yields of tops 
and of roots on the diagrams of figures 1 and 2, respectively. The range 
of the average relative yields of seeds extends from 0.35 to 2.62. On the 
diagram representing these yields the main area of high dry weights 
(2.14-2.62) occupies a central region at the ba%e of the triangle, extending 
upward to the right margin at culture R5C4. A small outlying high area 
is also indicated about culture R2C7. The highest yield of seeds occurred 
Fig. 3-—Diagram showing relative yields of buckwheat seeds. Areas of high yields are indicated by small 
crosses, those of low yields by small circles. The culture giving the highest yield is marked by a larger 
cross, that giving the lowest yield by a larger circle. 
with culture R3C3, which produced a medium yield of tops. The main 
area of low yields (0.35-1.31) extends along the left margin to thj base of 
the triangle, and a smaller low area is shown at the apex and another at 
culture R4C3 at the center of the diagram. The lowest yield of seeds 
was produced by the plants of culture R4C1. A comparison of the 
diagram of figure 3 with the upper diagram of figure 1, representing the 
yields of tops, shows that there is little correlation between high top 
yields and the production of large yields of seeds. Only two cultures, 
R3C4 and R4C4, which produced high top yields are included in the 
areas of high yields of seeds, and these two cultures mark the lower limit 
in the range of high yields of tops. On the other hand, the main area of 
