Fig. 20. Rye growing in surface soil (Pot 3), subsoil (Pot 4), and sand (Pot 5)
Figs. 20 and 21 are photographs of sets of plants grown in this way; the weights in grains were:—
Green weight After drying
Rye Mustard Rye Mustard
Plants grown in
top soil (Pot 3) 14.5 17.7 5.6 2.6
" " "
subsoil (Pot 4) 2.9 5.1 1.6 1.1
" " "
sand (Pot 5) 2.0 4.6 0.8 1.0
