January, 1919.] SOD, TILLAGE AND FERTILIZERS. 



21 



■<ej.soK IS NOis-i«oa cog nvihsvisvn i 



P 1 T S 



CM lO 



m to 



t^ 00 o> o 



Fig. 6 — Chaht Showing the Comparative Twig Growth in the 10 Plots. 



Ten- Year Average. 



