180 



EXPERIMENTS UPON GRASS LAND 



502- 



40 



30 



20 



Plot 3 



4-1 8 7 



5 17 



4-2 9 II 



FIG. 36. Percentage of Holcus lanatus in the Herbage of the Grass Plots. 

 First Crop, Season 1903. 



Unmanured. 



Minerals only. 

 4-1. Superphosphate. 

 8. No Potash. 

 7. Complete. 



Nitrogen only. 



5. Amm.-salts. 



17. Nitrate Soda. 



Nitrogen and Minerals. 



4-2. No Potash 



._ 

 9. Complete 



Am 

 Amm.- 



- ,. 



11. Excess N. J ' 



14. Complete ; Nit Soda. 



