184 



EXPERIMENTS UPON GEASS LAND 



20 



15 



10 



nil 



Plot 3 



nil 



4-1 8 



17 



4-2 9 II , 14 



FIG. 38. Percentage of I atliyrus pralensis in the Herbage of the Grass Plots. 

 First Crop, Season 1903. 



Unmanured. 



Minerals only. 

 4-1. Superphosphate. 

 8. No Potash. 

 7. Complete. 



Nitrogen only. Nitrogen and Minerals. 



5. Amm. -salts. 

 17. Nitrate Soda. 



4-2. No Potash , . 



_ Amm.- 



9. Complete V .. 



11. Excess N. J ' 



14. Complete; Nit. Soda. 



