184 



EXPERIMENTS UPON GRASS LAND 



25^ 



nil 



nil nil 



l_ 



Plot 3 4-18 7 5 J7 4-2 9 M 14 



Fig. 38.— Percentage of Lathyrus pratensis in the Herbage of the Grass Plots. 

 First Crop, Season 1903. 



Unmanured. Minerals only. 



4-1. Superphosphate. 

 8. No Potash. 

 7. Complete. 



Nitrogen 07ily. I Nitrogen and Minerals. 

 5. Aram. -salts. 4-2. No Potash ^ . 

 '" ^^^-^-^-" ' 9. Complete K"]J°' 

 11. Excess N. J '*'^- 

 14. Complete; Nit. Soda. 



17. Nitrate Soda. 1 



