182 



EXPERIMENTS UPON GRASS LAND 



Fig. 37. — Percentage of Tri/olmm repens, Trifolium pratense, and Lotus corniculatus 

 (together) in the Herbage of the Grass Plots. First Crop, Season 1903. 



Unmanured. \ Minerals only. 



4-1. Superphosphate. 

 I 8. No Potash. 

 7. Complete. 



Nitrogen only. Nitrogen and Minerals. 



5. Amm.-salts. 4-2. No Potash \ a „„ _ 

 17. Nitrate Soda. 9. Complete \ ^ ,'~ 

 11. Excess N. J '^'*'- 

 14. Complete; Nit. Soda. 



