j^ with Potash Salts and Nitrate of Soda. 



Scheme of Experiments at the Experimental Agricultural 

 Stations of the Highland and Agricultural Society of 

 Scotland, commenced May 1878. 



At each station there are 10 acres under experiment, divided into 40 plots 

 of 1 rood each. The cropping is a rotation of turnips, barley, grass, or 

 beans and oats. The chief object of the experiments is to determine the 

 crop-producing value of the various forms of manures in common use. The 

 manures on each plot contain 40 lbs. phosphoric acid, 30 lbs. potash, 20 lbs. 

 nitrogen, unless otherwise indicated. 



Plot. Phosphatic Manures. 



1. Bone Ash, . 



2. Bone Ash, dissolved, 



3. Ground Coprolites, 



4. Ground Coprolites, dissolved 



5. Bone I\Ieal, ... 



6. Bone Meal, dissolved, . 



7. Phosphatic Guano, 



8. Phosphatic Guano, dissolved 



9. Ground Mineral Phosphate, 



10. Dissolved Mineral, 



11. No Phosphates, . 



12. Bone Ash alone. 



Nitrogenous Manures. 



13. Nitrate of Soda, . 



14. Sulphate of Ammonia, . 



15. Horn Dust, . 



16. Dried Blood, 



17. No Nitrogen, . . .J 



18. Nitrate of Soda alotie. 



Piai^e Cake and Cotton Cake, see Plot 35. 



Potash Manures. 



19. Sulphate of Potash, 



20. Muriate, 



21. No Potash, 



22. Sulphate of Potash alone. 



with Potash Salts and Superphosphate. 



\ 



with Nitrate of Soda and Superphosphate. 





23. Peruvian Guano, 



24. Fish 



25. Ichaboe 

 26. 



27. Unmanured. 



Superphosphates 



28. 10 % Soluble Phosphate of Lime, 



29. 25 7, 



Guanos. 

 Containing about 10 per cent. Ammonia. 



30. 40 7, 



/ with Sulphate of Ammonia and 

 ' ]\Iuriate of Potash. 



j5 



5J 



\ 



Various Quantities. 



31. Same as Plot 1. } ^^ ^^^^^^^^ ^''' ^"^^■ 



32. 

 33. 

 34. 



35. 



36. 

 37. 



38. 



39. 



40. 



5> 



)J 



?> 



)) 



J' 



') 



j a. Rape Dust, 



\a. % 

 )a.% 



20. I l I 



2 

 14 



\ 



5' 

 55 

 55 

 55 

 55 

 55 

 55 



{ h. Cotton Cake Dust, ^ 

 Unmanured. 



with Potash Salts and Superphosphate. 



( n. 1 cwt. ) 



< Supersulnhiite of Lime. • ,' ^ ' [ 

 ( ^ •■ ' { h. 2 cwt. ) 



> L^nmanurtd. 



besides Manures as in Plot 7. 



