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 turnijis, 

 barley, grass, and oats. The chief object of the experiments is to 

 determine the crop-pi'oducing *^alue of tlie various forms of the most 

 important manures. The manures on each plot contain 40 lbs. 

 Phosphoric Acid, 30 lbs. Potash, 10 lbs. Nitrogen. 



Phosphatic Manures. 



Plot 1. 

 2 



Z. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 



13. 

 14. 

 1.5. 

 16. 

 17. 

 18. 



Bone Ash, 



do. dissolved, 

 Ground Coprolites, 



do. dissolved, 



Bone Dust, 



do. dissolved. . 



Phosphatic Guano, 



do. dissolved, 



Ground Apatite, 



do. dissolved, 



No Phosphates, . 

 Bone Ash alone. 



with Sulphate of Potash. 



,, Muriate ,, 



,, Sulphate ,, 



,, Muriate ,, 



,, Sulphate ,, 



,, Muriate ,, 



,, Sulphate ,, 



„ Muriate „ 



„ Sulphate ,, 



,, Muriate ,, 



„ Sulphate ,, 



Nitrate of Soda. 



Nitrogenous Manures. 



Nitrate of Soda, . . with Bone Ash. Sulphate of Potash. 



Sulphate of Ammonia, . . ,, ,, Muriate 



Shoddy, . . . ■ „ „ Sulphate 



Dried JBlood, 

 No Nitrogen, 

 Nitrate of Soda alone, 



Ita,pe Cake and Cotton Cake, see Plot 35. 



19. 

 ■20. 

 •21. 



22. 



23. 



24. 

 25. 

 26. 



27. 



28. 

 29. 

 30. 



31. 

 32. 

 3.3. 

 34. 



35. 



36. 

 37. 



38. 



39. 

 40. 



Manures. 



with Nitrate of Soda. 



Bone Ash. 



Potash 



Sulphate of Potash, 

 Muriate ,, . ■ „ 



No Potash, . . • ,, 



Sulphate of Potash alone. 



Guanos. 



Peruvian Guano, ^ ^^^ ^^^^ 



Ichaboe , 

 Imitation , 

 Unmanured. 



Superphosphates. 



10 % Soluble Phosphate of Lime. Sulphate of Ammonia. Muriate of Potash. 

 20% ,, ,, ,, ,, 



QO y 



Ash and 1 

 I Sulphate of Potash 



Containing about 10 % Ammonia, 

 ^ and 10 % soluble Phosphate. 



Various Quantities, 

 f 



Same as Plot 1. 



„ 2. I 

 „ 14. I 



„ 20. { 



f a. Rape Seed Dust 

 I 6. Decorticated Cotton Cake. 

 Duplicates of Plots 1 to 22 each=Tr? acre. 

 Analytical Plot: 



1. Full Manure. 5. 



2. Without Phosphoric Acid. 6. 



3. ,, Nitrogen. 7. 



4. ,, Potash. 8. 



Sulphuric Acid, and Sulphate of Lime. < 

 J- Continuous white crops. 



Without Lime. 

 ,, Magnesia, 

 ,, Sulphuric Acid. 



Unmanured. 



a. 1 cwt. 



b. 2 cwt. 



