10 Aug., 1916.] Experimtnis in the Cultivation of Potatoes. 



469 



The results of the tests on the " Flat" land are given herewith 



Section 1. — " Flat " Land. 

 Manure Tests — Un-Linied Portion. 

 Average cf all varieties. 



No Manure 



4i tons Stable Manure 



4 cwt. Potato Manure 



4 cwt. Blood 



4 cwt. Blood and Bone 



4 cwt. Blood and Bone. 1 cwt. .Sulphate of Potash 



2 cwt. Basic Phosphate, 2 cwt. Blood, 1 cwt. Sulphate of 



Potash . . 

 No Manure 

 6 cwt. Sujjcr. 

 4 cwt. Super., 1 cwt. Sulphate 



of Ammonia 

 4 cwt. Super., 1 cwt. Sulphate of Ammonia 

 4 cwt. Super., 1 cwt. Sulphate of Potash 

 4 cwt. Super.. 1 cwt. Sulphate of Ammonia, 2 cwt. Sul 



phate of Potash . . 

 No Manure 



of Potash, 1 cwt. Sulphate 



A remarkable result obtained here is the large increase in the crop 

 caused by the application of a very small dressing of stable manure of ^h 

 tons to the acre. The crops grown on the plots treated with phosphoric 

 acid and potassic manures also showed a marked increase thereby demon- 

 strating the need of such manures in this soil. On the limed sub-section 

 the results of which follow, similar increases were harvested, which 

 further proves the responsiveness of this land to manuring. The appli- 

 cation of lime at the rate of 1 ton per acre gave no noticeable results this 

 season, probably due to the fact that it was applied somewhat late. 

 Its effect will probably be marked in next year's crop. 



Manure Tests — Limed Portion. 



Sulphate of Potash 



1 . No Manure 



2. 4i tons Stable Manure 



3. 4 cwt. Potato Manure 



4. 4 cwt. Blood 



5. 4 cwt. Blood and Bone 



6. 4 cwt. Blood and Bone, 1 cwt 



7. 2 cwt. Ba>ic Phosphate, 2 cwt. Blood, 1 cwt. Sulphate o 



Potash . . 



8. No Manure 



9. () cwt. Super. 



10. 4 cwt. Super., 1 cwt. Sulphate of Ammonia, 1 cwt. Snlpliati 



of Pf)tash 



1 1 . 4 cwt. Super., 1 cwt. Sulphate of Ammonia 



12. 4 cwt. Super.. 1 cwt. Sulphate of Potash 



13. 4 cwt. Super., 1 cwt. Sulphate of Ammonia, 2 cwt. Sul 



phate of Potash . . 



14. No Manure 



Value per 



.\cre. at £5 



per Ton. 



£ 8. d. 



8 15 



33 15 



23 15 



15 



18 15 



21 5 





 10 

 15 



15 



26 I 



8 1.' 



21 ; 



30 



27 10 



38 15 



41 5 



8 15 



