91 



Fertility Analysis. 

 Available Potash ... ... 0.0182 



Available Phosphoric Acid ... 0.0091 



The results obtained in tlie experiments indicate that a complete 

 manure was productive of a profit of £10 per acre— the value of 20 

 tons of cane. This is quite eclipsed, however, by the still greater re- 

 sults of deep drainage and special tillage operations. 



The gross yields of cane per acre from this estate are remarkable 

 and are here recorded to show that Jamaica soils can produce crops of 

 cane that challenge comparison with any other soils of the West Indies. 



The arrangement of the manurial plots was as follows : — 



Canes — '' Holland Estate" St. Elizabeth — M. E. M. Farquharson, Esq' 

 12 Plots each -d • ai Nitrate of Muriate of 



VVAcre. Basic Slag. g^^^ p^^^l^^ 



Plot 1 No Manure _ _ 



„ 2 Complete Manure 3 cwt. 1| cwt | owt. 



„ 3 No Nitrogen 3 „ - ^ „ 



„ 4 Double Nitrogen 3 „ 3 cwt. | „ 



„ 5 No Phosphate - 1^ „ I » 



,, 6 Double Phosphate 6 cwt. l| ,, ^ „ 



„ 7 No Potash 3 „ 1^ „ 



„ 8 Double Potash 3 „ 1^ „ 1 cwt. 



„ 9 No Manure - - - 



„ 10 Cowpeas - - - 



„ 11 Lime, 10 cwt. - - - 



„ 12 Pen Manure. - - - 



The canes were planted on Oct. 29, 1901, and were reaped on 

 February 17, 1903 — 16 months old. The rainfall during the growth of 

 the crop was 86.45 inches The drainage trenches were from 14" — 27" 

 in depth, while the main drainage gut is 26 to 35 inches deep. 



Mr. Cradwick of the Agricultural Department supervised the weigh- 

 ing of the experiments and reported the weights of cane and tops as 

 also the crushing with the estate mills An average sample of the 

 juice from the experimental canes was reserved for analysis. 



