106 



TRELAWNY. 



As representative of this important sugar parish, famous for the 

 quality of its rum, arrangements have been made for experiments 

 at Vale E-oyal, with the co-operation of Mr. Hoskins, attorney to the 

 Hon H. Sewell. 



The soil from the experimental plots gave the following results on 

 analysis : — 



SOIL ANALYSIS. 

 Reference Number — 61. 



Source Details — Experimental Plots, Vale Royal Estate, Trelawny. 

 Depth of Sample — 9 inches. 



PnysicAL Analysis. 



Per Cent. 

 Stones ... Nil 



Gravel ... 2.15 



Sand ... 5.96 



Fine Sand ... 11.65 [ Fine 



Silt ... 66.54 r Earth. 



Agricultural f Fine Slit ... p. p-f 1.13 



6.67 



Clay. IClay ... "'"' { 5!54 



Moisture ... 7.03 



Total ... 100.00 



Per Cent. 

 Retentive power for water ... 56.0 



Chemical Analysis. 

 (Soil passed through 3 m.m. Sieve dried at 100^ C. 



Insoluble Matter ... 38.002 



Soluble in Hydrochloric Acid ... 61.998 



rPotash ... 0.372 



I Lime ... 2.044 



'{ Phosphoric Acid >.. 0.653 



j Carbonic Acid as ) „ f.Q„ 



t Carbonate of Lime j •" '^^"^ 



Combined Water and organic matter 21.510 



Humus (soluble in Ammonia) 4.227 



Nitrogen ... 0.248 



Hygroscopic Moisture 7.562 



Fertility Analysis. 



Per Cent. 

 Available Potash „. 0.0024 



Available Phosphoric Acid ... 0.0226 



The mechanical analysis shows that the soil is fairly stiff, consist- 

 ing chiefly of silt with an appreciable amount of clay. Such a soil 

 would respond to deep cultivation and be benefited by efl&cient drain- 

 age. All the chemical factors are satisfactory, with one exception. 

 The phosphoric acid is enormous ; the nitrogen and humus unusually 

 high for a tropical soil. The carbonate of lime is abundantly present. 

 The available phosphoric acid indicates that manures providing this 

 ingredient are not likely to be required. On the other hand the 

 available potash is so low that I conclude the otherwise extraordinary 

 standard of fertility presented by this soil may be limited and ren- 

 dered inoperative through a lack of potash. The experiments with 

 manures should throw light on this point. The following scheme has 

 been carried out : - 



