JAMAICA. 



BULT.BTINr 



OF THK 



DEPARTMENT OF AGRICULTURE. 



Vol. II. JUNE, 1904. Part 6. 



MANURIAL EXPERIMENTS ON SUGAR CANE 



IN 1903. 



Part F, ' 



By H. H. Cousins, M.A., F.C.S., Island Chemist. 



The results of the experiments on 6 estates have been obtained to 

 date with the ratoon crop of 19'J ^ following the first series of experi- 

 ments with plants in 19' 2. 



The w( rk of supervision of these experiments has now been spe- 

 cially provided for by the cppointraent of Mr. T. H Sharp, Jr., B.S. A. 

 as Superintendent of Sugar Experiments. 



Albion Entatp, St. Thomas —J. Grinan, Esq. 



The results with D, 95 Ist ratoons agree with those obtained last 

 year. The manures show a general increase in all cases. A manure 

 consisting of 6 cwt. of a mixture of 3 parts superphosphate with 2 

 parts steamed bone flour, 1 cwt. Sulphate of Aramfaiia and | cwt. Sul- 

 phate of Potash per acre costing 56/ increased the yield by 1 1 tons of 

 cane at 10/ per ton (value of cane to the estate). This manure shows a 

 pro6t of 44/ per acre. Half a ton of Lime per acre yielded an increase 

 of 3 . 5 tons cane. 



With Mont Blanc canes, the results are quite different Last year 

 the n anures produced no results ; with the ratoon crop some of the 

 ].lots show an incre se but not a profitable one Avhile others show a 

 deficit both in tonnage and in cc st. 



A new series of plots has been arranged here as the old ones were 

 not considered altoge her satisfactory or uniform. Thanks are due to 

 J. Grinan Esq., and to the Mamger for their generous co-operation in 

 these experiments. 



