75 



cassava in Jamaica at a cost that should enable us entirely to 

 replace Potato starch in the British market. 



4. Cassava can be grown to give a large yield upon a soil and 

 with a rainfall that would not give good crops of sugar cane 

 without irrigation. Large areas of land, at present producing 

 little or nothing, could be profitably used for the growth of cas- 

 sava for starch manufacture. This is an industry that can be 

 confidently recommended to capitalists and land owners as one of 

 the most promising means of increasing our exportable produce 

 without trenching upon land at present productive of other pay- 

 ing crops. 



I desire to acknowledge the work of Mr. F. A. Thompson of 

 this Department in analysing the tubers and the careful way in 

 which the Superintendent at Hope Gardens recorded these results 

 in the field. 



Cassava Trials III. 

 (Twenty-one varieties harvested after 21 months growth.) 



2 



.iH 



1 



2 

 '6 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 

 13 

 U 

 15 



16 



17 

 18 

 19 

 20 



21 



Variety. 



Tubere 



Tons 

 per 

 acre. 



Blue Top 



Black Stick 



Smalling 



Mullinga 



Long Leaf Blue Bud. 



Duff House 



Prize or Silver Stick. 



White Smooth Bitter. 



White Slick 



Brown Stick 



Black Bunch of Keys 



White Top 



Silver Stick 



Bobby Hanson 



Black Bitter Long Leaf 



Blue Bud 

 White Bunch of Keys 

 Cotton Tree 

 Luaua Sweet 

 New Green 

 Rodney 



Luana Bitter 



21.9 

 18.0 

 19.3 

 18.0 

 15.4 

 15.4 

 12.9 

 12.9 

 11.6 

 11.6 

 11.6 

 11.6 

 10.3 

 10.3 



9.0 

 9.0 

 9.0 

 9.0 

 11.6 

 10.3 



9.6 





o 



61.9 

 68.3 

 59.2 

 64.4 

 55.9 

 60.2 

 5S.0 

 57.0 

 54.8 

 58.5 

 60.3 

 60.8 

 58. 3 

 56.1 



65.3 



67.6 

 55.5 

 61.3 

 64.4 

 65.9 



64.9 



38.1 

 41.7 

 40.8 

 35.6 

 44.1 

 39.8 

 42.0 

 43.0 

 45.2 

 41.5 

 39.7 

 39.2 

 41.7 

 40.9 



44.7 

 42.4 

 44.5 

 38.7 

 35.6 

 34.1 



35.1 



1.8 

 1.6 

 0.9 

 1.1 

 1.0 

 1.4 

 1.5 

 1.1 

 1.8 

 1.3 

 1.4 

 0.9 

 1.4 

 1.1 



33.2 

 38.2 

 32.0 

 32.8 

 38.0 

 36.4 

 36.9 

 34.3 

 37.3 

 34.2 

 34.1 

 33.5 

 37.1 

 35.5 



Gain per 



acre from 



15 to 21 



months. 



1.0 37.4 



1.5 

 0.9 

 1.5 

 1.3 

 1.7 



1.5 



36.9 

 36.7 

 35.1 

 26,4 

 28.3 



29.7 



15,818 



16,433 



13,883 



13,277 



13,187 



12,632 



10,666 



9,920 



9.742 



8,927 



8,894 



8,753 



8,574 



8,197 



7,567 

 7,466 

 7,221 

 7,102 

 6,895 

 6,547 



6,425 



2.1 



2.5 



6!9 

 5.1 

 0.6 



O.2I 



6,085 

 10,236 

 5,330 

 5,097 

 330 

 5,034 

 6,622 

 2,485 

 6,615 

 1,522 

 4,308 

 1,115 

 3,974 

 2,063 



2,374 

 2,560 



'562 



38,08 



384 



Loss 

 1,261 



Loss 



