1922.] SUGAR CANE EXPERIMENTS, 1920-22. 79 



From this table it will be seen that, in making this selection, a 

 much higher standard as regards the quality of the juice has been 

 adopted than that for the first year's selection of seedlings. Although 

 the stools and the canes of most of these seedlings are rather small, it 

 is considered advisable to give them a further trial owing to the 

 high quality of the juice. T. 1046 and T. 1041 have given juice 

 of exceptionally good quality. 



Cuttings from these ten varieties will be planted out in plots 

 about October-November, 1922 and grown in competition with the 

 standard varieties. 



Results o£ Tests oS Varieties. 



The results of the tests of varieties grown in plots which form 

 the second part of this report may be sub-divided into two parts : — 



(a) New Trinidad varieties obtained from seedlings raised 



from 1917. 



(b) Newly introduced and other varieties. 



The canes under report were grown at the Experiment Station, 

 St. Augustine, as plant canes, first and second ratoons. Plant canes 

 receive an application of pen manure at the rate of 15 tons per acre ; 

 no manures were apphed to ratoons. The canes received ordinary 

 estate cultivation. Mechanical tillage, i.e. passing the small plough 

 and cultivator between the cane stools, is performed in the early 

 stages of growth. After the canes have grown too tall to be worked 

 by implements manual labour is substituted. 



During the period under review great care has been taken to 

 eradicate the Mosaic disease. Each field was systematically examined 

 at least once a month, all cane stools which shewed signs of the 

 disease were dug out and removed from the field. The number of 

 diseased cane stools which had to be dug out was much less than m 

 the previous year. Froghoppers were practically nil and the cultiva- 

 tion suffered very Httle from root disease. The crop of canes reaped 

 was the highest on record, viz:— 1765.7 tons; an average yield of 

 26.75 tons per acre. 



The results obtained for plant canes are recorded in Tables IV, 

 V and VII to IX, those from the first ratoons in Tables VI and X 



