If we apply the yield factor to the total product of cane and the acreage under cane for
1965, 1970 and 1975, and compare it with the period 1950-59, we find that of the total
supply of sugar cane in 1975, 32% is due to a projected increase in yields in Jamaica; 13%
in Trinidad and Tobago. 7% in the Leeward Islands, Windward Islands and Barbados, and 5% in
British Guiana. The recovery of milled sugar from sugar cane is projected at the same rate
as that for 1940-60 (see Table llf). Table Ili shows projections of sugar production.

 For bananas, yields can be expressed in pounds which relate to stems per root or stems
per acre (which is also of course a function of roots per acre). Table 13c indicates that
there is a great variation between these factors in different territories. Since the exact
influence of the root/stem ratio as compared with the root/acre ratio on actual yields
cannot easily be predicted, we have simply projected the yield in terms of pounds and
stems per acre. Applying our yield factor to total projected production and acreage, we
estimate that in Jamaica, Trinidad and Tobago, and Grenada there will be no change in
yield; in Dominica and St. Vincent, 5% of the additional production in 1975 will be due to
increases in yield and in St. Lucia 3"' will be due to changes in yields. (See Table 13e.)
See Table 13d for projected acreages of bananas.

 Rice yields for the periods 1951-55 and 1956-60, and projected for the years 1965,
 1970 and 1975 are shown in Table 12c. The yield factor between the 1956-60 average and
 1975 is 27% in Jamaica, 14% in Trinidad and Tobago and 14% in British Guiana. Projec-
 tions of rice production are shown in Table 12d.

 Yields for sea island cotton during the period 1940-60 are shown in Table 14b. It will
be noted that yields per acre increased in the area as a wholebetweenthe 1940's and the 1950's,
although they did not increase in all territories. Projected changes in yields for the years
1965, 1970 and 1975 are slightly higher than for the year 1960, but rather below the ave-
rage of 1955-60. This means that changes in yields will have a negligible effect (Table 14e).

 Information on citrus and coffee, roots, vegetables, corn and pulses has been of so du-
 bious a nature that we have preferred to make projections in terms of total supply only.
 Although approximate projections of acreages are included in Tables 10a to 10d, so as to
 indicate roughly the changes in land use, it is not felt that they are reliable enough to use
 as a basis for projection of yields.

 For cocoa, however, more reliable information exists on account of the new planting
 programme. Because of this programme, yield factors are very important in local supply
 and, comparing the 1975 projected supply with the 1960 supply, we find that in Jamaica
 2.3, of the increased supply (expressed as yields per bearing acre) is a result of yield
 factors, in Trinidad and Tobago 21.6%, and in Grenada 34%.

 Some figures showing estimates of coconut yields are shown in Table 18b. There is a
 complete lack of reliable information on past yields per acre or per palm. The yield fac-
 tor, in terms of nuts per acre is approximately 10% in Jamaica and Trinidad and Tobago,
 and 12% in other territories. But, data are not considered reliable enough to estimate
 effects of the bearing/non-bearing ratio on yields in the future.

 No information is available on the yield factor in tobacco but the yield in Jamaica in the
 past has been about 410 pounds per acre-about half the world average.