. Bulletin of the Department of Agriculture, Trinidad and Tobago. Plants -- Trinidad and Tobago; Agriculture -- Trinidad and Tobago. 150 TBINIDAD AND TOBAGO BULLETIN. {XVIII. 3. The lack of relation between the total rainfall and the cane crop is shown still more distinctly if we compare the rainfall on an individual estate for a number of years with the yield psr acre on I "A i J'. ••• .•• t309(, "i-^' '7*8' ^7 yfa *rii tin ii-o jj^t ' /3-^ in^ 'JfTT Fig. 4. Fig. 4.—Annual rainfall and yield per acre on a Trinidad sugar estate, showing aVjsence of distinct relation between the two.
. Bulletin of the Department of Agriculture, Trinidad and Tobago. Plants -- Trinidad and Tobago; Agriculture -- Trinidad and Tobago. 150 TBINIDAD AND TOBAGO BULLETIN. {XVIII. 3. The lack of relation between the total rainfall and the cane crop is shown still more distinctly if we compare the rainfall on an individual estate for a number of years with the yield psr acre on I "A i J'. ••• .•• t309(, "i-^' '7*8' ^7 yfa *rii tin ii-o jj^t ' /3-^ in^ 'JfTT Fig. 4. Fig. 4.—Annual rainfall and yield per acre on a Trinidad sugar estate, showing aVjsence of distinct relation between the two. the same estate for the corresponding year (Fig. 4). It will be seen that the highest yields per acre between 1905 and ]918 on this particular estate were obtained in years of low total rainfall ^903- 9, 1914-15). It is worthy of notice in this connection that the total rainfall of Trinidad is no greater than that of I'mrbados, yet in the latter island a low rainfall almost invariably produces a small crop. The explanation is found in the that, in spite of similar rainfall, Barbados is very much drier both in soil and atmosphere than Trinidad. The porous coral soil and rock in the former island allows the moisture to drain away more rapidly than do the heavier soils of the Trinidad canefields ; and the more constant sea breezes and the lack of forest areas in Barbados prevent the formation of a stagnant moisture-laden atmosphere frequent over the canefields in Trinidad, where even in the middle of the dry season the cane plants are dripping with dew every morn- ing. A Trinidad sugar estate with a rainfall of fifty inches in considerably moister, in practice, than a Barbados estate with the same rainfall. In Trinidad, therefore, it appears that the total rainfall during the year is not an important determining factor in the sugar crop of the island. Even in dry years there is sufficient moisture present to produce a good crop, provided only that it is properly
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