. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 292 ^ THE AGRICULTURAL NEWS September 14. FRUITS AND FRUIT TREES. A NEGLECTED CONSIDERATION IN CACAO CULTIVATION. 'The hygrometric state of the air is the most important factor miking for success in a cacao plantation, although it his been the least considered up to the present.' This is the translation of a sentence appearing at the head of one of a series of articles dealing with African cacao that are being published in UAgriculture Pratique des Paya ChawU, the special article emp'oyed in giving the follo
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 292 ^ THE AGRICULTURAL NEWS September 14. FRUITS AND FRUIT TREES. A NEGLECTED CONSIDERATION IN CACAO CULTIVATION. 'The hygrometric state of the air is the most important factor miking for success in a cacao plantation, although it his been the least considered up to the present.' This is the translation of a sentence appearing at the head of one of a series of articles dealing with African cacao that are being published in UAgriculture Pratique des Paya ChawU, the special article emp'oyed in giving the following informa- tion being contained in the issue of that journal for May last. As far as the knowledge of the writer is concerned, J. H. Hart was the first to point out that the humidity of the air plays a preponderating part in the growth of cacao, and he states that this opinion is finding confirmation con- tinually in cacao-growing in Africa. Theoretically, the matter may be deduced from the examination of meteorologi- cal observations. On the Gold Coast, as in Nigeria, it is easy to remark the irregularity of th-i rainfall, and the con- siderable deviations in temperature which are the character- istics of the climate of both , particularly as one approaches the north, towards the limit of the zone that can be cultivated. On the contrary, a remarkable constancy is noticed in the relative humidity of the atmosphere, and for the first time an enormous deviation, principally among the minima of the humidit)', between the figures observed for the centres of cultivation of the Gold Coast and Gambaga, .•situated at the extreme north of the Colony, wliere as much rain falls as at Aburi, and where cacao cultivation cannot be carried out. In practice, a large number of observations show that the cacao plant suffers very severly from the dryness of the air, and that much of the want of success in cultivating this plant arises from the little care taken by planters to provide
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