. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 10 TIIH AGRICULTURAL NEWS. January 2, 191").. INSECT NOTES. NOTES ON WEST INDIAN PESTS. The following brief nob s an based upon the information transmitted in the [terns of Departmental Interest for No- vember last, and they present a general account of what is going "ii in the other islands. In St Vincent, the chief pest of cotton was the black scale on cotton. This insect, Saissetia nigra, is well con- trolled, ordinarily, in tin- other islands, by its parasite, Zalophothrix mirum, but in St. Vincent, t
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. 10 TIIH AGRICULTURAL NEWS. January 2, 191").. INSECT NOTES. NOTES ON WEST INDIAN PESTS. The following brief nob s an based upon the information transmitted in the [terns of Departmental Interest for No- vember last, and they present a general account of what is going "ii in the other islands. In St Vincent, the chief pest of cotton was the black scale on cotton. This insect, Saissetia nigra, is well con- trolled, ordinarily, in tin- other islands, by its parasite, Zalophothrix mirum, but in St. Vincent, the parasite, although present, does not seem to exert the -aim' control over the scale insect. At Montserrat tin- chaff scale (Parlatoria pergandei) is reported to he more troublesome on citrus trees at (Jrove Station than the purple scale (Lepidosaphes beckii). Cotton worm attacks were severe along the Leeward side of the island, possibly lh«' most severe recorded in that island. Cotton stainers are suspected of being connected with the occur- rence of the internal boll disease of cotton. It is thought that the punctures made by the stainers in feeding furnish a means for the disease organisms to gain access to the interior of the bolls. On some of the lime estates, and at Grove Station, hard hacks are being collected. The insects referred to as hard hacks in this instance are probably the adults of the Leeward Islands root borer {Exophthalmus esuriens) which, it will he remembered, appeared in great numbers in certain lime fields in Antigua and Montserrat in the early part of 1914 (see Agricultural Weivs, Vol. XIII, p. 250). This ? collection of beetles marks tin- adoption of a new practice in Montserrat. It is also stated that interesting experiments with lime plants are in progress, some of which are in connexion with the effects of Exophthalmus grubs in the -oil, and others with the purple scale. In Antiguaalso, attacks of tin cotton worm were recorded during I lie month.
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