. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig. II. N< si ol Polistes annularis showing the disease. other islands in other islam. Fig. 15. Polistes bellicosus Paris green or other poison for the control of this pt-t which, during these same years, caused SO much loss and expense in Polistes bellicosui in Barbados, and P. crinitus . are also active predators on caterpillars and other insects. En St. Vincent the value of P. annularis as an enemy of the cotton worm is so much appreciated that planters build sheds in and near cotton fields in order to encou
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig. II. N< si ol Polistes annularis showing the disease. other islands in other islam. Fig. 15. Polistes bellicosus Paris green or other poison for the control of this pt-t which, during these same years, caused SO much loss and expense in Polistes bellicosui in Barbados, and P. crinitus . are also active predators on caterpillars and other insects. En St. Vincent the value of P. annularis as an enemy of the cotton worm is so much appreciated that planters build sheds in and near cotton fields in order to encourage these wasps to make their nests there, and to give them ample nesting opportunities where they may be free from disturbance. The Barbados wild bee, or St. Vincent Jack Spaniard, has been introduced into Montserrat in the hope of establishing it in that island where it might help to control the cotton worm. So far, this introduction has only partly succeeded, and it has been discovered that this is due to the action of a so-called disease which destroys the young brood in the nest. (Fig. 14.) This disease proves to be due to the attack of a small moth, the larva of which penetrates through and through the nest, apparently destroying the larvae And pupae of the wasp. When the moth larvae become full-grown they pupate in the cells of the wasp's nest, each cell containing a cocoon, which terminates outwardly in a ridged cover or cap which can be distinctly seen in the cell of the nest. The moth which causes this diseased condition has been identified by the Imperial Bureau of Entomology as. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Great Britain. Imperial Dept. of Agriculture for the West Indies. Bridgetown, Barbados, Bowen & sons;
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Keywords: ., bookauthorgreatbritainimperiald, bookcentury1900, bookdecade1900
