Abstract
ENGLISH tomato growers in the Lea Valley are threatened with an annual loss of from 5l.–10l. per acre unless special remedial measures are adopted against the glasshouse tomato moth, Polia (Hadena) oleracea. L. Lloyd (Monthly Circular of the Lea Valley and District Nurserymen's and Growers' Association, Ltd.) finds that spraying with lead arsenate for the destruction of the pest must be supplemented by trapping the caterpillars and moths and by destruction of the pupæ. The caterpillars can be trapped in old sacks, and ultimately killed by boiling water, while the moths are attracted to wide-mouthed jars containing brown treacle and ale mixed with 1 per cent, of sodium fluoride. Emphasis is laid on the necessity for ascertaining that each control measure is effective.
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Control of Insect Pests. Nature 105, 629 (1920). https://doi.org/10.1038/105629a0
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DOI: https://doi.org/10.1038/105629a0