Abstract
Abstract The accepted strategy for the control of locust plagues is to check an upsurge of population before swarms break out and start a widespread plague. The organisation, men and materials necessary for this work must be established before locust plagues are imminent. Primary targets for control are the hoppers. Red locust hoppers can be efficiently controlled only by vegetation baiting with dieldrin. The ULV drift-spraying method of application is particularly successful. Objections to the use of dieldrin on environmental grounds have been put forward but are without substance when the recommended method is used. A small aircraft can blanket spray 5,000 ha/h using the ultra low dosages necessary for desert locust hoppers. Three such aircraft could cope with the area of red locust hopper outbreaks although the dosage necessary for these is likely to be higher in the denser vegetation of their habitat. Field trials to establish the lowest dosage rate for red locust hoppers are urgently required. If the...
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