Abstract
Ten per cent phorate ('Thimet') granules were broadcast on to pastures to control the lucerne flea, Sminthurus viridis (L.) and the red-legged earth mite, Halotydeus destructor (Tuck.). A rate of one ounce of active ingredient an acre gave effective control of both pests, principally by fumigant action. Biscirus lapidarius Kramer, a useful bdellid mite preying upon the lucerne flea, was reduced in numbers by this treatment. Rain during or immediately after application inhibited the fumigant action. Changes in population density after treatment provided indirect evidence of the mechanisms of density regulation in these pests.
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