Summary.Experiments are described in which appreciable reductions in bulbs of the widespread pentaploid variety ofOxalis pes‐capraeL. were obtained by two cultivations, one at the time of old bulb exhaustion (late May to mid June) and the other in late July or early August. The second cultivation was required to kill plants regenerated from the stems and crowns of plants injured at the first cultivation and was timed to take place before the appearance of new bulbs.Where heavy infestations had been lowered by such cultivations, it proved possible to reduce bulbs still further to very low levels (140 or less kg/ha), acceptable for long‐term control, by spraying with fenoprop (2.2 kg/ha) in the following year. The use of fenoprop alone without previous cultivation and of cultivation alone without subsequent spraying was inadequate except on less severe infestations on light soils.Études sur l'Oxalis pes‐capraeL. en Australie. II. Méthodes de lutte contre la variété p
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