Practical and economic aspects of rabbit control in hilly semiarid South Australia

Abstract

Poisoning, ripping of warrens and a combination of both techniques were assessed as means of controlling rabbits in steep areas of the southern Flinders Ranges in semiarid South Australia. The number of active warren entrances was reduced significantly by poisoning and by ripping. One month after treatment, untreated plots contained an average of 72.2 active entrances whereas the poisoned and ripped plots averaged 27.1 and 7.3 active entrances, respectively. A combination of both techniques reduced the number of active warren entrances even further, but this is not recommended because it increases the cost of control substantially. The efficiencies of a large and a small crawler tractor were compared. Costs of ripping were similar, and the suitability of each tractor is discussed. In the southern Flinders Ranges rabbit control is clearly economical in relation to the improvements in sheep production likely to be obtained.