Doublegee (Emex australis Steinh.) seed banks.

摘要

Farmers can control doublegee, Emex australis, on an annual basis by integrating cultural and chemical control methods, but it is still not possible to achieve long-term control or eradication of this weed. It is suggested that any control measure that reduces seed dormancy or destroys the dormant seed bank would be of immense value in the long-term management of this weed. Unfortunately, practical methods for achieving this are still unavailable. Nevertheless, some important studies on its seed dormancy behaviour and the persistence of its seed banks have been undertaken in Western Australia. This paper discusses the findings of these studies under the following headings: dormancy in relation to seed banks; seedling emergence; seed survival; andstimulating germination to reduce seed banks.