Abstract:
|
Populations of the winter annual Emex australis were established by initiating irrigation at monthly intervals, beginning in mid-summer. Natural seedling densities varied from 100m2 when irrigation was begun during late January to almost 700m2 when it began at the end of March. Densities were increased by sowing non-dormant seeds, but most sown seeds became dormant when introduced before autumn. Plants which emerged after the earliest irrigation grew most rapidly. Those originating from the latest irrigat
|