Emex australis, Nitrogen fertilizers, Trifolium subterraneum, Crop weed competition
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Until 20 years ago doublegees in Western Australia were mainly confined to the red-brown earth soils of the wheatbelt.
Since then, they have spread to light loamy sand soils in the wheatbelt, many of which have carried subterranean clover from the mid-1940s onwards.
It has been widely presumed that the spread of doublegees on to the lighter sandy soils of W.A. can be associated with the establishment of subterranean clover on these soils.
This report summarises the results of a glasshouse experiment on the effect of clover and nitrogen on the growth of doublegee.
Gilbey, D J.
"The effect of applied nitrogen and subterranean clover on the growth of doublegee,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 15:
3, Article 8.
Available at: https://library.dpird.wa.gov.au/journal_agriculture4/vol15/iss3/8