Effect of clover-free rotations upon the severity of root rot and yield in regenerating subterranean clover pastures [Trifolium subterraneum; Western Australia]
1991
Barbetti, M.J. (Western Australian Dept. of Agriculture, South Perth)
In 2 field trials, complete removal of subterranean clover for 1 season, or particularly 2 seasons, significantly reduced tap and lateral root disease in the immediate following year in which subterranean clover was allowed to regenerate. By the second season of regeneration these effects were either small or absent. There was a greater effect on reducing lateral than tap root disease by clover-free rotation. The losses in terms of subterranean clover herbage and seed yield during the period of removal were not offset by the subsequent benefits from root disease reductions, therefore clover-free rotation does not appear to be a useful agronomic practice in the high rainfall zone in Western Australia.
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