Arthur Le Feuvre, Warwick (email@example.com)
By and large, little has changed. Scattered light falls in some regions will keep worm populations ticking over. They are unlikely to enlarge - test before drenching.
As we go to print, substantial rain is predicted - let's hope it eventuates!
As there will be few larvae on the paddocks in most districts, a bit of smart thinking on what to do early after rain could pay dividends.
Barbers Pole (and others) worm larvae that is over-droughting in the gut wall in an inhibited state will emerge, mate and start the next crop of worms when the green feed comes on. Do worm egg counts about 6 weeks after significant rain and when green grass has been available. If there is evidence of a worm population emerging, consider what the weather outlook is. If it looks like more rain (hopefully), then a highly effective combination drench will really stop any contamination of pastures and will hopefully kill all resident worms.
Do NOT drench just in case and don't use a single active drench that might not give an adequate kill.