Elders boss Mark Allison says Nutrien's $469 million takeover of Ruralco is a blessing in disguise that will deliver his company a big boost in market share in farm services.

Mr Allison said Elders would emerge as the last major Australian-owned farm services provider and will be able to consolidate its position during the fallout from the Canadian fertiliser giant and Landmark owner paying "a very, very full price with high integration risk" for Ruralco.