Merrett family's cropping blocks straddling the South Australia-Victoria border head to auction in spring.

Nationals leader, David Littleproud, won't hesitate to push for a Senate inquiry into national interest risks of foreign bids for Incitec Pivot Fertilisers.

The homestead block of a solid cropping/grazing offer at Towaninny, between Wycheproof and Lalbert, has been sold for $2300 per acre.

Calving in Gippsland had been positive, but farmers are wary heading into summer.