A MINING company will use the controversial practice of "fracking" on fertile Victorian farmland.

And the fracking will occur near one of the biggest vegetable farms in one of Victoria's most productive farm districts, where the mining company has been buying up farms.

Fracking involves injecting pressurised fluid, including chemicals, into rocks to fracture them to get at the fossil fuel beneath.

Lakes Oil intends to frack for gas near Seaspray, in Gippsland, next month.

Local pro-farming group Community Over Mining campaign organiser Tracey Anton said the organisation held "serious concerns" about the fracking polluting or draining aquifers.

The process risked farmland that held "huge amounts of community wealth and investment", she said.

Ms Anton called for a "full moratorium" on fracking and said mining companies could not prove where all fracking fluid ended up.

Victorian Farmers Federation Bairnsdale branch president Rob Grant said scientists had established that aquifers from East Gippsland to the Latrobe Valley - 150km away - were connected.

The aquifers stretch under the Macalister irrigation district, where Lakes Oil will explore for coal seam gas.

Lakes Oil chairman Rob Annells said the fracking would be done "way below the fresh water aquifer" and that the company had done it before.

"The site is land we own ourselves; we bought a number of farms and this is one of them," Mr Annells said.

Mr Annells said the fracking fluid was "about 99 per cent fresh water" but admitted the solution contained acetic acid, potassium chloride and surfactants - compounds that reduce the surface tension of water.

Management at nearby Covino Farms - one of the eastern seaboard's biggest producers of carrots and broccoli - declined to comment.

But the company's website said its property had been "chosen for its reliable and secure source of artesian water".

The Department of Primary Industries said it had not yet received an application for the operation.

Lock the Gate president Drew Hutton said there was "no way to fix" a contaminated aquifer.