THE Australian Table Grape Association (ATGA) says it is too early to tell whether the deadly coronavirus will affect Sunraysia's burgeoning export market to China.

The Sunraysia table grape growing region produces an estimated 80 per cent of Australia's total production, but with this year's harvest yet to get under way, ATGA boss Jeff Scott said on Tuesday a clearer picture of the impact on growers would be known in coming weeks.