Table grape maturity testing procedures

The ATGA implemented national minimum maturity standards for table grapes in 2019 following significant consultation with industry, retailers and consultants.

The new standards were designed to achieve a minimum of 80 per cent consumer acceptability at retail. Brix is the preferred maturity measure to meet the new minimum maturity standards:

Crimson, Flame, Red Globe and Thompson≥ 80% of fruit in a representative sample have Brix ≥ 16°
Menindee / Sugraone / Superior≥ 80% of fruit in a representative sample have Brix ≥ 15.5°

The ATGA has developed procedures for growers to conduct on-farm maturity testing pre- and during harvest to optimise testing and obtain representative samples, as well as guidelines for maturity testing in a distribution centre.