Maturity group — Asian pear

Determining the maturity group of Pyrus pyrifolia is based on the fruit reaching full maturity on the tree. The primary indicators of readiness are changes in skin color, lenticel darkening, and the ease of pedicel detachment. In breeding practice, the number of days from full bloom is used to refine timing, which varies from 112 to 150 days depending on the cultivar.

Instrumental maturity assessment is performed using penetrometers with an 8 mm plunger, where optimal pressure values are considered to be 3.5–4.5 kg. Agronomic strategy depends on the maturity group: early harvest critically reduces taste quality, while late-maturing cultivars require precise timing of harvest to ensure storage life of up to 5 months under cold storage conditions.

The maturity group determines a cultivar's requirements for the sum of active temperatures. In regions with a short growing season, the choice of late-maturing cultivars is limited, as the fruit requires time to accumulate sugars and pectin substances, although biologically they are capable of withstanding short-term autumn frosts down to –5 °C while on the tree.