Variety traits

Maize Maturity Group

Zea mays L. subsp. Mays

The maize maturity group is determined by the FAO index — a numerical value ranging from 100 to 999 that reflects a hybrid's heat requirement and growing season length. This indicator allows for the selection of a hybrid suited to a region's climatic conditions to achieve optimal grain moisture con…

In the reference 10 varieties crop Corn, where this is mentioned in the description.

The FAO index is calculated by comparing a hybrid with standard references and takes into account the sum of active temperatures required for the crop to reach full maturity. A difference of 10 FAO units under comparable conditions is equivalent to a 1–2 day difference in maturity or a 1–2% difference in grain moisture at harvest.

The selection of a maturity group is a tool for managing yield potential and economic costs. Late-maturing hybrids have a higher productivity potential but require a long warm period. When cultivating for grain, it is critical that the FAO index corresponds to the regional climate; otherwise, high grain moisture at harvest will necessitate significant energy expenditure for drying.

For silage crops, it is recommended to choose hybrids with a growing period 5–10 days longer than those used for grain crops in the same zone. This allows the plant to accumulate maximum vegetative biomass while maintaining the target developmental stage.

General information about the subject — on the page Maturity group.

Sources8

Varieties of Corn mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.