Variety traits

Vegetation period of maize

Zea mays L.

The vegetation period of maize is characterized by the FAO index, which links a hybrid to its requirement for the sum of effective temperatures above +10°C to achieve physiological grain maturity.

In the reference 386 varieties crop Maize, where this is mentioned in the description.

In maize agronomy, the duration of the vegetation period is determined not by calendar days, but by the FAO index — a relative measure of earliness. It reflects the plant's requirement for a sum of active or effective temperatures to complete its developmental cycle, which ends with the appearance of the 'black layer' at the base of the grain.

Hybrids are classified on the FAO scale from 100 to 600+, with each group corresponding to specific ranges of temperature sums and estimated maturity times. Choosing a hybrid with an appropriate index is critical for climate adaptation, as the high heat requirement of late-maturing varieties directly affects their yield, grain moisture loss rate, and the risk of failure to reach maturity before the onset of cold weather.

General information about the subject — on the page Vegetation period.

Sources8

Varieties of Maize 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.

DN Meotyda

Active

Zea mays L. · Maize

Ol`khovyk Maksym Styanislavovych, Riabchenko Eduard Mykolaiovych, Bondar Tetiana Mykolaivna, Plotka Vitalii Vitaliiovych, Nehoda Tetiana Volodymyrovych, Haidash Oleksandr Leonidovych, Olizko Oleksii Petrovych, Fedko Mykola Mykolaiovych, Cherchel Vladyslav

3 records

DN Adzhamka

Active

Zea mays L. · Maize

Kyrpa Mykola IAkovych, Halechko Ivan Dmytrovych, Husak IUliia Viktorivna, Bondar` Tetiana Mykolaivna, Kupar Ivan Mykhailovych, Bodenko Natalia Anatoliivna, Il`chenko Larisa Anatoliivna, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`

3 records

P18610

Active

Zea mays L. · Maize

PIONEER HI-BRED INT. INC, PIONEER OVERSEAS CORPORATION,

3 records

/Ostrech SV/

Terminated

Zea mays L. · Maize

Savchuk Liudmyla Fedorivna, Matseiko Ivan Ivanovych, Hopchak Tetiana Mykolaivna, Sen Oleksandr Vitaliiovych, Dudka Oleksandr Stepanovych, Dieter Stelling, Perevertun Larysa Ivanivna, Hodz` Mykola Vasyl`ovych, Zaika Stanislav Polikarpovych,

2 records