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.

X00C216

Withdrawn

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

1 record

Tytan 220 SV

Terminated

Zea mays L. · Maize

Dibrova Ivan IArofeiovych, Kotliarenko Oleksandr Ivanovych, Khromenko Oleksandr Stepanovych, Prysiazhniuk Ihor Vasyl`ovych, Morhun Volodymyr Vasylovych,

1 record

SY Stylo

Active

Zea mays L. · Maize

Syngenta Crop Protection AG

1 record

Stardi

Active

Zea mays L. · Maize

Melnyk Taras Vitaliiovych, Melnyk Vitalii IAkovych,

2 records

Star Sids S 280

Active

Zea mays L. · Maize

Hordiienko Volodymyr Valeriiovych

2 records

SF6462

Active

Zea mays L. · Maize

Syngenta Crop Protection AG

1 record

RH21032

Active

Zea mays L. · Maize

RAGT 2N S.A.S

1 record

RH16057

Active

Zea mays L. · Maize

RAGT 2N S.A.S

1 record

RGT Pinkxxfloyd

Active

Zea mays L. · Maize

RAGT semences

1 record

PAL`MIRA

Terminated

Zea mays L. · Maize

Borschevs`kyi Oleksandr Volodymyrovych, Slobodian Roman Petrovych, Stupa Leonid IAkovych, Serikov Volodymyr Oleksiiovych, Sokolov V'iacheslav Mykhailovych, Bielousov Anatolii Oleksandrovych,

2 records

NX7034

Terminated

Zea mays L. · Maize

Syngenta Crop Protection AG

1 record

Nertus 271 MV

Active

Zea mays L. · Maize

MYKHNO MYKOLA

2 records

MK 2170

Terminated

Zea mays L. · Maize

Palamarchuk Mykola Mykolaiovych, Bahatchenko Volodymyr Vasyl`ovych, Tsentylo Leonid Vasyl`ovych, Boreiko Vasyl` Sydorovych,

2 records

Motryn 178 SV

Terminated

Zea mays L. · Maize

Tsentylo Leonid Vasyl`ovych, Boreiko Vasyl` Sydorovych,

2 records

MAS 36M

Application submitted

Zea mays L. · Maize

MAS SEEDS

1 record

Marsial

Withdrawn

Zea mays L. · Maize

AMI SRL

1 record

LZM 373/77

Active

Zea mays L. · Maize

LIMAGRAIN EUROPE S.A.

1 record

KSM 2652

Terminated

Zea mays L. · Maize

Pierre GARRAUD

2 records

Kyivskyi 197

Active

Zea mays L. · Maize

Vynohradova Oksana Mykolaivna, Lytus Mykola Volodymyrovych, Blaschuk Mykhailo Ivanovych, Ponomarenko Halyna Ivanivna, Havryliuk Viktor Mykolaiovych, Morhun Volodymyr Vasylovych,

2 records