GDD

Date

Phenology stage

Boj

Shi

Boj

Shi

196.8

320.5

Nov

Dec

Emergence

580.5

515.2

Feb

Mar

Tillering

882

932.5

Mar

Apr

Stem extension

1485.1

1388.8

May

May

Anthesis

2277.8

2071.5

Jun

Jun

Maturity