Coefficients

Ranges

Initial value

Final value

Yield change range (%)

Average yield change (%)

Thermal time grain filling to maturity (P5)

450 - 640

580

640

2 - 9

+5

Relative leaf size (G1)

3 - 22

11

15

0.3 - 1.1

+0.7

Partitioning to panicle (G2)

4.5 - 6.5

6

6.5

7 - 9

+8

Cultivar duration (days)

90 - 150

110

130

0 - 100

+15