Source of variation

Degree of freedom

Cob length (cm)

Cob width (mm)

Grain yield, (kg·ha⁻¹)

Stalk yield (kg·ha⁻¹)

100 seed weight (g)

Harvest Index (HI)

Replication

3

3.36

22.11

232,741

250,340

11.907

0.001

Treatment

4

45.27***

443.17***

16,753,927***

6,696,196***

33.992***

0.029***

Year

1

1.41NS

11.04NS

8,087,492***

67,648NS

1.296NS

0.034***

Treatment × Year

4

7.57*

91.26**

1,418,083***

4,395,139***

11.436NS

0.007*

Residual

27

2.09

20.36

230,498

321,410

5.044

0.002