Source of variation

Df

Weed density (m⁻²)

Fresh weight of weeds (m⁻²)

Dry weight of weeds (m⁻²)

Number of grain head⁻¹

1000-grain weight (g)

Grain yield (kg・ha⁻¹)

Replication (r)

2

18.7

572

36.5

79

0.07

437

Sowing Date (SD)

2

1416.0

6259

252.3

507,377**

1.66

497,272**

Error a

4

117.3

614

23.2

1324

0.24

1027

Weed Control (W)

3

68,855.1**

583,760**

23,196.4**

2,036,328**

6.79**

1,268,685**

SD × W

6

82.2

421

21.3

6696**

0.08

14,246**

Error b

18

138.6

353

14.2

463

0.11

1050

Total

35