Table 5 Density (No.m⁻²) of sedges in direct seeded rice in relation to changing sowing time and weed managing approaches (2 year pooled data).

Sowing date

 D₁: May 10th

2.01 (3.54)

2.50 (6.10)

2.76 (7.78)

2.54 (6.34)

 D₂: June 3rd

2.36 (5.14)

2.80 (7.85)

3.05 (9.59)

2.85 (8.16)

SE(m) ± 

0.05

0.04

0.005

0.02

CD (p ≤ 0.05)

0.17

0.14

0.017

0.08

Weed managing practices

 W₁: weedy check

3.42 (10.76)

4.13 (16.08)

4.69 (21.02)

4.17 (16.44)

 W₂: four conoweedings (equivalent to weed free)

1.00 (0.00)

1.00 (0.00)

1.00 (0.00)

1.00 (0.00)

 W₃: bensulfuron methyl + pretilachlor (PE)

2.27 (4.24)

2.71 (6.45)

2.92 (7.66)

2.77 (6.75)

 W₄: oxyfluorfen (PE)

2.34 (4.55)

3.22 (9.46)

3.31 (7.66)

3.18 (9.16)

 W₅: bensulfuron methyl + pretilachlor (PE) fb 2, 4-D (PoE)

2.03 (3.20)

2.29 (4.34)

2.64 (6.08)

2.39 (4.77)

 W₆: oxyfluorfen (PE) fb 2, 4-D (PoE)

2.05 (3.30)

2.59 (5.80)

2.87 (7.35)

2.65 (6.09)

SE(m) ± 

0.06

0.07

0.07

0.06

CD (p ≤ 0.05)

0.18

0.20

0.22

0.18