Table 3 Density (No.m−2) of grassy weeds in Direct Seeded Rice in relation to changing sowing time and weed managing approaches (2 year pooled data).
Treatments | 30 DAS | 45 DAS | 60 DAS | At harvest |
|---|---|---|---|---|
Sowing date | ||||
D1: May 10th | 2.15 (4.25) | 2.69 (7.32) | 2.98 (9.34) | 2.74 (7.60) |
D2: June 3rd | 2.53 (6.17) | 3.03 (9.42) | 3.30 (11.51) | 3.09 (9.79) |
SE(m) ± | 0.06 | 0.05 | 0.006 | 0.03 |
CD (p ≤ 0.05) | 0.19 | 0.16 | 0.019 | 0.09 |
Weed managing approach | ||||
W1: weedy check | 3.72 (12.91) | 4.50 (19.30) | 5.11 (25.22) | 4.54 (19.72) |
W2: four conoweedings (equivalent to weed free) | 1.00 (0.00) | 1.00 (0.00) | 1.00 (0.00) | 1.00 (0.00) |
W3: BSM + pretilachlor, PE | 2.45 (5.09) | 2.94 (7.74) | 3.17 (9.19) | 3.00 (8.10) |
W4: oxyfluorfen, PE | 2.52 (5.46) | 3.45 (11.00) | 3.60 (12.03) | 3.50 (11.35) |
W5: bensulfuron methyl + pretilachlor (PE) fb 2, 4-D (PoE) | 2.17 (3.84) | 2.47 (5.21) | 2.86 (7.29) | 2.57 (5.72) |
W6: oxyfluorfen (PE) fb 2, 4-D (PoE) | 2.20 (3.97) | 2.80 (6.96) | 3.11 (8.82) | 2.87 (7.31) |
SE(m) ± | 0.07 | 0.07 | 0.08 | 0.06 |
CD (p ≤ 0.05) | 0.20 | 0.23 | 0.25 | 0.20 |
