Table 1 Density (plants·m−2) of different weeds as affected by mulching and weed control treatments at 30 DAS
Treatments | Broadleaved Weeds | Grass Weed | Sedge | |||||
|---|---|---|---|---|---|---|---|---|
T. portulacastrum | D. arvensis | E. colona | C. rotundus | |||||
2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | |
Mulching levels | ||||||||
No mulch | 3.92 a | 4.08 a | 3.96 a | 4.01 a | 3.51 a | 3.56 a | 3.97 a | 4.02 a |
Mulching with rice straw 7.5 t·ha−1 | 1.97 b | 2.04 b | 2.02 b | 2.03 b | 1.84 b | 1.86 b | 2.01 b | 2.03 b |
Weed management | ||||||||
Untreated control | 3.78 a | 3.95 a | 3.51 a | 3.55 a | 3.39 a | 3.44 a | 3.39 a | 3.43 a |
Weed free | 1.00 c | 1.00 c | 1.00 c | 1.00 c | 1.00 c | 1.00 c | 1.00 b | 1.00 b |
Pendimethalin (Pre) (in a.i.) 1.5 kg·ha−1 fb two hoeing at 45 & 90 DAS | 2.99 b | 3.05 b | 3.19 b | 3.39 ab | 2.51 b | 2.54 b | 3.24 a | 3.28 a |
Two hoeings at 30 & 60 DAS fb quizalofop-p-ethyl 62.5 g·ha−1 at 90 DAS | 3.55 a | 3.70 a | 3.35 ab | 3.23 b | 3.50 a | 3.56 a | 3.28 a | 3.32 a |
Two hoeings at 30 & 60 DAS fb propaquizafop 50 g·ha−1 at 90 DAS | 3.56 a | 3.72 a | 3.27 ab | 3.42 ab | 3.37 a | 3.43 a | 3.31 a | 3.35 a |
Pendimethalin (Pre) 1.5 kg·ha−1 fb one hoeing at 45 DAS fb paraquat 1 kg·ha−1 (Shielded spray) at 90 DAS | 2.89 b | 3.01 b | 3.37 ab | 3.31 ab | 2.36 b | 2.40 b | 3.37 a | 3.40 a |
Pendimethalin (Pre) 1.5 kg·ha−1 fb one hoeing at 45 DAS fb glyphosate 2 kg·ha−1 (Shielded spray) at 90 DAS | 2.88 b | 3.01 b | 3.22 b | 3.26 b | 2.58 b | 2.62 b | 3.34 a | 3.38 a |