Abstract
Abstract A field experiment was conducted to evaluate the effect of planting methods and weed management in direct dry-seeded rice during summer season of 2017 and 2018 at Experimental Farm, Annamalai University. The treatment comprised of five rice planting treatments, viz . conventional tillage normal spacing [row to row (R × R) -18 cm], conventional tillage square planting (R×R-20 cm, plant to plant (P × P)-20 cm), conventional tillage paired row (9-27-9 cm), reduced tillage paired row (9-27-9 cm), reduced tillage square planting (R × R -20 cm, P×P-20 cm) in main plot and sub-plot consisted of four weed management treatments, viz . weedy, two hand weeding, pendimethalin 1.0 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25 g/ha (tank mixed) at 15 DAS fb one hand weeding (HW), oxadiargyl 50 g/ha fb metsulfuron-methyl 2 g/ha + chlorimuron-ethyl 2 g/ha (ready mix) at 20 DAS fb 1 HW. Significant reduction in weed density and biomass was recorded in two hand weeding fb pendimethalin 1.0 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25 g/ha (tank mixed) at 15 DAS fb 1 HW which resulted in improved growth and yield attributes and yield of rice. Amongst rice planting methods, conventional tillage normal spacing (R × R −18 cm) and conventional tillage paired row (9-27-9 cm) were able to compete with weeds more as compared to other rice planting methods resulting in lower weed density and weed biomass, enhanced rice growth and yield attributing characters and yield.
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Claims 5
Claim · model-written summary
Two hand weedings followed by the stated herbicide sequence reduced weed density and biomass.
- Taxon
- rice
Oryza sativat0 - Treatment
- two hand weeding fb pendimethalin 1.0 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25 g/ha (tank mixed) at 15 DAS fb 1 HWe0
- Outcome
- weed density and biomasse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant reduction in weed density and biomass was recorded in two hand weeding fb pendimethalin 1.0 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25 g/ha (tank mixed) at 15 DAS fb 1 HW”
t0“dry seeded rice”
Claim · model-written summary
That weed-management sequence improved rice growth, yield attributes and yield.
- Taxon
- riceOryza sativae0
- Treatment
- two hand weedinge0
- Outcome
- growth and yield attributes and yield of ricee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two hand weeding fb pendimethalin 1.0 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25 g/ha (tank mixed) at 15 DAS fb 1 HW which resulted in improved growth and yield attributes and yield of rice.”
Claim · model-written summary
Conventional tillage with normal spacing gave lower weed density and biomass than other planting methods.
- Taxon
- riceOryza sativat0
- Treatment
- conventional tillage normal spacing (R × R −18 cm)e0
- Outcome
- weed density and weed biomasse0
- Direction
- lowere0
- Comparator
- other rice planting methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conventional tillage normal spacing (R × R −18 cm) and conventional tillage paired row (9-27-9 cm) were able to compete with weeds more as compared to other rice planting methods resulting in lower weed density and weed biomass”
t0“dry seeded rice”
Claim · model-written summary
Conventional tillage paired rows gave lower weed density and biomass than other planting methods.
- Taxon
- riceOryza sativat0
- Treatment
- conventional tillage paired row (9-27-9 cm)e0
- Outcome
- weed density and weed biomasse0
- Direction
- lowere0
- Comparator
- other rice planting methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conventional tillage normal spacing (R × R −18 cm) and conventional tillage paired row (9-27-9 cm) were able to compete with weeds more as compared to other rice planting methods resulting in lower weed density and weed biomass”
t0“dry seeded rice”
Claim · model-written summary
Those conventional planting methods enhanced rice growth, yield attributes and yield.
- Taxon
- riceOryza sativae0
- Treatment
- conventional tillagee0
- Outcome
- rice growth and yield attributing characters and yielde0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conventional tillage normal spacing (R × R −18 cm) and conventional tillage paired row (9-27-9 cm) were able to compete with weeds more as compared to other rice planting methods resulting in lower weed density and weed biomass, enhanced rice growth and yield attributing characters and yield.”
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