Abstract
Field experiment was conducted at Tamil Nadu Rice Research Institute, Aduthurai during Kuruvai season 2013 to evaluate the weed management practices in direct wet seeded rice. The weed management practices were : Pre-emergence (PE) pretilachlor + safener at 0.45 kg/ha on 3 DAS fb Early post-emergence (EPOE) metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DAS, PE pretilachlor + safener at 0.45 kg/ha on 3 DAS fb EPOE bispyribac-sodium at 25 g/ha on 25 DAS, PE pretilachlor + safener at 0.45 kg/ha fb cono weeder weeding on 25 DAS, PE pretilachlor + safener at 0.45 kg/ha fb drum type weeder weeding on 25 DAS compared with recommended practice of PE pretilachlor + safener at 0.45 kg ha-1 fb hand weeding on 40 DAS, hand weeding on 20 and 45 DAS and unweeded control. The results revealed that the lowest total weed density, total weed dry weight and higher weed control efficency, yield parameters and yield of rice were recorded in hand weeding on 20 and 45 DAS and it was followed by PE pretilachlor + safener at 0.45 kg/ha fb hand weeding on 40 DAS and PE pretilachlor + safener at 0.45 kg/ha fb EPOE metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DAS. However, the net returns and BC ratio were higher in PE pretilachlor + safener at 0.45 kg/ha fb EPOE metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DAS.
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Claims 5
Claim · model-written summary
Hand weeding on 20 and 45 DAS produced the lowest weed density and dry weight and highest weed control efficiency.
- Taxon
- rice
Oryza sativat0 - Treatment
- hand weeding on 20 and 45 DASe0
- Interactor
- weede0weed
- Outcome
- total weed density, total weed dry weight and higher weed control efficencye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest total weed density, total weed dry weight and higher weed control efficency, yield parameters and yield of rice were recorded in hand weeding on 20 and 45 DAS”
t0“rice”
Claim · model-written summary
Hand weeding on 20 and 45 DAS produced higher rice yield parameters and yield.
- Taxon
- riceOryza sativat0
- Treatment
- hand weeding on 20 and 45 DASe0
- Outcome
- yield parameters and yield of ricee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher weed control efficency, yield parameters and yield of rice were recorded in hand weeding on 20 and 45 DAS”
t0“rice”
Claim · model-written summary
Pretilachlor followed by hand weeding ranked next for weed control and rice yield.
- Taxon
- riceOryza sativat0
- Treatment
- PE pretilachlor + safener at 0.45 kg/ha fb hand weeding on 40 DASe0
- Outcome
- it was followed bye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was followed by PE pretilachlor + safener at 0.45 kg/ha fb hand weeding on 40 DAS”
t0“rice”
Claim · model-written summary
Pretilachlor followed by metsulfuron methyl plus chlorimuron ethyl ranked after the hand-weeding regimes.
- Taxon
- riceOryza sativat0
- Outcome
- PE pretilachlor + safener at 0.45 kg/ha fb EPOE metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and PE pretilachlor + safener at 0.45 kg/ha fb EPOE metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DAS”
t0“rice”
Claim · model-written summary
Pretilachlor followed by metsulfuron methyl plus chlorimuron ethyl gave higher net returns and BC ratio.
- Taxon
- riceOryza sativat0
- Treatment
- PE pretilachlor + safener at 0.45 kg/ha fb EPOE metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DASe0
- Outcome
- net returns and BC ratioe0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“net returns and BC ratio were higher in PE pretilachlor + safener at 0.45 kg/ha fb EPOE metsulfuron methyl + chlorimuron ethyl at 4 g/ha on 25 DAS”
t0“rice”
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