Abstract
Field experiments were conducted to find out the effect of integrated weed management practices on growth and yield of direct seeded rice in Cauvery delta zone. Twelve weed control treatments were tested in randomised block design replicated thrice. The treatments consisted of post-emergence application of metamifop (75, 100, 125 g/ha), pre emergence application of pretilachlor + safener 0.45 kg/ha alone and their combination with one hand weeding at 45 DAS. In addition, post-emergence metamifop 200 g/ha and cyhalofop-butyl 100 g/ha alone was also tested along with two hand weeding at 25 and 45 DAS and unweeded control. The results revealed that two hand weeding was found to be better in terms of weed control and grain yield of rice over other weed management practices. Among the herbicides, the preemergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DAS was effective in controlling all weeds and registered higher yield attributes and yield in wet-seeded rice which was at par with two hand weeding. Greater reduction in grass weed population was observed with postemergence application of metamifop 100 and 125 g/ha as compared to other herbicides. Pre-emergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DAS was found to be ideal weed management practice for improving the rice grain yield by eliminating crop-weed competition in wet-seeded rice.
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Claims 7
Claim · model-written summary
Two hand weedings gave better weed control than other management practices.
- Taxon
- rice
Oryza sativae0 - Treatment
- two hand weedinge0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- bettere0
- Comparator
- other weed management practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two hand weeding was found to be better in terms of weed control and grain yield of rice over other weed management practices”
Claim · model-written summary
Two hand weedings gave better rice grain yield than other management practices.
- Taxon
- riceOryza sativae0
- Treatment
- two hand weedinge0
- Outcome
- grain yield of ricee0
- Direction
- bettere0
- Comparator
- other weed management practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two hand weeding was found to be better in terms of weed control and grain yield of rice over other weed management practices”
Claim · model-written summary
Pretilachlor plus safener followed by one hand weeding controlled all weeds.
- Taxon
- riceOryza sativat0
- Treatment
- preemergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DASe0
- Interactor
- weedse0weed
- Outcome
- controlling all weedse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the preemergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DAS was effective in controlling all weeds”
t0“rice”
Claim · model-written summary
Pretilachlor plus safener followed by hand weeding improved yield attributes and yield, comparable with two hand weedings.
- Taxon
- riceOryza sativae0
- Treatment
- preemergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DASe0
- Outcome
- yield attributes and yielde0
- Direction
- highere0
- Comparator
- two hand weedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preemergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DAS was effective in controlling all weeds and registered higher yield attributes and yield in wet-seeded rice which was at par with two hand weeding”
Claim · model-written summary
Metamifop at 100 g/ha reduced grass weed populations more than other herbicides.
- Taxon
- riceOryza sativat0
- Treatment
- metamifop 100e0
- Interactor
- grass weede0weed
- Outcome
- grass weed populatione0
- Direction
- Greater reductione0
- Comparator
- other herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greater reduction in grass weed population was observed with postemergence application of metamifop 100 and 125 g/ha as compared to other herbicides”
t0“rice”
Claim · model-written summary
Metamifop at 125 g/ha reduced grass weed populations more than other herbicides.
- Taxon
- riceOryza sativat0
- Treatment
- metamifop 100 and 125 g/hae0
- Interactor
- grass weede0weed
- Outcome
- grass weed populatione0
- Direction
- Greater reductione0
- Comparator
- other herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greater reduction in grass weed population was observed with postemergence application of metamifop 100 and 125 g/ha as compared to other herbicides”
t0“rice”
Claim · model-written summary
The authors recommend pretilachlor plus safener followed by hand weeding for wet-seeded rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DASe0
- Interactor
- weede0weed
- Outcome
- ideal weed management practice for improving the rice grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pre-emergence application of pretilachlor + safener 0.45 kg/ha followed by one hand weeding at 45 DAS was found to be ideal weed management practice for improving the rice grain yield by eliminating crop-weed competition in wet-seeded rice”
The same questions in other papers
Pretilachlor · yield · Oryza sativa (rice)Results differ
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- negative
- negative
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See all 141 papers →Pretilachlor · weed · Oryza sativa (rice)Results differ
146 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
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See all 150 papers →metamifop · weed · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- positive
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herbicide · weed · Oryza sativa (rice)Positive and negative results
578 papers in the same direction as this paper · 17 in the opposite direction · 7 reporting no difference from an alternative
- positive
- positive
- positive
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See all 603 papers →herbicide · yield · Oryza sativa (rice)Positive and negative results
724 papers in the same direction as this paper · 57 in the opposite direction · 20 reporting no difference from an alternative
- positive
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See all 802 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.