Abstract
The experiment was conducted during Kharif (rainy) season of 2019 to assess comparative efficacy of low dose high efficiency herbicides in providing season-long weed control in direct wet-seeded rainfed lowland rice at Integrated Farming System Research Station (IFSRS), Karamana, Kerala. The rice yield reduction due to unmanaged weeds in unweeded control in rainfed lowland rice was estimated to be 59.75%. Rice grain yield obtained was 159.9% higher in bensulfuron-methyl + pretilachlor fb HW at 40 DAS (5.46 t/ha) compared to weedy check with a B: C ratio of 1.83 and was at par with penoxsulam + cyhalofop-butyl fb HW at 40 DAS (5.35 t/ha) with a B:C ratio of 1.77. Application of ready mix of either bensulfuron-methyl + pretilachlor 60 + 600 g/ha at 3 DAS or penoxsulam + cyhalofop-butyl 150 g/ha at 20 DAS both fb HW at 40 DAS was observed as the most effective weed management strategy in wet-seeded lowland rainfed rice.
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Claims 6
Claim · model-written summary
Unmanaged weeds reduced rice yield by an estimated 59.75% relative to the unweeded control.
- Taxon
- rice
Oryza sativae1 - Treatment
- unmanaged weedse1
- Interactor
- weedse1weed
- Outcome
- rice yielde1
- Direction
- reductione1
- Value
- 59.75%e1
- Comparator
- unweeded controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The rice yield reduction due to unmanaged weeds in unweeded control in rainfed lowland rice was estimated to be 59.75%”
Claim · model-written summary
Grain yield with bensulfuron-methyl + pretilachlor followed by hand weeding at 40 DAS was 159.9% higher than in the weedy check.
- Taxon
- riceOryza sativae2
- Treatment
- bensulfuron-methyl + pretilachlor fb HW at 40 DASe2
- Outcome
- grain yielde2
- Direction
- highere2
- Value
- 159.9%e2
- Qualifier
- 5.46 t/hae2
- Comparator
- weedy checke2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Rice grain yield obtained was 159.9% higher in bensulfuron-methyl + pretilachlor fb HW at 40 DAS (5.46 t/ha) compared to weedy check with a B: C ratio of 1.83 and was at par with penoxsulam + cyhalofop-butyl fb HW at 40 DAS (5.35 t/ha) with a B:C ratio of 1.77”
Claim · model-written summary
Bensulfuron-methyl + pretilachlor followed by hand weeding at 40 DAS gave a B:C ratio of 1.83.
- Taxon
- riceOryza sativae2
- Treatment
- bensulfuron-methyl + pretilachlor fb HW at 40 DASe2
- Outcome
- B: C ratioe2
- Value
- 1.83e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Rice grain yield obtained was 159.9% higher in bensulfuron-methyl + pretilachlor fb HW at 40 DAS (5.46 t/ha) compared to weedy check with a B: C ratio of 1.83 and was at par with penoxsulam + cyhalofop-butyl fb HW at 40 DAS (5.35 t/ha) with a B:C ratio of 1.77”
Claim · model-written summary
Grain yield with penoxsulam + cyhalofop-butyl followed by hand weeding at 40 DAS was at par with bensulfuron-methyl + pretilachlor.
- Taxon
- riceOryza sativae2
- Treatment
- penoxsulam + cyhalofop-butyl fb HW at 40 DASe2
- Outcome
- grain yielde2
- Direction
- no_changeinferrede2
- Qualifier
- 5.35 t/hae2
- Comparator
- bensulfuron-methyl + pretilachlor fb HW at 40 DASe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Rice grain yield obtained was 159.9% higher in bensulfuron-methyl + pretilachlor fb HW at 40 DAS (5.46 t/ha) compared to weedy check with a B: C ratio of 1.83 and was at par with penoxsulam + cyhalofop-butyl fb HW at 40 DAS (5.35 t/ha) with a B:C ratio of 1.77”
Claim · model-written summary
Penoxsulam + cyhalofop-butyl followed by hand weeding at 40 DAS gave a B:C ratio of 1.77.
- Taxon
- riceOryza sativae2
- Treatment
- penoxsulam + cyhalofop-butyl fb HW at 40 DASe2
- Outcome
- B:C ratioe2
- Value
- 1.77e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Rice grain yield obtained was 159.9% higher in bensulfuron-methyl + pretilachlor fb HW at 40 DAS (5.46 t/ha) compared to weedy check with a B: C ratio of 1.83 and was at par with penoxsulam + cyhalofop-butyl fb HW at 40 DAS (5.35 t/ha) with a B:C ratio of 1.77”
Claim · model-written summary
Ready-mix applications of either bensulfuron-methyl + pretilachlor or penoxsulam + cyhalofop-butyl, each followed by hand weeding at 40 DAS, were the most effective weed management strategy.
- Taxon
- riceOryza sativae3
- Treatment
- ready mix of either bensulfuron-methyl + pretilachlor 60 + 600 g/ha at 3 DAS or penoxsulam + cyhalofop-butyl 150 g/ha at 20 DAS both fb HW at 40 DASe3
- Outcome
- most effective weed management strategye3
- Direction
- most effectivee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Application of ready mix of either bensulfuron-methyl + pretilachlor 60 + 600 g/ha at 3 DAS or penoxsulam + cyhalofop-butyl 150 g/ha at 20 DAS both fb HW at 40 DAS was observed as the most effective weed management strategy in wet-seeded lowland rainfed rice”
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See all 37 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.