Abstract
A field experiment was conducted during kharif 2017 at the Agricultural Farm, Palli Siksha Bhavana, Visva-Bharati, Sriniketan, Birbhum, West Bengal to study the effect of different weed management practices on yield improvement of transplanted kharif rice. Nine treatments viz; pretilachlor 500 g/ha as pre emergence, oxadiargyl 90 g/ha as pre emergence, pyrazosulfuron ethyl 25 g/ha as pre emergence, pretilachlor 500 g/ha as PE followed by hand weeding at 40 DAT, oxadiargyl 90 g/ha as PE followed by hand weeding at 40 DAT, pyrazosulfuron ethyl 25 g/ha as PE followed by hand weeding at 40 DAT, hand weeding twice at 20 and 40 DAT, weed free and unweeded control were tested in randomized complete block design with three replications. The predominant weed flora present in the experimental field was Echinochloa glabrescens, Cyperus difformis, Cyperus iria and Ludwigia parviflora. All weed control treatments significantly reduced the population and dry weight of all categories of weeds viz., grasses, sedges and broadleaf weeds than unweeded control which resulted significant increase in different growth parameters of transplanted kharif rice. Among the herbicide applied treatments, pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DAT resulted in significantly higher values of plant height, leaf area index, dry matter accumulation, crop growth rate and ultimately grain yield (5.22 t/ha) of rice than that of unweeded control. Hand weeding at 20 and 40 DAT was statistically at par with pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DAT.
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Claims 8
Claim · model-written summary
Echinochloa glabrescens, Cyperus difformis, Cyperus iria and Ludwigia parviflora were the predominant field weeds.
- Taxon
- Rice
Oryza sativat0 - Interactor
- Echinochloa glabrescensEchinochloa glabrescense0weed
- Outcome
- predominant weed florae0
- Qualifier
- Cyperus difformis, Cyperus iria and Ludwigia parviflorae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predominant weed flora present in the experimental field was Echinochloa glabrescens, Cyperus difformis, Cyperus iria and Ludwigia parviflora”
t0“Rice”
Claim · model-written summary
All weed control treatments significantly reduced weed population relative to the unweeded control.
- Taxon
- RiceOryza sativat0
- Treatment
- All weed control treatmentse0
- Interactor
- weedse0weed
- Outcome
- populatione0
- Direction
- reducede0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All weed control treatments significantly reduced the population and dry weight of all categories of weeds viz., grasses, sedges and broadleaf weeds than unweeded control”
t0“Rice”
Claim · model-written summary
All weed control treatments significantly reduced weed dry weight relative to the unweeded control.
- Taxon
- RiceOryza sativat0
- Treatment
- All weed control treatmentse0
- Interactor
- weedse0weed
- Outcome
- dry weight of all categories of weedse0
- Direction
- reducede0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All weed control treatments significantly reduced the population and dry weight of all categories of weeds viz., grasses, sedges and broadleaf weeds than unweeded control”
t0“Rice”
Claim · model-written summary
Weed control treatments significantly increased rice growth parameters relative to the unweeded control.
Verbatim
e0“All weed control treatments significantly reduced the population and dry weight of all categories of weeds viz., grasses, sedges and broadleaf weeds than unweeded control which resulted significant increase in different growth parameters of transplanted kharif rice”
Claim · model-written summary
Pyrazosulfuron ethyl followed by hand weeding gave significantly higher rice plant height, leaf area index and dry matter accumulation than the unweeded control.
- Taxon
- riceOryza sativae0
- Treatment
- pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DATe0
- Outcome
- plant height, leaf area index, dry matter accumulatione0
- Direction
- highere0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DAT resulted in significantly higher values of plant height, leaf area index, dry matter accumulation, crop growth rate and ultimately grain yield (5.22 t/ha) of rice than that of unweeded control”
Claim · model-written summary
Pyrazosulfuron ethyl followed by hand weeding gave a significantly higher rice crop growth rate than the unweeded control.
- Taxon
- riceOryza sativae0
- Treatment
- pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DATe0
- Outcome
- crop growth ratee0
- Direction
- highere0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DAT resulted in significantly higher values of plant height, leaf area index, dry matter accumulation, crop growth rate and ultimately grain yield (5.22 t/ha) of rice than that of unweeded control”
Claim · model-written summary
Pyrazosulfuron ethyl followed by hand weeding produced a significantly higher rice grain yield of 5.22 t/ha than the unweeded control.
- Taxon
- riceOryza sativae0
- Treatment
- pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DATe0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 5.22 t/hae0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DAT resulted in significantly higher values of plant height, leaf area index, dry matter accumulation, crop growth rate and ultimately grain yield (5.22 t/ha) of rice than that of unweeded control”
Claim · model-written summary
Twice hand weeding was statistically at par with pyrazosulfuron ethyl followed by one hand weeding.
- Taxon
- RiceOryza sativat0
- Treatment
- Hand weeding at 20 and 40 DATe0
- Outcome
- statistically at pare0
- Direction
- statistically at pare0
- Comparator
- pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hand weeding at 20 and 40 DAT was statistically at par with pyrazosulfuron ethyl 25g/ha fb one hand weeding at 40 DAT”
t0“Rice”
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