Abstract
An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from December 2016 to May 2017 to investigate the effect of weeding regime on the performance of boro rice cultivars. The experiment comprised of two factors, Factor A- Rice cultivars: BRRI dhan28, BRRI dhan29, and BRRI dhan74, Factor B: Methods of weeding- no weeding, two hand weedings at 15 and 35 DATs, application of pre-emergence herbicide Commit, application of early post-emergence herbicide Pediplus, application of pre-emergence herbicide Commit followed by application of early post-emergence herbicide Pediplus, application of pre-emergence herbicide Commit followed by one hand weeding at 35 DAT, and application of early post-emergence herbicide Pediplus followed by one hand weeding at 35 DAT. The experiment was laid out in a split plot design assigning rice cultivars in the main plots and weed management practices in the sub-plots with three replications. Fourteen weed species infested the experimental field belonging to six families. Among the weed species, four were grasses, four were broad leaves and six were sedges. Cultivar exerted significant effect on weed density and dry weight. Both the highest weed density and dry weight were found in BRRI dhan28 and the lowest ones were observed in BRRI dhan29 rice cultivar. Weed density and weed dry weight were significantly influenced by weeding regime. The highest weed density and dry weight were observed in no weeding condition and application of pre-emergence herbicide Commit followed by one hand weeding at 35 DAT showed the best performance. BRRI dhan29 produced the highest grain and straw yields among the cultivars. Weed control had pronounced influence on yield of rice. The highest grain yield was obtained in application of pre-emergence herbicide Pretilachlor (Commit)followed by one hand weeding at 35 DAT and the lowest one was obtained in control (no weeding) treatment. From the results of the study it may be concluded that rice cultivar BRRI dhan29 with application of pre-emergence herbicide Commit followed by one hand weeding at 35 DAT might be the best treatment for controlling weed effectively as well as obtaining highest yield and highest economic return. J Bangladesh Agril Univ 17(3): 265–273, 2019
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Claims 11
Claim · model-written summary
Cultivar had a significant effect on weed density and dry weight in boro rice.
- Taxon
- rice
Oryza sativae0 - Material
- boro rice cultivarse0
- Interactor
- weed speciese3weed
- Outcome
- weed density and dry weighte1
- Setting
- Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensinghe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from December 2016 to May 2017 to investigate the effect of weeding regime on the performance of boro rice cultivars”
e1“Cultivar exerted significant effect on weed density and dry weight”
e3“Fourteen weed species infested the experimental field”
Claim · model-written summary
BRRI dhan28 had the highest weed density and dry weight among the cultivars.
- Taxon
- riceOryza sativae2
- Material
- BRRI dhan28e2
- Outcome
- weed density and dry weighte2
- Direction
- higheste2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both the highest weed density and dry weight were found in BRRI dhan28 and the lowest ones were observed in BRRI dhan29 rice cultivar”
Claim · model-written summary
BRRI dhan29 had the lowest weed density and dry weight among the cultivars.
- Taxon
- riceOryza sativae2
- Material
- BRRI dhan29e2
- Outcome
- weed density and dry weighte2
- Direction
- loweste2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both the highest weed density and dry weight were found in BRRI dhan28 and the lowest ones were observed in BRRI dhan29 rice cultivar”
Claim · model-written summary
Weeding regime significantly influenced weed density and weed dry weight in boro rice.
- Taxon
- riceOryza sativae0
- Treatment
- weeding regimee4
- Interactor
- weed speciese3weed
- Outcome
- weed density and weed dry weighte4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to investigate the effect of weeding regime on the performance of boro rice cultivars”
e4“Weed density and weed dry weight were significantly influenced by weeding regime”
e3“Fourteen weed species infested the experimental field”
Claim · model-written summary
The highest weed density and dry weight were observed in the no weeding condition.
- Taxon
- riceOryza sativae0
- Treatment
- no weeding conditione5
- Interactor
- weed speciese3weed
- Outcome
- weed density and dry weighte5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to investigate the effect of weeding regime on the performance of boro rice cultivars”
e5“The highest weed density and dry weight were observed in no weeding condition”
e3“Fourteen weed species infested the experimental field”
Claim · model-written summary
Pre-emergence herbicide Commit followed by one hand weeding at 35 DAT showed the best performance in boro rice.
- Taxon
- riceOryza sativae0
- Treatment
- application of pre-emergence herbicide Commit followed by one hand weeding at 35 DATe6
- Outcome
- performancee6
- Direction
- beste6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to investigate the effect of weeding regime on the performance of boro rice cultivars”
e6“application of pre-emergence herbicide Commit followed by one hand weeding at 35 DAT showed the best performance”
Claim · model-written summary
BRRI dhan29 produced the highest grain and straw yields among the cultivars.
- Taxon
- riceOryza sativae0
- Material
- BRRI dhan29e7
- Outcome
- grain and straw yieldse7
- Direction
- higheste7
- Comparator
- the cultivarse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to investigate the effect of weeding regime on the performance of boro rice cultivars”
e7“BRRI dhan29 produced the highest grain and straw yields among the cultivars”
Claim · model-written summary
Weed control had a pronounced influence on rice yield.
- Taxon
- riceOryza sativae1
- Treatment
- Weed controle1
- Outcome
- yielde1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Weed control had pronounced influence on yield of rice”
Claim · model-written summary
The highest grain yield was obtained with pre-emergence herbicide Pretilachlor (Commit) followed by one hand weeding at 35 DAT.
- Taxon
- riceOryza sativae0
- Treatment
- application of pre-emergence herbicide Pretilachlor (Commit)followed by one hand weeding at 35 DATe7
- Outcome
- grain yielde7
- Direction
- higheste7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to investigate the effect of weeding regime on the performance of boro rice cultivars”
e7“The highest grain yield was obtained in application of pre-emergence herbicide Pretilachlor (Commit)followed by one hand weeding at 35 DAT and the lowest one was obtained in control (no weeding) treatment”
Claim · model-written summary
The lowest grain yield was obtained in the control (no weeding) treatment.
- Taxon
- riceOryza sativae0
- Treatment
- control (no weeding) treatmente7
- Outcome
- grain yielde7
- Direction
- loweste7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to investigate the effect of weeding regime on the performance of boro rice cultivars”
e7“The highest grain yield was obtained in application of pre-emergence herbicide Pretilachlor (Commit)followed by one hand weeding at 35 DAT and the lowest one was obtained in control (no weeding) treatment”
Claim · model-written summary
Rice cultivar BRRI dhan29 with pre-emergence herbicide Commit followed by one hand weeding at 35 DAT might be the best treatment for controlling weeds and obtaining the highest yield and economic return.
- Taxon
- riceOryza sativae1
- Material
- BRRI dhan29e1
- Treatment
- application of pre-emergence herbicide Commit followed by one hand weeding at 35 DATe1
- Outcome
- controlling weed effectivelye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rice cultivar BRRI dhan29 with application of pre-emergence herbicide Commit followed by one hand weeding at 35 DAT might be the best treatment for controlling weed effectively”
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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.