Abstract
This study aimed to identify the potential allelopathic indigenous rice ( Oryza sativa L. ssp. indica ) varieties from Bangladesh using a performance study in a weed‐infested field and to assess the extent of allelopathic interference relative to resource competition in a glasshouse experiment. Six varieties – namely, “Boterswar,” “Goria,” “Biron” and “Kartiksail” as the most allelopathic, “Hashikolmi” as weakly allelopathic and “Holoi” as nonallelopathic – were raised following a nonweed control method. The infestation levels of weed species were calculated using Simpson's Diversity Index (SDI), which ranged from 0.2 to 0.56. However, a significant correlation coefficient (0.87, P < 0.001) was obtained from these field data compared with the root inhibition percentage from the laboratory bioassay, and the “Boterswar” variety was the most allelopathic. The interactions between the allelopathic variety “Boterswar,” weakly allelopathic variety “Hashikolmi” and Echinochloa oryzicola via a target (rice)‐adjacent ( E. oryzicola ) cogrowth culture were determined in a hydroponic arrangement. The relative competitive intensity (RCI) and the relative neighbor effect (RNE) values showed that the crop–weed interaction was facilitation for “Boterswar” and competition for “Hashikolmi” and E. oryzicola in rice/ E. oryzicola cogrowth cultures. The allelopathic effects of “Boterswar” were much higher than the resource competition in rice/ E. oryzicola cogrowth cultures. The converse was observed for “Hashikolmi.” Moreover, the mineral content of E. oryzicola was severely affected by “Boterswar”/ E. oryzicola cogrowth cultures’ exudate solution. Therefore, the allelopathic potential of “Boterswar” variety might be useful for developing the weed‐suppressing capacity of rice, which will likely have a significant influence on paddy weed control.
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Claims 10
Claim · model-written summary
Weed infestation diversity ranged from 0.2 to 0.56.
- Taxon
- rice
Oryza sativat0 - Outcome
- Simpson's Diversity Indexe0
- Value
- 0.2 to 0.56e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The infestation levels of weed species were calculated using Simpson's Diversity Index (SDI), which ranged from 0.2 to 0.56.”
t0“rice”
Claim · model-written summary
Field weed infestation correlated significantly with laboratory root inhibition.
- Taxon
- riceOryza sativat0
- Outcome
- root inhibition percentagee0
- Value
- 0.87e0
- Setting
- fielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant correlation coefficient (0.87, P < 0.001) was obtained from these field data compared with the root inhibition percentage from the laboratory bioassay”
t0“rice”
Claim · model-written summary
Boterswar was the most allelopathic variety.
- Taxon
- riceOryza sativat0
- Material
- “Boterswar”e0
- Outcome
- most allelopathice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the “Boterswar” variety was the most allelopathic.”
t0“rice”
Claim · model-written summary
Boterswar facilitated the crop–weed interaction in cogrowth.
- Taxon
- riceOryza sativat0
- Material
- “Boterswar”e0
- Outcome
- facilitatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the crop–weed interaction was facilitation for “Boterswar””
t0“rice”
Claim · model-written summary
Hashikolmi showed competition in rice and E. oryzicola cogrowth.
- Taxon
- riceOryza sativat0
- Material
- “Hashikolmi”e0
- Interactor
- E. oryzicolaEchinochloa oryzicolae0weed
- Outcome
- competitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“competition for “Hashikolmi” and E. oryzicola in rice/ E. oryzicola cogrowth cultures.”
t0“rice”
Claim · model-written summary
E. oryzicola showed competition in rice and weed cogrowth.
- Taxon
- riceOryza sativat0
- Material
- “Hashikolmi”e0
- Interactor
- E. oryzicolaEchinochloa oryzicolae0weed
- Outcome
- competitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“competition for “Hashikolmi” and E. oryzicola in rice/ E. oryzicola cogrowth cultures.”
t0“rice”
Claim · model-written summary
Boterswar allelopathic effects exceeded resource competition.
- Taxon
- riceOryza sativat0
- Material
- “Boterswar”e0
- Interactor
- E. oryzicolaEchinochloa oryzicolae0weed
- Outcome
- allelopathic effectse0
- Direction
- much highere0
- Comparator
- resource competitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The allelopathic effects of “Boterswar” were much higher than the resource competition in rice/ E. oryzicola cogrowth cultures.”
t0“rice”
Claim · model-written summary
Hashikolmi resource competition exceeded its allelopathic effect.
- Taxon
- riceOryza sativat0
- Material
- Hashikolmie0
- Outcome
- conversee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The converse was observed for “Hashikolmi.””
t0“rice”
Claim · model-written summary
Boterswar and E. oryzicola cogrowth exudate severely affected E. oryzicola mineral content.
- Taxon
- riceOryza sativat0
- Material
- “Boterswar”e0
- Treatment
- “Boterswar”/ E. oryzicola cogrowth cultures’ exudate solutione0
- Interactor
- E. oryzicolaEchinochloa oryzicolae0weed
- Outcome
- mineral content of E. oryzicolae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mineral content of E. oryzicola was severely affected by “Boterswar”/ E. oryzicola cogrowth cultures’ exudate solution.”
t0“rice”
Claim · model-written summary
Authors propose Boterswar allelopathy for developing weed suppressing rice and paddy weed control.
- Taxon
- riceOryza sativae0
- Material
- “Boterswar”e0
- Outcome
- developing the weed‐suppressing capacity of ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the allelopathic potential of “Boterswar” variety might be useful for developing the weed‐suppressing capacity of rice, which will likely have a significant influence on paddy weed control.”
The same questions in other papers
allelopathy · nutrient: content · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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