Abstract
Summary: In direct‐seeded upland rice ( Oryza sativa L.) yield reductions due to weed competition ranged from 42 to 65% in field experiments conducted in eastern Utter Pradash, India. The most critical period, when crop losses due to weed competition were most severe, ranged from 10 to 20 days after emergence. Yields generally continued to increase, however, as the length of the weed‐free period increased. The weed flora consisted of various grasses, sedges and broadleaved species. The most effective herbicide treatment evaluated was a pre‐emergence application of alachlor followed by a post‐emergence application of propanil or one mechanical weeding.
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Claims 5
Claim · model-written summary
Weed competition reduced upland rice yield by 42 to 65%.
- Taxon
- Oryza sativa L.
Oryza sativae0 - Outcome
- yield reductions due to weed competitione0
- Direction
- reductionse0
- Value
- 42 to 65%e0
- Setting
- eastern Utter Pradash, Indiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In direct‐seeded upland rice ( Oryza sativa L.) yield reductions due to weed competition ranged from 42 to 65% in field experiments conducted in eastern Utter Pradash, India.”
Claim · model-written summary
The most severe weed competition losses occurred 10 to 20 days after emergence.
- Taxon
- riceOryza sativat0
- Outcome
- crop losses due to weed competitione0
- Direction
- most severee0
- Value
- 10 to 20 days after emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The most critical period, when crop losses due to weed competition were most severe, ranged from 10 to 20 days after emergence.”
Claim · model-written summary
Rice yield generally rose with a longer weed-free period.
- Taxon
- riceOryza sativat0
- Treatment
- length of the weed‐free periode0
- Outcome
- Yieldse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Yields generally continued to increase, however, as the length of the weed‐free period increased.”
Claim · model-written summary
The weed flora comprised grasses, sedges and broadleaved species.
- Taxon
- riceOryza sativat0
- Interactor
- grasses, sedges and broadleaved speciese0weed
- Outcome
- weed florae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The weed flora consisted of various grasses, sedges and broadleaved species.”
Claim · model-written summary
Pre-emergence alachlor followed by post-emergence propanil or one mechanical weeding was the most effective herbicide treatment.
- Taxon
- riceOryza sativat0
- Treatment
- pre‐emergence application of alachlor followed by a post‐emergence application of propanil or one mechanical weedinge0
- Outcome
- most effective herbicide treatmente0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The most effective herbicide treatment evaluated was a pre‐emergence application of alachlor followed by a post‐emergence application of propanil or one mechanical weeding.”
The same questions in other papers
propanil · molecular: metabolites · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- positive
- positive
herbicide · molecular: metabolites · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
5 papers more in this group
See all 9 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.