Abstract
Field studies were conducted from 1988 to 1989 to evaluate the efficacy of fenoxaprop as a post-emergence herbicide in transplanted, lowland rice. Results showed that application of fenoxaprop-p-ethyl at 30 g ai/ha at the 3 to 5 leaf stage of annual grasses or at 16 to 21 days after transplanting rice seedlings provided excellent control of Echinochloa crusgalli (L.) P. Beauv and E. glabrescens Munro ex Hook.f. Broadleaf weeds and sedges were not affected. Tank-mixed application with 2,4-D IBE (2,4-Dichlorophenoxyacetic acid isobutyl ester) or sulfonyl urea resulted in broad spectrum weed control and higher significant yields. Likewise, follow-up treatment with 2,4-D IBE or sulfonyl urea were equally effective. Better results were obtained when treatment was made at saturated field condition than with 3 to 5 cm standing water. Three days after herbicide application (DAA), rice seedlings showed chlorosis of the base of the youngest leaves, sporadic chlorotic spots in older leaves and slight burning of leaf tips. Crop phytotoxicity ranged from 5 to 10% which peaked at 7 DAA with 15 to 25%. Chlorosis did not progress further and plants developed normal green leaves toward 14 DAA. Initial crop injury did not affect the yield of rice which suggests the feasibility of using fenoxaprop-p-ethyl for post-emergence weed control in lowland, transplanted rice.
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Claims 13
Claim · model-written summary
Fenoxaprop-p-ethyl gave excellent control of Echinochloa crusgalli.
- Taxon
- rice
Oryza sativat0 - Treatment
- fenoxaprop-p-ethyl at 30 g ai/hae0
- Interactor
- Echinochloa crusgalli
Echinochloa crus-gallie0weed - Outcome
- control of Echinochloa crusgallie0
- Direction
- excellente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of fenoxaprop-p-ethyl at 30 g ai/ha at the 3 to 5 leaf stage of annual grasses or at 16 to 21 days after transplanting rice seedlings provided excellent control of Echinochloa crusgalli (L.) P. Beauv”
t0“rice”
Claim · model-written summary
Fenoxaprop-p-ethyl gave excellent control of E. glabrescens.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxaprop-p-ethyl at 30 g ai/hae0
- Interactor
- E. glabrescensEchinochloa glabrescense0weed
- Outcome
- control of Echinochloa crusgalli (L.) P. Beauv and E. glabrescense0
- Direction
- excellente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of fenoxaprop-p-ethyl at 30 g ai/ha at the 3 to 5 leaf stage of annual grasses or at 16 to 21 days after transplanting rice seedlings provided excellent control of Echinochloa crusgalli (L.) P. Beauv and E. glabrescens Munro ex Hook.f.”
t0“rice”
Claim · model-written summary
Broadleaf weeds and sedges were unaffected.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxaprop-p-ethyle1
- Interactor
- Broadleaf weeds and sedgese0weed
- Outcome
- Broadleaf weeds and sedgese0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broadleaf weeds and sedges were not affected”
e1“application of fenoxaprop-p-ethyl at 30 g ai/ha”
t0“rice”
Claim · model-written summary
Tank mixing with 2,4-D IBE or sulfonyl urea broadened weed control.
- Taxon
- riceOryza sativat0
- Treatment
- Tank-mixed application with 2,4-D IBE (2,4-Dichlorophenoxyacetic acid isobutyl ester) or sulfonyl ureae0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- broad spectrume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank-mixed application with 2,4-D IBE (2,4-Dichlorophenoxyacetic acid isobutyl ester) or sulfonyl urea resulted in broad spectrum weed control and higher significant yields”
t0“rice”
Claim · model-written summary
Tank mixing with 2,4-D IBE or sulfonyl urea raised rice yield significantly.
- Taxon
- riceOryza sativat0
- Treatment
- Tank-mixed application with 2,4-D IBE (2,4-Dichlorophenoxyacetic acid isobutyl ester) or sulfonyl ureae0
- Outcome
- yieldse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank-mixed application with 2,4-D IBE (2,4-Dichlorophenoxyacetic acid isobutyl ester) or sulfonyl urea resulted in broad spectrum weed control and higher significant yields”
t0“rice”
Claim · model-written summary
Follow-up 2,4-D IBE or sulfonyl urea treatment was equally effective.
- Taxon
- riceOryza sativat0
- Treatment
- follow-up treatment with 2,4-D IBE or sulfonyl ureae0
- Outcome
- equally effectivee0
- Direction
- equally effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“follow-up treatment with 2,4-D IBE or sulfonyl urea were equally effective”
t0“rice”
Claim · model-written summary
Saturated field conditions produced better herbicide results than standing water.
- Taxon
- riceOryza sativat0
- Treatment
- saturated field conditione0
- Outcome
- Better resultse0
- Direction
- Bettere0
- Comparator
- 3 to 5 cm standing watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Better results were obtained when treatment was made at saturated field condition than with 3 to 5 cm standing water”
t0“rice”
Claim · model-written summary
Rice seedlings showed leaf chlorosis and tip burning three days after herbicide application.
- Taxon
- riceOryza sativae0
- Outcome
- chlorosis of the base of the youngest leaves, sporadic chlorotic spots in older leaves and slight burning of leaf tipse0
- Qualifier
- Three days after herbicide applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three days after herbicide application (DAA), rice seedlings showed chlorosis of the base of the youngest leaves, sporadic chlorotic spots in older leaves and slight burning of leaf tips”
Claim · model-written summary
Crop phytotoxicity initially ranged from 5 to 10%.
- Taxon
- riceOryza sativat0
- Outcome
- Crop phytotoxicitye0
- Value
- 5 to 10%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop phytotoxicity ranged from 5 to 10% which peaked at 7 DAA with 15 to 25%”
t0“rice”
Claim · model-written summary
Crop phytotoxicity peaked at 15 to 25% at seven days.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop phytotoxicity ranged from 5 to 10% which peaked at 7 DAA with 15 to 25%”
t0“rice”
Claim · model-written summary
Chlorosis stopped progressing and normal green leaves formed by day 14.
- Taxon
- riceOryza sativat0
- Outcome
- Chlorosis did not progress further and plants developed normal green leavese0
- Qualifier
- 14 DAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorosis did not progress further and plants developed normal green leaves toward 14 DAA”
t0“rice”
Claim · model-written summary
Initial crop injury did not reduce rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- Initial crop injurye0
- Outcome
- yield of ricee0
- Direction
- did not affecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Initial crop injury did not affect the yield of rice”
Claim · model-written summary
The authors consider fenoxaprop-p-ethyl feasible for post-emergence weed control in rice.
- Taxon
- riceOryza sativae0
- Outcome
- using fenoxaprop-p-ethyl for post-emergence weed controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“feasibility of using fenoxaprop-p-ethyl for post-emergence weed control in lowland, transplanted rice”
The same questions in other papers
2,4-D · weed · Oryza sativa (rice)Results differ
46 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- positive
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See all 49 papers →2,4-D · yield · Oryza sativa (rice)Positive and negative results
51 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- no effect
58 papers more in this group
See all 62 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.