Abstract
In experiments conducted at the International Rice Research Institute, Philippines, all commonly marketed formulations and derivatives of either [(4-chloro-o-tolyl)oxy]acetic acid (MCPA) or (2,4-dichlorophenoxy) acetic acid (2,4,D) performed in about the same way and were equally safe for use in controlling barnyardgrass [ Echinochloa crusgalli (L.) Beauv.] and other annual weeds in transplanted rice ( Oryza sativa L.). Eleven-day-old rice seedlings were more susceptible to amine salts of 2,4-D or MCPA than 21-day-old seedlings. Granular formulations of some chemicals were relatively less toxic than liquid formulations. The toxic effect of spraying the potassium salt of MCPA was less prolonged on the indica variety, IR22, than it was on the japonica variety, Chianung 242, which had delayed flowering and maturity.
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Claims 5
Claim · model-written summary
MCPA and 2,4-D formulations performed about the same in controlling barnyardgrass in transplanted rice.
- Taxon
- rice
Oryza sativat0 - Treatment
- MCPAe0
- Interactor
- barnyardgrass
Echinochloa crus-gallie1weed - Outcome
- controlling barnyardgrasse1
- Direction
- performed in about the same waye1
- Qualifier
- equally safe for usee1
- Comparator
- 2,4,De0
- Setting
- International Rice Research Institute, Philippinese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barnyardgrass Control in Transplanted Rice”
e0“all commonly marketed formulations and derivatives of either [(4-chloro-o-tolyl)oxy]acetic acid (MCPA) or (2,4-dichlorophenoxy) acetic acid (2,4,D)”
e1“performed in about the same way and were equally safe for use in controlling barnyardgrass”
e2“In experiments conducted at the International Rice Research Institute, Philippines”
Claim · model-written summary
Granular herbicide formulations were less toxic to rice than liquid formulations.
- Taxon
- riceOryza sativat0
- Treatment
- Granular formulationse1
- Outcome
- toxice1
- Direction
- less toxice1
- Comparator
- liquid formulationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barnyardgrass Control in Transplanted Rice”
e1“Granular formulations of some chemicals were relatively less toxic than liquid formulations”
Claim · model-written summary
Eleven-day-old rice seedlings were more susceptible to amine salts of 2,4-D or MCPA than 21-day-old seedlings.
- Taxon
- riceOryza sativat0
- Organ / stage
- Eleven-day-old rice seedlingse1
- Treatment
- amine salts of 2,4-D or MCPAe1
- Outcome
- susceptiblee1
- Direction
- more susceptiblee1
- Comparator
- 21-day-old seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barnyardgrass Control in Transplanted Rice”
e1“Eleven-day-old rice seedlings were more susceptible to amine salts of 2,4-D or MCPA than 21-day-old seedlings”
Claim · model-written summary
The toxic effect of spraying the potassium salt of MCPA was less prolonged on the indica variety IR22 than on the japonica variety Chianung 242.
- Taxon
- riceOryza sativat0
- Material
- IR22e1
- Treatment
- spraying the potassium salt of MCPAe1
- Outcome
- toxic effecte1
- Direction
- less prolongede1
- Comparator
- Chianung 242e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barnyardgrass Control in Transplanted Rice”
e1“The toxic effect of spraying the potassium salt of MCPA was less prolonged on the indica variety, IR22, than it was on the japonica variety, Chianung 242”
Claim · model-written summary
The japonica variety Chianung 242 had delayed flowering and maturity after MCPA spraying.
- Taxon
- riceOryza sativat0
- Material
- Chianung 242e1
- Outcome
- flowering and maturitye1
- Direction
- delayede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barnyardgrass Control in Transplanted Rice”
e1“the japonica variety, Chianung 242, which had delayed flowering and maturity”
The same questions in other papers
amine · disease · Oryza sativa (rice)Positive and negative results
1 in the opposite direction
- positive
(4-chloro-2-methylphenoxy)acetic acid · Echinochloa crus-galli · Oryza sativa (rice)Positive and negative results
2 in the opposite direction
- positive
- positive
2,4-D · disease · Oryza sativa (rice)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →application · pest · Oryza sativa (rice)Positive and negative results
36 papers in the same direction as this paper · 6 in the opposite direction
- negative
- no effect
- negative
39 papers more in this group
See all 43 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.