Abstract
The ethyl ester of fenoxaprop {(±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy] phenoxy] propanoic acid} was applied to rice ( Oryza sativa L.) that was heavily infested with barnyardgrass [ Echinochloa crus-galli (L.) Beauv. # ECHCG] during a 3-yr study. Applications were made to two- to three-leaf, three- to four-leaf, five- to six-leaf, or tillering barnyardgrass. Barnyardgrass control at 9 weeks after final treatment was greater than 90% for all growth stages except the 0.1 kg ai/ha rate applied to three- to four-leaf barnyardgrass in 1983. In 1984, the sequential application of fenoxaprop made at the three- to four-leaf stage controlled more than 95% when rated at 9 weeks. Rates of 0.17 and 0.2 kg ai/ha and the sequential treatment of 0.1 kg ai/ha followed by 0.1 kg ai/ha 7 to 10 days later controlled greater than 90% at 9 weeks when applied to three- to four- and five- to six-leaf barnyardgrass in 1985. In general, barnyardgrass was controlled by fenoxaprop rates greater than 0.1 kg ai/ha when applied to any growth stage evaluated up through the five- to six-leaf stage. However, acceptable control of tillering barnyardgrass was achieved in only 1 of 3 years. Yields were increased due to barnyardgrass control all years with all treatments except those applied at tillering. However, control was sufficient to increase yields over that of the check for all tillering treatments except the 0.1 kg ai/ha rate in 1984 and 1985 and the 0.17 kg ai/ha treatment in 1985.
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Claims 9
Claim · model-written summary
Fenoxaprop gave greater than 90% barnyardgrass control at nine weeks across growth stages, except one low-rate treatment.
- Taxon
- Rice
Oryza sativat0 - Treatment
- fenoxaprope1
- Interactor
- Barnyardgrass
Echinochloa crus-gallie0weed - Outcome
- Barnyardgrass controle0
- Direction
- greater thane0
- Value
- 90%e0
- Qualifier
- except the 0.1 kg ai/ha rate applied to three- to four-leaf barnyardgrass in 1983e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barnyardgrass control at 9 weeks after final treatment was greater than 90% for all growth stages except the 0.1 kg ai/ha rate applied to three- to four-leaf barnyardgrass in 1983”
e1“The ethyl ester of fenoxaprop”
t0“Rice (Oryza sativa)”
Claim · model-written summary
Sequential fenoxaprop at the three- to four-leaf stage controlled more than 95% of barnyardgrass at nine weeks in 1984.
- Taxon
- RiceOryza sativat0
- Treatment
- sequential application of fenoxaprope0
- Interactor
- BarnyardgrassEchinochloa crus-gallit1weed
- Outcome
- Barnyardgrasst1
- Direction
- controlled more thane0
- Value
- 95%e0
- Setting
- 1984e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1984, the sequential application of fenoxaprop made at the three- to four-leaf stage controlled more than 95% when rated at 9 weeks”
t0“Rice (Oryza sativa)”
t1“Barnyardgrass (Echinochloa crus-galli)”
Claim · model-written summary
The 0.17 kg ai/ha rate controlled greater than 90% of barnyardgrass at nine weeks in 1985.
- Taxon
- RiceOryza sativat0
- Treatment
- 0.17e0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- barnyardgrasse0
- Direction
- controlled greater thane0
- Value
- 90%e0
- Qualifier
- at 9 weeks when applied to three- to four- and five- to six-leaf barnyardgrass in 1985e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rates of 0.17 and 0.2 kg ai/ha and the sequential treatment of 0.1 kg ai/ha followed by 0.1 kg ai/ha 7 to 10 days later controlled greater than 90% at 9 weeks when applied to three- to four- and five- to six-leaf barnyardgrass in 1985”
t0“Rice (Oryza sativa)”
Claim · model-written summary
The 0.2 kg ai/ha rate controlled greater than 90% of barnyardgrass at nine weeks in 1985.
- Taxon
- RiceOryza sativat0
- Treatment
- 0.2 kg ai/hae0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- barnyardgrasse0
- Direction
- controlled greater thane0
- Value
- 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rates of 0.17 and 0.2 kg ai/ha and the sequential treatment of 0.1 kg ai/ha followed by 0.1 kg ai/ha 7 to 10 days later controlled greater than 90% at 9 weeks when applied to three- to four- and five- to six-leaf barnyardgrass in 1985”
t0“Rice (Oryza sativa)”
Claim · model-written summary
Sequential 0.1 kg ai/ha applications controlled greater than 90% of barnyardgrass at nine weeks in 1985.
- Taxon
- RiceOryza sativat0
- Treatment
- 0.1 kg ai/ha followed by 0.1 kg ai/ha 7 to 10 days latere0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- barnyardgrasse0
- Direction
- controlled greater thane0
- Value
- 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sequential treatment of 0.1 kg ai/ha followed by 0.1 kg ai/ha 7 to 10 days later controlled greater than 90% at 9 weeks when applied to three- to four- and five- to six-leaf barnyardgrass in 1985”
t0“Rice (Oryza sativa)”
Claim · model-written summary
Rates above 0.1 kg ai/ha generally controlled barnyardgrass through the five- to six-leaf stage.
- Taxon
- RiceOryza sativat0
- Treatment
- fenoxaprop rates greater than 0.1 kg ai/hae0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- barnyardgrasse0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barnyardgrass was controlled by fenoxaprop rates greater than 0.1 kg ai/ha when applied to any growth stage evaluated up through the five- to six-leaf stage”
t0“Rice (Oryza sativa)”
Claim · model-written summary
Tillering-stage application gave acceptable barnyardgrass control in only one of three years.
- Taxon
- RiceOryza sativat0
- Treatment
- fenoxaprope1
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- control of tillering barnyardgrasse0
- Direction
- acceptablee0
- Value
- 1 of 3 yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acceptable control of tillering barnyardgrass was achieved in only 1 of 3 years”
e1“In general, barnyardgrass was controlled by fenoxaprop”
t0“Rice (Oryza sativa)”
Claim · model-written summary
Barnyardgrass control increased rice yield in all years except for tillering-stage treatments.
- Taxon
- RiceOryza sativat0
- Treatment
- barnyardgrass controle0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- Yieldse0
- Direction
- increasede0
- Qualifier
- except those applied at tilleringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were increased due to barnyardgrass control all years with all treatments except those applied at tillering”
t0“Rice (Oryza sativa)”
Claim · model-written summary
Most tillering treatments raised yield above the check, with named rate-and-year exceptions.
- Taxon
- RiceOryza sativat0
- Treatment
- tillering treatmentse0
- Outcome
- yieldse0
- Direction
- increasee0
- Qualifier
- except the 0.1 kg ai/ha rate in 1984 and 1985 and the 0.17 kg ai/ha treatment in 1985e0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“control was sufficient to increase yields over that of the check for all tillering treatments except the 0.1 kg ai/ha rate in 1984 and 1985 and the 0.17 kg ai/ha treatment in 1985”
t0“Rice (Oryza sativa)”
The same questions in other papers
Echinochloa crus-galli · yield · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 12 in the opposite direction
- no effect
- negative
- negative
12 papers more in this group
See all 16 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.