Abstract
Laboratory and field research was conducted to determine the influence of winter wheat ( Triticum aestivum L.) stubble on weed control and the dissipation of emulsifiable concentrate formulations (EC) of metolachlor [2-chloro- N -(2-ethyl-6-methylphenyl)- N -(2-methoxy-1-methylethyl) acetamide], alachlor [2-chloro- N -(2,6-diethylphenyl)- N -(methoxymethyl)acetamide], and acetochlor [2-chloro- N -(ethoxymethyl)- N -(2-ethyl-6-methylphenyl)acetamide]; and microencapsulated formulations (ME) of alachlor and acetochlor. EC metolachlor provided better weed control than EC alachlor when applied 28 days before planting sorghum ( Sorghum bicolor L.) and similar weed control when applied at 1 or 14 days before planting. This difference was attributed to more rapid EC alachlor dissipation. The order of relative herbicide persistence at 24 C and 33% (w/w) soil moisture in a silty clay loam was ME acetochlor = ME alachlor > EC metolachlor > EC acetochlor = EC alachlor. Acetanilide degradation was affected more by increasing temperature from 15 to 24 C than by increasing soil moisture from 15 to 33%. More herbicide was washed from overwintered than fresh straw in the first 1 cm of simulated rainfall. In the first simulated rainfall event, more herbicide was removed from straw that had been dry than wet at application, but the amount of herbicide remaining on dry and wet straw was similar after four events. Formulation generally did not affect herbicide wash-off.
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Claims 9
Claim · model-written summary
EC metolachlor gave better weed control in sorghum than EC alachlor when applied 28 days before planting.
- Treatment
- EC metolachlore1
- Outcome
- weed controle1
- Direction
- bettere1
- Qualifier
- 28 days before plantinge1
- Comparator
- EC alachlore1
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“EC metolachlor provided better weed control than EC alachlor when applied 28 days before planting sorghum ( Sorghum bicolor L.) and similar weed control when applied at 1 or 14 days before planting”
Claim · model-written summary
EC metolachlor gave similar weed control to EC alachlor when applied 1 or 14 days before sorghum planting.
- Treatment
- EC metolachlore1
- Outcome
- weed controle1
- Direction
- similare1
- Qualifier
- when applied at 1 or 14 days before plantinge1
- Comparator
- EC alachlore1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“EC metolachlor provided better weed control than EC alachlor when applied 28 days before planting sorghum ( Sorghum bicolor L.) and similar weed control when applied at 1 or 14 days before planting”
Claim · model-written summary
The weed control difference between EC metolachlor and EC alachlor is attributed to more rapid EC alachlor dissipation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“EC metolachlor provided better weed control than EC alachlor when applied 28 days before planting sorghum ( Sorghum bicolor L.) and similar weed control when applied at 1 or 14 days before planting”
e2“This difference was attributed to more rapid EC alachlor dissipation”
Claim · model-written summary
Relative herbicide persistence in a silty clay loam at 24 C and 33% soil moisture ranked the acetanilide formulations.
- Taxon
- winter wheat
Triticum aestivume0 - Outcome
- relative herbicide persistencee3
- Setting
- silty clay loame3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“influence of winter wheat ( Triticum aestivum L.) stubble on weed control”
e3“The order of relative herbicide persistence at 24 C and 33% (w/w) soil moisture in a silty clay loam was ME acetochlor = ME alachlor > EC metolachlor > EC acetochlor = EC alachlor”
Claim · model-written summary
Increasing temperature from 15 to 24 C affected acetanilide degradation more than increasing soil moisture from 15 to 33%.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- increasing temperature from 15 to 24 Ce4
- Outcome
- Acetanilide degradatione4
- Direction
- affected moree4
- Comparator
- increasing soil moisture from 15 to 33%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“influence of winter wheat ( Triticum aestivum L.) stubble on weed control”
e4“Acetanilide degradation was affected more by increasing temperature from 15 to 24 C than by increasing soil moisture from 15 to 33%”
Claim · model-written summary
More herbicide was washed from overwintered wheat straw than from fresh straw in the first 1 cm of simulated rainfall.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- overwinterede5
- Outcome
- herbicide was washede5
- Direction
- Moree5
- Comparator
- fresh strawe5
- Setting
- first 1 cm of simulated rainfalle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“influence of winter wheat ( Triticum aestivum L.) stubble on weed control”
e5“More herbicide was washed from overwintered than fresh straw in the first 1 cm of simulated rainfall”
Claim · model-written summary
More herbicide was removed from dry than from wet straw in the first simulated rainfall event.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- drye6
- Outcome
- herbicide was removede6
- Direction
- moree6
- Qualifier
- first simulated rainfall evente6
- Comparator
- wete6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“influence of winter wheat ( Triticum aestivum L.) stubble on weed control”
e6“In the first simulated rainfall event, more herbicide was removed from straw that had been dry than wet at application, but the amount of herbicide remaining on dry and wet straw was similar after four events”
Claim · model-written summary
The amount of herbicide remaining on dry and wet straw was similar after four rainfall events.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- dry and wet strawe6
- Outcome
- amount of herbicide remaininge6
- Direction
- was similare6
- Qualifier
- after four eventse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“influence of winter wheat ( Triticum aestivum L.) stubble on weed control”
e6“In the first simulated rainfall event, more herbicide was removed from straw that had been dry than wet at application, but the amount of herbicide remaining on dry and wet straw was similar after four events”
Claim · model-written summary
Formulation generally did not affect acetanilide herbicide wash-off from wheat straw.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Formulatione7
- Outcome
- herbicide wash-offe7
- Direction
- did not affecte7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“influence of winter wheat ( Triticum aestivum L.) stubble on weed control”
e7“Formulation generally did not affect herbicide wash-off”
The same questions in other papers
metolachlor · weed · SorghumResults agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.