Abstract
Abstract Field research evaluated peanut ( Arachis hypogaea L.) tolerance and weed control with preemergence (PRE) followed by early postemergence (EPOST) herbicide programs: PRE pyroxasulfone, S ‐metolachlor, flumioxazin, pendimethalin, ethalfluralin, diclosulam, or dimethenamid‐P, followed by EPOST application of paraquat + acetochlor + bentazon at 4 wk after PRE (WA‐PRE). The herbicides resulted in no differences in peanut injury at 2 WA‐PRE in 2019 but flumioxazin resulted in approximately two‐fold greater injury (>22%) than other treatments in 2020 because of heavy rainfall at peanut cracking. Palmer amaranth ( Amaranthus palmeri S.Watson) control with diclosulam was lower than with other herbicides. Carpetweed ( Mollugo verticillata L.) control with S ‐metolachlor and dimethenamid‐P was at least 10% lower than with pendimethalin, flumioxazin, or pyroxasulfone at 4 WA‐PRE. Palmer amaranth control 2 wk after the EPOST (WA‐EPOST) application was >94% for all treatments except diclosulam. Peanut injury at 2 WA‐EPOST was ≤28% but was minimal by 8 WA‐EPOST. Overall, yield with herbicide treatments was similar to the weedfree control. A greenhouse experiment evaluated postemergence herbicide combinations for Palmer amaranth control, including 2,4‐DB, acifluorfen, imazapic, bentazon + acifluorfen, pyroxasulfone + carfentrazone, and various combinations of each. Palmer amaranth control (≥99%) was greater and biomass (≤0.3 g plant –1 ) was lower with acifluorfen treatments than with other treatments. The 2,4‐DB + pyroxasulfone + carfentrazone treatment provided similar control to acifluorfen treatments. The EPOST paraquat + acetochlor + bentazon combinations following an effective PRE program will effectively control Palmer amaranth in peanut. Additionally, greenhouse experiments supported the use of acifluorfen for postemergence Palmer amaranth control.
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Claims 12
Claim · model-written summary
Peanut injury did not differ among herbicides in 2019 at 2 WA-PRE.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- herbicidese0
- Outcome
- peanut injurye0
- Direction
- no differencese0
- Qualifier
- 2 WA‐PRE in 2019e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The herbicides resulted in no differences in peanut injury at 2 WA‐PRE in 2019”
Claim · model-written summary
Flumioxazin caused about twofold greater peanut injury in 2020.
- Treatment
- flumioxazine0
- Outcome
- injurye0
- Direction
- greatere0
- Value
- >22%e0
- Qualifier
- heavy rainfall at peanut crackinge0
- Comparator
- other treatmentse0
Not reportedTaxon
Verbatim
e0“flumioxazin resulted in approximately two‐fold greater injury (>22%) than other treatments in 2020 because of heavy rainfall at peanut cracking.”
Claim · model-written summary
Diclosulam gave lower Palmer amaranth control.
- Taxon
- Amaranthus palmeri
Amaranthus palmerie0 - Treatment
- diclosulame0
- Interactor
- Amaranthus palmeriAmaranthus palmerie0weed
- Outcome
- Palmer amaranth ( Amaranthus palmeri S.Watson) controle0
- Direction
- lowere0
- Comparator
- other herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Palmer amaranth ( Amaranthus palmeri S.Watson) control with diclosulam was lower than with other herbicides.”
Claim · model-written summary
S-metolachlor and dimethenamid-P gave at least 10% lower carpetweed control.
- Treatment
- S ‐metolachlor and dimethenamid‐Pe0
- Interactor
- Mollugo verticillata
Mollugo verticillatae0weed - Outcome
- Carpetweed ( Mollugo verticillata L.) controle0
- Direction
- lowere0
- Value
- 10%e0
- Comparator
- pendimethalin, flumioxazin, or pyroxasulfonee0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carpetweed ( Mollugo verticillata L.) control with S ‐metolachlor and dimethenamid‐P was at least 10% lower than with pendimethalin, flumioxazin, or pyroxasulfone at 4 WA‐PRE.”
Claim · model-written summary
Postemergence Palmer amaranth control exceeded 94% except with diclosulam.
- Interactor
- Palmer amaranthe0weed
- Outcome
- Palmer amaranth controle0
- Value
- >94%e0
- Qualifier
- except diclosulame0
Not reportedTaxon
Verbatim
e0“Palmer amaranth control 2 wk after the EPOST (WA‐EPOST) application was >94% for all treatments except diclosulam.”
Claim · model-written summary
Peanut injury at 2 WA-EPOST was at most 28% and minimal by 8 WA-EPOST.
- Taxon
- PeanutArachis hypogaeae0
- Outcome
- Peanut injurye0
- Value
- ≤28%e0
- Qualifier
- 2 WA‐EPOSTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanut injury at 2 WA‐EPOST was ≤28% but was minimal by 8 WA‐EPOST.”
Claim · model-written summary
Herbicide treatment yield resembled weedfree control.
Not reportedTaxon
Verbatim
e0“Overall, yield with herbicide treatments was similar to the weedfree control.”
Claim · model-written summary
Acifluorfen gave at least 99% Palmer amaranth control.
- Treatment
- acifluorfen treatmentse0
- Interactor
- Palmer amaranthe0weed
- Outcome
- Palmer amaranth controle0
- Direction
- greatere0
- Value
- ≥99%e0
- Comparator
- other treatmentse0
Not reportedTaxon
Verbatim
e0“Palmer amaranth control (≥99%) was greater and biomass (≤0.3 g plant –1 ) was lower with acifluorfen treatments than with other treatments.”
Claim · model-written summary
Acifluorfen reduced Palmer amaranth biomass to at most 0.3 g per plant.
- Treatment
- acifluorfen treatmentse0
- Interactor
- Palmer amaranthe0weed
- Outcome
- biomasse0
- Direction
- lowere0
- Value
- ≤0.3 g plant –1e0
- Comparator
- other treatmentse0
Not reportedTaxon
Verbatim
e0“Palmer amaranth control (≥99%) was greater and biomass (≤0.3 g plant –1 ) was lower with acifluorfen treatments than with other treatments.”
Claim · model-written summary
2,4-DB plus pyroxasulfone plus carfentrazone controlled Palmer amaranth similarly to acifluorfen.
- Treatment
- 2,4‐DB + pyroxasulfone + carfentrazone treatmente0
- Outcome
- controle0
- Direction
- similare0
- Comparator
- acifluorfen treatmentse0
Not reportedTaxon
Verbatim
e0“The 2,4‐DB + pyroxasulfone + carfentrazone treatment provided similar control to acifluorfen treatments.”
Claim · model-written summary
Authors recommend effective PRE followed by EPOST paraquat plus acetochlor plus bentazon.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- EPOST paraquat + acetochlor + bentazon combinationse0
- Interactor
- Palmer amaranthe0weed
- Outcome
- effectively control Palmer amaranthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The EPOST paraquat + acetochlor + bentazon combinations following an effective PRE program will effectively control Palmer amaranth in peanut.”
Claim · model-written summary
Authors support acifluorfen for postemergence Palmer amaranth control.
Not reportedTaxon
Verbatim
e0“greenhouse experiments supported the use of acifluorfen for postemergence Palmer amaranth control.”
The same questions in other papers
herbicide · crop injury · Arachis hypogaea (peanut)Positive and negative results
22 papers in the same direction as this paper · 4 in the opposite direction
- positive
- negative
- positive
23 papers more in this group
See all 27 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.