Abstract
Background: Since peanut fields are often treated with fungicides during the growing season to control stem rot disease (caused by Sclerotium rolfsii Sacc.) and early and late leaf spot disease [caused by Cercospora arachidicola Hori) and Cercosporidium personatum (Berk. & M.A. Curtis) Deighton, respectively], weeds can also interfere with the uniform deposition of fungicides and therefore reduce disease control. Aims: The present study evaluates weed control and peanut response with the premix of carfentrazone plus pyroxasulfone (C + P). Study Design: Randomized complete block design with 3 to 4 reps depending on location. Place and Duration of Study: During the 2022 through 2024 growing seasons in the Texas Rolling Plains near Vernon and in south Texas near Yoakum. Methodology: Plots at Yoakum consisted of two rows spaced 97 cm apart and 7.6 m long while at Vernon plots were 2 rows spaced 102 cm apart by 7.6 m long in 2022 and 2024 and 4 rows spaced 102 cm apart by 18.2 m long in 2023. Preemergence (PRE) treatments were applied 2 to 10 days after planting (DAP). Peanut cracking (CRACK) treatments were applied 4 to 10 DAP. Postemergence (POST) treatments were applied 30 to 40 DAP. Weed control and peanut injury data were arcsine transformed prior to analysis of variance. Means were compared with Fisher’s Protected LSD test at the 5% probability level. The untreated control was not included in the weed control analysis but was included in the yield analysis. Results: In south Texas, Palmer amaranth (Amaranthus palmeri S. Wats.) control was > 90% with either pendimethalin applied PRE followed by (fb) S-metolachlor applied at CRACK fb C + P plus clethodim applied POST or S-metolachlor plus paraquat applied at CRACK fb S-metolachlor plus clethodim applied POST. All herbicide systems which contained C + P controlled Texas millet [Urochloa texana (Buckl.)] 87 to 98% while Smellmelon (Cucumis melo L. var. Dudaim Naud.) control with C + P systems ranged from 58 to 100%. In the Rolling Plains, A. palmeri and U. texana control was most consistent (76 to 91%) with C + P applied both at CRACK and POST. Under moderate A. palmeri pressure (4 to 5 plants/m2), all herbicide systems increased peanut yield over the untreated check (65%), while with no weed pressure, no differences in yield were noted with any herbicide treatment from the untreated check. Conclusion: The premix of C + P can help peanut producers manage their annual broadleaf weed problems. Broadleaf weeds cause Texas peanut growers considerable problems and can be hard-to-control with many of the presently used herbicides. Oftentimes, the premix of C + P does not effectively control large-seeded annual grasses such as Texas millet and requires the use of a graminicide such as fluazifop-P-butyl, clethodim, or sethoxydim (WSSA Group 1 herbicides) to improve season-long control.
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Claims 9
Claim · model-written summary
In south Texas, Palmer amaranth control was above 90% with several herbicide systems.
- Taxon
- peanut
Arachis hypogaeat0 - Interactor
- Amaranthus palmeri
Amaranthus palmerie1weed - Outcome
- controle1
- Value
- > 90%e1
- Setting
- south Texase1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e1“In south Texas, Palmer amaranth (Amaranthus palmeri S. Wats.) control was > 90%”
Claim · model-written summary
All herbicide systems containing C + P controlled Texas millet (Urochloa texana) by 87 to 98%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- C + Pe2
- Interactor
- Urochloa texana
Urochloa texanae2weed - Outcome
- controle2
- Value
- 87 to 98%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e2“All herbicide systems which contained C + P controlled Texas millet [Urochloa texana (Buckl.)] 87 to 98% while Smellmelon (Cucumis melo L. var. Dudaim Naud.) control with C + P systems ranged from 58 to 100%”
Claim · model-written summary
C + P systems controlled Smellmelon by 58 to 100%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- C + P systemse2
- Interactor
- Smellmelone2weed
- Outcome
- controle2
- Value
- 58 to 100%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e2“All herbicide systems which contained C + P controlled Texas millet [Urochloa texana (Buckl.)] 87 to 98% while Smellmelon (Cucumis melo L. var. Dudaim Naud.) control with C + P systems ranged from 58 to 100%”
Claim · model-written summary
In the Rolling Plains, control of Amaranthus palmeri and Urochloa texana was 76 to 91% with C + P applied both at CRACK and POST.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- C + P applied both at CRACK and POSTe3
- Interactor
- A. palmeriAmaranthus palmerie3weed
- Second interactor
- U. texanaUrochloa texanae3weed
- Outcome
- controle3
- Value
- 76 to 91%e3
- Setting
- Rolling Plainse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e3“In the Rolling Plains, A. palmeri and U. texana control was most consistent (76 to 91%) with C + P applied both at CRACK and POST”
Claim · model-written summary
Under moderate Palmer amaranth pressure, all herbicide systems increased peanut yield over the untreated check by 65%.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- herbicide systemse4
- Interactor
- A. palmeriAmaranthus palmerie4weed
- Outcome
- peanut yielde4
- Direction
- increasede4
- Value
- 65%e4
- Qualifier
- 4 to 5 plants/m2e4
- Comparator
- untreated checke4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e4“Under moderate A. palmeri pressure (4 to 5 plants/m2), all herbicide systems increased peanut yield over the untreated check (65%), while with no weed pressure, no differences in yield were noted with any herbicide treatment from the untreated check”
Claim · model-written summary
With no weed pressure, no herbicide treatment changed peanut yield relative to the untreated check.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- any herbicide treatmente4
- Outcome
- yielde4
- Direction
- no differencese4
- Qualifier
- no weed pressuree4
- Comparator
- untreated checke4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e4“Under moderate A. palmeri pressure (4 to 5 plants/m2), all herbicide systems increased peanut yield over the untreated check (65%), while with no weed pressure, no differences in yield were noted with any herbicide treatment from the untreated check”
Claim · model-written summary
The premix of C + P can help peanut producers manage annual broadleaf weed problems (author recommendation).
- Taxon
- peanutArachis hypogaeat0
- Treatment
- premix of C + Pe5
- Outcome
- manage their annual broadleaf weed problemse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e5“The premix of C + P can help peanut producers manage their annual broadleaf weed problems”
Claim · model-written summary
C + P often does not effectively control large-seeded annual grasses such as Texas millet.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- C + Pe6
- Interactor
- Texas millete6weed
- Outcome
- control large-seeded annual grassese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e6“Oftentimes, the premix of C + P does not effectively control large-seeded annual grasses such as Texas millet”
Claim · model-written summary
C + P needs a graminicide to improve season-long control of large-seeded grasses (author recommendation).
- Taxon
- peanutArachis hypogaeat0
- Treatment
- graminicide such as fluazifop-P-butyl, clethodim, or sethoxydime7
- Outcome
- season-long controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Controlling Weeds in Peanut (Arachis hypogaea L.)”
e7“requires the use of a graminicide such as fluazifop-P-butyl, clethodim, or sethoxydim (WSSA Group 1 herbicides) to improve season-long control”
The same questions in other papers
herbicide · yield · Arachis hypogaea (peanut)Positive and negative results
57 papers in the same direction as this paper · 172 in the opposite direction
- positive
- positive
- positive
226 papers more in this group
See all 230 papers →herbicide · Amaranthus palmeri · Arachis hypogaea (peanut)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.