Abstract
ABSTRACT Herbicide tank mixes are often used to reduce peanut injury caused by paraquat and broaden the weed control spectrum. New peanut cultivars are continuously being introduced therefore determining tolerance to paraquat based herbicide programs is essential to provide growers with appropriate recommendations. The objective of this trial was to evaluate effect of paraquat based herbicide programs on newer peanut cultivars growth and yield. Field trials were conducted in Macon, Henry and Baldwin counties in Alabama in 2016 and 2017 and the peanut cultivars ‘Georgia 06G', ‘Georgia 12Y', ‘Georgia 14N', and ‘TufRunner 511’ were evaluated. Paraquat was applied alone (210, 280, 420 g ai/ha), in tank mixes with either bentazon plus acifluorfen or 2,4-DB and one of the following, S-metolachlor, pyroxasulfone, acetochlor, or pyroxasulfone plus carfentrazone at the highest labeled rates 3 to 4 wk after peanut planting. No cultivar by treatment interactions were observed for any growth parameters evaluated for any location. In 2017, paraquat either applied at 280 g ai/ha alone, tank mixed with S-metolachlor plus 2,4-DB, or with S-metolachlor plus bentazon plus acifluorfen significantly reduced canopy widths of 22 to 30%, 12 to 22%, and 20 to 37% respectively at 45 to 48 DAP when compared to the non-treated check (NTC). Yield reductions compared to the NTC were rare, paraquat plus bentazon plus acifluorfen plus pyroxasulfone plus carfentrazone had a 13% yield loss in Henry County and a 7% yield loss with paraquat 280 g ai/ha at Baldwin County in 2016 only. Data indicates peanut stunting may be observed following applications of paraquat tank mixes evaluated in this study, but it is unlikely these effects result in yield loss.
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Claims 7
Claim · model-written summary
Cultivar and treatment did not interact for measured growth traits at any location.
Verbatim
e0“No cultivar by treatment interactions were observed for any growth parameters evaluated for any location”
Claim · model-written summary
Paraquat alone at 280 g ai/ha reduced canopy width by 22 to 30% in 2017.
- Taxon
- Peanut
Arachis hypogaeat0 - Treatment
- paraquat either applied at 280 g ai/ha alonee0
- Outcome
- canopy widthse0
- Direction
- reducede0
- Value
- 22 to 30%e0
- Comparator
- non-treated check (NTC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2017, paraquat either applied at 280 g ai/ha alone, tank mixed with S-metolachlor plus 2,4-DB, or with S-metolachlor plus bentazon plus acifluorfen significantly reduced canopy widths of 22 to 30%, 12 to 22%, and 20 to 37% respectively at 45 to 48 DAP when compared to the non-treated check (NTC)”
t0“Peanut”
Claim · model-written summary
Paraquat with S-metolachlor and 2,4-DB reduced canopy width by 12 to 22% in 2017.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- S-metolachlor plus 2,4-DBe0
- Outcome
- canopy widthse0
- Direction
- reducede0
- Value
- 12 to 22%e0
- Comparator
- non-treated check (NTC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2017, paraquat either applied at 280 g ai/ha alone, tank mixed with S-metolachlor plus 2,4-DB, or with S-metolachlor plus bentazon plus acifluorfen significantly reduced canopy widths of 22 to 30%, 12 to 22%, and 20 to 37% respectively at 45 to 48 DAP when compared to the non-treated check (NTC)”
t0“Peanut”
Claim · model-written summary
Paraquat with S-metolachlor, bentazon and acifluorfen reduced canopy width by 20 to 37% in 2017.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- S-metolachlor plus bentazon plus acifluorfene0
- Outcome
- canopy widthse0
- Direction
- reducede0
- Value
- 20 to 37%e0
- Comparator
- non-treated check (NTC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2017, paraquat either applied at 280 g ai/ha alone, tank mixed with S-metolachlor plus 2,4-DB, or with S-metolachlor plus bentazon plus acifluorfen significantly reduced canopy widths of 22 to 30%, 12 to 22%, and 20 to 37% respectively at 45 to 48 DAP when compared to the non-treated check (NTC)”
t0“Peanut”
Claim · model-written summary
Paraquat with bentazon, acifluorfen, pyroxasulfone and carfentrazone caused 13% yield loss in Henry County.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- paraquat plus bentazon plus acifluorfen plus pyroxasulfone plus carfentrazonee0
- Outcome
- yield losse0
- Direction
- losse0
- Value
- 13%e0
- Comparator
- NTCe1
- Setting
- Henry Countye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“paraquat plus bentazon plus acifluorfen plus pyroxasulfone plus carfentrazone had a 13% yield loss in Henry County”
e1“Yield reductions compared to the NTC were rare”
t0“Peanut”
Claim · model-written summary
Paraquat at 280 g ai/ha caused 7% yield loss in Baldwin County in 2016.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- paraquat 280 g ai/hae0
- Outcome
- yield losse0
- Direction
- losse0
- Value
- 7%e0
- Comparator
- NTCe1
- Setting
- Baldwin Countye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 7% yield loss with paraquat 280 g ai/ha at Baldwin County in 2016 only”
e1“Yield reductions compared to the NTC were rare”
t0“Peanut”
Claim · model-written summary
Peanut stunting after these paraquat mixtures is unlikely to cause yield loss.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- peanut stuntinge0
- Qualifier
- unlikely these effects result in yield losse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peanut stunting may be observed following applications of paraquat tank mixes evaluated in this study, but it is unlikely these effects result in yield loss”
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See all 7 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.