Abstract
Glyphosate-resistant giant ragweed is one of the most competitive weeds of agronomic crops in the United States. Early emergence and rapid growth rate makes giant ragweed a competitive weed early in the season and reduces crop yields. Therefore, early spring control of giant ragweed using a preplant herbicide is critical. Glufosinate is an alternative POST herbicide for weed control in glufosinate-resistant soybean. Field experiments were conducted at David City, NE, in 2012 and 2013 to evaluate the efficacy of preplant herbicides followed by glufosinate applied alone or in tank mixes for control of glyphosate-resistant giant ragweed in glufosinate-resistant soybean. Preplant treatments containing 2,4-D, flumioxazin, glufosinate, paraquat, saflufenacil, and sulfentrazone provided 79 to 99% control of giant ragweed 21 d after treatment (DAT), and subsequent application of glufosinate alone or in tank mixes resulted in 90 to 99% control at 21 DAT. Preplant application of S -metolachlor plus metribuzin or chlorimuron, flumioxazin plus thifensulfuron followed by glufosinate resulted in < 40% control of giant ragweed, and soybean yields were < 870 kg ha −1 . Although statistically comparable to several other treatments, preplant application of 2,4-D or saflufenacil tank mixes followed by glufosinate resulted in the highest level of control (> 97%) and soybean yield (2,624 to 3,378 kg ha −1 ). This study confirms that preplant herbicide options are available for control of glyphosate-resistant giant ragweed, and a follow-up application of glufosinate will provide season-long control in glufosinate-resistant soybean.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Listed preplant herbicides controlled giant ragweed by 79 to 99% at 21 DAT.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Preplant treatments containing 2,4-D, flumioxazin, glufosinate, paraquat, saflufenacil, and sulfentrazonee0
- Interactor
- giant ragweed
.jpg?width=60)
Ambrosia trifidae0weed - Outcome
- control of giant ragweede0
- Value
- 79 to 99%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Preplant treatments containing 2,4-D, flumioxazin, glufosinate, paraquat, saflufenacil, and sulfentrazone provided 79 to 99% control of giant ragweed 21 d after treatment (DAT)”
t0“Soybean”
Claim · model-written summary
Subsequent glufosinate achieved 90 to 99% control at 21 DAT.
- Taxon
- soybeanGlycine maxt0
- Treatment
- glufosinate alone or in tank mixese0
- Interactor
- giant ragweedAmbrosia trifidat1weed
- Outcome
- controle0
- Value
- 90 to 99%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsequent application of glufosinate alone or in tank mixes resulted in 90 to 99% control at 21 DAT”
t0“Soybean”
t1“Giant Ragweed”
Claim · model-written summary
The specified preplant sequence yielded under 40% giant ragweed control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- S -metolachlor plus metribuzin or chlorimuron, flumioxazin plus thifensulfuron followed by glufosinatee0
- Interactor
- giant ragweedAmbrosia trifidae0weed
- Outcome
- control of giant ragweede0
- Value
- < 40%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preplant application of S -metolachlor plus metribuzin or chlorimuron, flumioxazin plus thifensulfuron followed by glufosinate resulted in < 40% control of giant ragweed”
t0“Soybean”
Claim · model-written summary
Soybean yield under that sequence was below 870 kg ha −1.
- Taxon
- soybeanGlycine maxe0
- Outcome
- soybean yieldse0
- Value
- < 870 kg ha −1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean yields were < 870 kg ha −1”
Claim · model-written summary
The 2,4-D or saflufenacil sequence produced over 97% weed control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 2,4-D or saflufenacil tank mixes followed by glufosinatee0
- Interactor
- giant ragweedAmbrosia trifidat1weed
- Outcome
- controle0
- Direction
- higheste0
- Value
- > 97%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preplant application of 2,4-D or saflufenacil tank mixes followed by glufosinate resulted in the highest level of control (> 97%)”
t0“Soybean”
t1“Giant Ragweed”
Claim · model-written summary
That sequence yielded 2,624 to 3,378 kg ha −1 soybean.
- Taxon
- soybeanGlycine maxe0
- Outcome
- soybean yielde0
- Value
- 2,624 to 3,378 kg ha −1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean yield (2,624 to 3,378 kg ha −1)”
The same questions in other papers
metolachlor · Ambrosia trifida · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- positive
metribuzin · Ambrosia trifida · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- positive
chlorimuron · Ambrosia trifida · Glycine max (soybean)Positive and negative results
2 in the opposite direction
- positive
- positive
flumioxazin · Ambrosia trifida · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- positive
glufosinate · Ambrosia trifida · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- positive
sulfentrazone · Ambrosia trifida · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- positive
- positive
saflufenacil · Ambrosia trifida · Glycine max (soybean)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →2,4-D · Ambrosia trifida · Glycine max (soybean)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.