Abstract
Wide-spread planting of glyphosate-resistant (GR) crops in the United States and glyphosate patent expiration has led to a proliferation of glyphosate products. Growers have questioned their advisors on efficacy and crop tolerance of the many products available. Field experiments were conducted to evaluate eight glyphosate products in 2002 and ten in 2003, representing isopropylamine, diammonium, and potassium salts, applied POST and postemergence-directed (PDIR) at 630 and 1,680 g ae/ha for GR corn and GR cotton tolerance and weed control. There were no differences among products for control of six annual grass and 10 annual broadleaf weed species. No injury to corn from any glyphosate product at 630 or 1,680 g/ha or to cotton from 630 g/ha was noted at any of seven locations. ClearOut 41 Plus™, an isopropylamine salt of glyphosate, and Roundup WEATHERMAX™, a potassium salt of glyphosate, applied POST at 1,680 g/ha injured cotton 27 to 30% and 10 to 17%, respectively, at 3 of 7 locations. No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™. No differences were noted among glyphosate products or between rates for corn or cotton yield or cotton fiber properties.Nomenclature: Glyphosate; corn, Zea mays L. ‘DK687’, ‘DKC 69-71’; cotton, Gossypium hirsutum L. ‘DP 458 B/RR’, ‘ST 4892BR’.Additional index words: ClearOut 41 Plus™, crop tolerance, diammonium salt of glyphosate, Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, isopropylamine salt of glyphosate, potassium salt of glyphosate, Roundup Original™, Roundup UltraMAX®, Roundup WEATHERMAX™, Touchdown®, Touchdown Total™, weed control.Abbreviations: EPSPS, 5-enolpyruvylshikimate-3-phosphate synthase; GR, glyphosate-resistant; PDIR, postemergence-directed; PEP, phosphoenolpyruvate; WAP, wk after postemergence application; WAP1, wk after first postemergence application; WAP2, wk after second postemergence application; WAPD, wk after postemergence-directed application.
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Claims 16
Claim · model-written summary
Glyphosate products did not differ in control of six annual grass weed species.
Verbatim
e0“There were no differences among products for control of six annual grass and 10 annual broadleaf weed species.”
e1“eight glyphosate products”
Claim · model-written summary
Glyphosate products did not differ in control of 10 annual broadleaf weed species.
Verbatim
e0“There were no differences among products for control of six annual grass and 10 annual broadleaf weed species.”
e1“eight glyphosate products”
Claim · model-written summary
No glyphosate product injured corn at 630 or 1,680 g/ha across seven locations.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- any glyphosate product at 630 or 1,680 g/hae0
- Outcome
- injury to corne0
- Qualifier
- seven locationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No injury to corn from any glyphosate product at 630 or 1,680 g/ha or to cotton from 630 g/ha was noted at any of seven locations.”
Claim · model-written summary
Glyphosate at 630 g/ha did not injure cotton across seven locations.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- 630 g/hae0
- Outcome
- injurye0
- Qualifier
- seven locationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No injury to corn from any glyphosate product at 630 or 1,680 g/ha or to cotton from 630 g/ha was noted at any of seven locations.”
Claim · model-written summary
ClearOut 41 Plus™ POST at 1,680 g/ha injured cotton 27 to 30% at three of seven locations.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- ClearOut 41 Plus™e0
- Outcome
- injured cottone0
- Direction
- injurede0
- Value
- 27 to 30%e0
- Qualifier
- applied POST at 1,680 g/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ClearOut 41 Plus™, an isopropylamine salt of glyphosate, and Roundup WEATHERMAX™, a potassium salt of glyphosate, applied POST at 1,680 g/ha injured cotton 27 to 30% and 10 to 17%, respectively, at 3 of 7 locations.”
Claim · model-written summary
Roundup WEATHERMAX™ POST at 1,680 g/ha injured cotton 10 to 17% at three of seven locations.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Roundup WEATHERMAX™e0
- Outcome
- injured cottone0
- Direction
- injurede0
- Value
- 10 to 17%e0
- Qualifier
- applied POST at 1,680 g/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ClearOut 41 Plus™, an isopropylamine salt of glyphosate, and Roundup WEATHERMAX™, a potassium salt of glyphosate, applied POST at 1,680 g/ha injured cotton 27 to 30% and 10 to 17%, respectively, at 3 of 7 locations.”
Claim · model-written summary
Glyfos® caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Glyfos®e0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Glyfos® X-TRA caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Glyfos® X-TRAe0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Glyphomax™ caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Glyphomax™e0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Gly Star™ Original caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Gly Star™ Originale0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Roundup Original™ caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Roundup Original™e0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Roundup UltraMAX® caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Roundup UltraMAX®e0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Touchdown® caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Touchdown®e0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Touchdown Total™ caused no observed cotton injury.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Touchdown Total™e0
- Outcome
- cotton injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No cotton injury was noted with Glyfos®, Glyfos® X-TRA, Glyphomax™, Gly Star™ Original, Roundup Original™, Roundup UltraMAX®, Touchdown®, or Touchdown Total™.”
Claim · model-written summary
Corn yield did not differ among glyphosate products or rates.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- glyphosate productse0
- Outcome
- yielde0
- Direction
- No differencese0
- Comparator
- ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No differences were noted among glyphosate products or between rates for corn or cotton yield or cotton fiber properties.”
Claim · model-written summary
Cotton yield and fiber properties did not differ among glyphosate products or rates.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- glyphosate productse0
- Outcome
- cotton yield or cotton fiber propertiese0
- Direction
- No differencese0
- Comparator
- ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No differences were noted among glyphosate products or between rates for corn or cotton yield or cotton fiber properties.”
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See all 18 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.