Abstract
Studies on weed management systems with bromoxynil-resistant, glyphosate-resistant, and nontransgenic cotton cultivars in a no-tillage environment were evaluated in North Carolina and Tennessee in 1997 and 1998. All weed management systems in nontransgenic and bromoxynil-resistant cotton controlled sicklepod 72 to 78%, whereas sicklepod was controlled at least 94% in glyphosate-resistant cotton. Entireleaf and pitted morningglory, smooth pigweed, and common cocklebur were controlled at least 92% with all management systems. Fiber quality was also measured in Tennessee. Micronaire and fiber strength ranged from 4.35 to 4.55 units and 28.6 to 30.1 g/tex, respectively, in bromoxynil-resistant and glyphosate-resistant cultivars that received postemergence over-the-top (POT) herbicides. Harvest trash content ranged from 0.80 to 1.15% in systems where POT and late postemergence–directed (LAYBY) herbicides were used and was 1.65% where multiple glyphosate applications were used with no LAYBY herbicides. Cotton lint yield and net returns were generally highest in systems that included bromoxynil or pyrithiobac POT followed by cyanazine plus MSMA LAYBY or multiple glyphosate treatments where no LAYBY herbicides were used.Nomenclature: Bromoxynil; cyanazine; glyphosate; MSMA; pyrithiobac; common cocklebur, Xanthium strumarium L. #3 XANST; entireleaf morningglory, Ipomoea hederacea var. integriuscula Gray # IPOHG; pitted morningglory, Ipomoea lacunosa L. # IPOLA; sicklepod, Senna obtusifolia (L.) Irwin and Barnaby # CASOB; smooth pigweed, Amaranthus hybridus L. # AMACH; cotton, Gossypium hirsutum L. ‘Stoneville 474’, ‘Stoneville BXN 47’, ‘Deltapine 5415RR’, ‘Paymaster 1220RR’.Additional index words: Color grade, extraneous material, fiber length, fiber strength, fiber uniformity, harvest trash, high-volume instrumentation, gin turn out, leaf grade, micronaire, staple length.Abbreviations: ASN, as needed; LAYBY, late postemergence–directed; fb; followed by; PDS, postemergence-directed spray; PRE, preemergence; POT, postemergence over-the-top.
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Claims 9
Claim · model-written summary
Nontransgenic and bromoxynil-resistant cotton systems controlled sicklepod by 72 to 78%.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- weed management systemse0
- Interactor
- sicklepode0weed
- Outcome
- sicklepode0
- Direction
- controllede0
- Value
- 72 to 78%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All weed management systems in nontransgenic and bromoxynil-resistant cotton controlled sicklepod 72 to 78%”
Claim · model-written summary
Glyphosate-resistant cotton systems controlled sicklepod at least 94%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- glyphosate-resistant cottone0
- Interactor
- sicklepode0weed
- Outcome
- sicklepode0
- Direction
- controllede0
- Value
- at least 94%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sicklepod was controlled at least 94% in glyphosate-resistant cotton”
Claim · model-written summary
All management systems controlled entireleaf and pitted morningglory, smooth pigweed and common cocklebur at least 92%.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- all management systemse0
- Interactor
- smooth pigweed
Amaranthus hybriduse0weed - Second interactor
- common cocklebure0weed
- Outcome
- Entireleaf and pitted morningglory, smooth pigweed, and common cocklebure0
- Direction
- controllede0
- Value
- at least 92%e0
- Qualifier
- Entireleaf and pitted morningglorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Entireleaf and pitted morningglory, smooth pigweed, and common cocklebur were controlled at least 92% with all management systems”
e1“cotton cultivars in a no-tillage environment”
Claim · model-written summary
Micronaire ranged from 4.35 to 4.55 units in resistant cultivars receiving POT herbicides.
- Taxon
- cottonGossypium hirsutume1
- Material
- bromoxynil-resistant and glyphosate-resistant cultivarse0
- Treatment
- postemergence over-the-top (POT) herbicidese0
- Outcome
- Micronairee0
- Value
- 4.35 to 4.55 unitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Micronaire and fiber strength ranged from 4.35 to 4.55 units and 28.6 to 30.1 g/tex, respectively, in bromoxynil-resistant and glyphosate-resistant cultivars that received postemergence over-the-top (POT) herbicides”
e1“cotton cultivars”
Claim · model-written summary
Fiber strength ranged from 28.6 to 30.1 g/tex in resistant cultivars receiving POT herbicides.
- Taxon
- cottonGossypium hirsutume1
- Material
- bromoxynil-resistant and glyphosate-resistant cultivarse0
- Treatment
- postemergence over-the-top (POT) herbicidese0
- Outcome
- fiber strengthe0
- Value
- 28.6 to 30.1 g/texe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Micronaire and fiber strength ranged from 4.35 to 4.55 units and 28.6 to 30.1 g/tex, respectively, in bromoxynil-resistant and glyphosate-resistant cultivars that received postemergence over-the-top (POT) herbicides”
e1“cotton cultivars”
Claim · model-written summary
Harvest trash was 0.80 to 1.15% with POT and LAYBY herbicides.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- POT and late postemergence–directed (LAYBY) herbicidese0
- Outcome
- Harvest trash contente0
- Value
- 0.80 to 1.15%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvest trash content ranged from 0.80 to 1.15% in systems where POT and late postemergence–directed (LAYBY) herbicides were used”
e1“cotton cultivars”
Claim · model-written summary
Harvest trash was 1.65% under multiple glyphosate applications without LAYBY herbicides.
- Taxon
- cottonGossypium hirsutume2
- Treatment
- multiple glyphosate applicationse0
- Outcome
- Harvest trash contente1
- Value
- 1.65%e0
- Qualifier
- no LAYBY herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was 1.65% where multiple glyphosate applications were used with no LAYBY herbicides”
e1“Harvest trash content ranged”
e2“cotton cultivars”
Claim · model-written summary
Cotton lint yield and net returns were generally highest with bromoxynil or pyrithiobac POT followed by cyanazine plus MSMA LAYBY.
- Taxon
- CottonGossypium hirsutume0
- Treatment
- bromoxynil or pyrithiobac POT followed by cyanazine plus MSMA LAYBYe0
- Outcome
- lint yield and net returnse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton lint yield and net returns were generally highest in systems that included bromoxynil or pyrithiobac POT followed by cyanazine plus MSMA LAYBY or multiple glyphosate treatments where no LAYBY herbicides were used”
Claim · model-written summary
Cotton lint yield and net returns were generally highest with multiple glyphosate treatments without LAYBY herbicides.
- Taxon
- CottonGossypium hirsutume0
- Treatment
- multiple glyphosate treatmentse0
- Outcome
- lint yield and net returnse0
- Direction
- higheste0
- Qualifier
- no LAYBY herbicidese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton lint yield and net returns were generally highest in systems that included bromoxynil or pyrithiobac POT followed by cyanazine plus MSMA LAYBY or multiple glyphosate treatments where no LAYBY herbicides were used”
The same questions in other papers
glyphosate · quality: grain · Gossypium hirsutum (cotton)Results differ
6 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
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See all 14 papers →herbicide · quality: grain · Gossypium hirsutum (cotton)Positive and negative results
9 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
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.