Abstract
Studies were conducted in 2000 and 2001 to investigate responses of glyphosate-resistant cotton, glyphosate-resistant soybean, and selected weed species to postemergence applications of isopropylamine (Ipa) and diammonium (Dia) salts of glyphosate at selected rates ranging from 0.42 to 3.36 kg ae/ha. No differences were detected between either glyphosate salts or application timings for cotton injury, cotton lint yield, micronaire, fiber length, fiber strength, or fiber uniformity. In a weed-free soybean study, no differences in soybean injury occurred between early-postemergence treatments of the two glyphosate salts. Injury from late-postemergence treatments did not exceed 12% with glyphosate-Ipa or 9% with glyphosate-Dia at 3.36 kg/ha. Soybean treated with glyphosate-Ipa yielded 3,050 kg/ha, whereas soybean treated with glyphosate-Dia yielded 2,880 kg/ha, when averaged over glyphosate rate and application timing. In a soybean study that included weed control as a variable, weed control at 14 d after treatment (DAT), and soybean yield was independent of glyphosate salt. Control of common ragweed, ivyleaf morningglory, pitted morningglory, and large crabgrass at 28 DAT was similar at 0.84 kg/ha of either glyphosate salt.Nomenclature: Glyphosate; common ragweed, Ambrosia artemisiifolia L. #3 AMBEL; ivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHE; large crabgrass, Digitaria sanguinalis (L.) Scop. # DIGSA; pitted morningglory, Ipomoea lacunosa L. # IPOLA; cotton, Gossypium hirsutum L. ‘PM1218 BG/RR’; soybean, Glycine max (L.) Merr. ‘Asgrow 5401RR’.Additional index words: Diammonium, glyphosate formulation, glyphosate salt, isopropylamine.Abbreviations: DAT, days after treatment; Dia, diammonium; EPOST, early postemergence; Ipa, isopropylamine; LPOST, late postemergence; POST, postemergence; PRE, preemergence; Tms, trimethylsulfonium.
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Claims 11
Claim · model-written summary
Glyphosate salts showed no difference in cotton injury, cotton lint yield or micronaire.
- Taxon
- cotton
Gossypium hirsutume1 - Treatment
- isopropylamine (Ipa) and diammonium (Dia) salts of glyphosatee0
- Outcome
- cotton injury, cotton lint yield, micronairee1
- Direction
- no differencese1
- Comparator
- diammonium (Dia)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postemergence applications of isopropylamine (Ipa) and diammonium (Dia) salts of glyphosate”
e1“No differences were detected between either glyphosate salts or application timings for cotton injury, cotton lint yield, micronaire, fiber length, fiber strength, or fiber uniformity”
Claim · model-written summary
Glyphosate salts showed no difference in fiber length, fiber strength or fiber uniformity.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- isopropylamine (Ipa) and diammonium (Dia) salts of glyphosatee0
- Outcome
- fiber length, fiber strength, or fiber uniformitye1
- Direction
- no differencese1
- Comparator
- diammonium (Dia)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postemergence applications of isopropylamine (Ipa) and diammonium (Dia) salts of glyphosate”
e1“No differences were detected between either glyphosate salts or application timings for cotton injury, cotton lint yield, micronaire, fiber length, fiber strength, or fiber uniformity”
Claim · model-written summary
In weed-free soybean, the two glyphosate salts gave no difference in soybean injury at early postemergence.
- Taxon
- soybean
Glycine maxe2 - Treatment
- early-postemergence treatmentse2
- Outcome
- soybean injurye2
- Direction
- no differencese2
- Comparator
- the two glyphosate saltse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In a weed-free soybean study, no differences in soybean injury occurred between early-postemergence treatments of the two glyphosate salts”
Claim · model-written summary
Soybean injury from late-postemergence glyphosate-Ipa treatment did not exceed 12% at 3.36 kg/ha.
- Taxon
- soybeanGlycine maxe2
- Treatment
- glyphosate-Ipae3
- Outcome
- Injurye3
- Value
- 12%e3
- Qualifier
- did not exceede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In a weed-free soybean study, no differences in soybean injury occurred between early-postemergence treatments of the two glyphosate salts”
e3“Injury from late-postemergence treatments did not exceed 12% with glyphosate-Ipa or 9% with glyphosate-Dia at 3.36 kg/ha”
Claim · model-written summary
Soybean injury from late-postemergence glyphosate-Dia treatment did not exceed 9% at 3.36 kg/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In a weed-free soybean study, no differences in soybean injury occurred between early-postemergence treatments of the two glyphosate salts”
e3“Injury from late-postemergence treatments did not exceed 12% with glyphosate-Ipa or 9% with glyphosate-Dia at 3.36 kg/ha”
Claim · model-written summary
Soybean treated with glyphosate-Ipa yielded 3,050 kg/ha.
- Taxon
- SoybeanGlycine maxe4
- Treatment
- glyphosate-Ipae4
- Outcome
- yieldede4
- Value
- 3,050 kg/hae4
- Qualifier
- averaged over glyphosate rate and application timinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Soybean treated with glyphosate-Ipa yielded 3,050 kg/ha, whereas soybean treated with glyphosate-Dia yielded 2,880 kg/ha, when averaged over glyphosate rate and application timing”
Claim · model-written summary
Soybean treated with glyphosate-Dia yielded 2,880 kg/ha.
- Taxon
- SoybeanGlycine maxe4
- Treatment
- glyphosate-Diae4
- Outcome
- yieldede4
- Value
- 2,880 kg/hae4
- Qualifier
- averaged over glyphosate rate and application timinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Soybean treated with glyphosate-Ipa yielded 3,050 kg/ha, whereas soybean treated with glyphosate-Dia yielded 2,880 kg/ha, when averaged over glyphosate rate and application timing”
Claim · model-written summary
Weed control at 14 DAT did not depend on the glyphosate salt.
- Taxon
- soybeanGlycine maxe5
- Treatment
- glyphosate salte5
- Outcome
- weed controle5
- Direction
- independente5
- Qualifier
- at 14 d after treatment (DAT)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“weed control at 14 d after treatment (DAT), and soybean yield was independent of glyphosate salt”
Claim · model-written summary
Soybean yield was independent of the glyphosate salt.
- Taxon
- soybeanGlycine maxe5
- Treatment
- glyphosate salte5
- Outcome
- soybean yielde5
- Direction
- independente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“weed control at 14 d after treatment (DAT), and soybean yield was independent of glyphosate salt”
Claim · model-written summary
Control of common ragweed and ivyleaf morningglory at 28 DAT was similar at 0.84 kg/ha of either glyphosate salt.
- Taxon
- soybeanGlycine maxe5
- Treatment
- 0.84 kg/ha of either glyphosate salte6
- Interactor
- common ragweed
Ambrosia artemisiifoliae6weed - Second interactor
- ivyleaf morningglory
Ipomoea hederaceae6weed - Outcome
- Controle6
- Direction
- similare6
- Qualifier
- at 28 DATe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“weed control at 14 d after treatment (DAT), and soybean yield was independent of glyphosate salt”
e6“Control of common ragweed, ivyleaf morningglory, pitted morningglory, and large crabgrass at 28 DAT was similar at 0.84 kg/ha of either glyphosate salt”
Claim · model-written summary
Control of pitted morningglory and large crabgrass at 28 DAT was similar at 0.84 kg/ha of either glyphosate salt.
- Taxon
- soybeanGlycine maxe5
- Treatment
- 0.84 kg/ha of either glyphosate salte6
- Interactor
- pitted morningglorye6weed
- Second interactor
- large crabgrasse6weed
- Outcome
- Controle6
- Direction
- similare6
- Qualifier
- at 28 DATe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“weed control at 14 d after treatment (DAT), and soybean yield was independent of glyphosate salt”
e6“Control of common ragweed, ivyleaf morningglory, pitted morningglory, and large crabgrass at 28 DAT was similar at 0.84 kg/ha of either glyphosate salt”
The same questions in other papers
glyphosate · quality: grain · Gossypium hirsutum (cotton)Results differ
6 papers in the same direction as this paper · 7 in the opposite direction
- no effect
- positive
- positive
10 papers more in this group
See all 14 papers →glyphosate · crop injury · Gossypium hirsutum (cotton)Positive and negative results
13 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
14 papers more in this group
See all 18 papers →isopropylamine · crop injury · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- negative
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.