Abstract
S ummary The toxicity of glyphosate to barley seedlings when applied to the entire root system in water culture was such that at pH 7.5 the minimum lethal dose was around 15 mg l −1 ; 3 mg l −1 caused a 23 % decrease in shoot dry wt. Barley and wheat seedlings did not differ significantly in susceptibility. The growth of seminal roots with a short (5 mm) length of the tip exposed to 500 mg l −1 glyphosate in culture solution was decreased by about 50%. Unless a large amount of the root system of an establishing crop came into contact with the rhizomes of couch grass which had been treated with glyphosate, herbicide release by the rhizomes seems likely to be unimportant.
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Claims 5
Claim · model-written summary
Glyphosate applied to the whole root system of barley seedlings in water culture at pH 7.5 had a minimum lethal dose of about 15 mg l −1.
- Taxon
- barley seedlings
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- applied to the entire root system in water culturee0
- Outcome
- minimum lethal dosee1
- Value
- around 15 mg l −1e1
- Qualifier
- at pH 7.5e1
- Setting
- water culturee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“toxicity of glyphosate to barley seedlings when applied to the entire root system in water culture”
e1“at pH 7.5 the minimum lethal dose was around 15 mg l −1”
Claim · model-written summary
Glyphosate at 3 mg l −1 decreased shoot dry weight of barley seedlings by 23%.
- Taxon
- barley seedlingsHordeum vulgaree0
- Organ / stage
- shoote2
- Treatment
- 3 mg l −1e2
- Outcome
- shoot dry wte2
- Direction
- decreasee2
- Value
- 23 %e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“toxicity of glyphosate to barley seedlings when applied to the entire root system in water culture”
e2“3 mg l −1 caused a 23 % decrease in shoot dry wt”
Claim · model-written summary
Barley and wheat seedlings did not differ significantly in susceptibility to glyphosate.
- Taxon
- BarleyHordeum vulgaree3
- Treatment
- glyphosatee0
- Outcome
- susceptibilitye3
- Direction
- did not differe3
- Comparator
- wheat seedlingse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“toxicity of glyphosate to barley seedlings when applied to the entire root system in water culture”
e3“Barley and wheat seedlings did not differ significantly in susceptibility”
Claim · model-written summary
Growth of seminal roots with a short root-tip exposed to 500 mg l −1 glyphosate in culture solution decreased by about 50%.
- Taxon
- barley seedlingsHordeum vulgaree0
- Organ / stage
- seminal rootse4
- Treatment
- 500 mg l −1 glyphosate in culture solutione4
- Outcome
- growth of seminal rootse4
- Direction
- decreasede4
- Value
- about 50%e4
- Qualifier
- short (5 mm) length of the tipe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“toxicity of glyphosate to barley seedlings when applied to the entire root system in water culture”
e4“The growth of seminal roots with a short (5 mm) length of the tip exposed to 500 mg l −1 glyphosate in culture solution was decreased by about 50%”
Claim · model-written summary
Herbicide release by couch grass rhizomes is likely unimportant to an establishing crop unless a large amount of its root system contacts treated rhizomes.
Verbatim
e0“Unless a large amount of the root system of an establishing crop came into contact with the rhizomes of couch grass which had been treated with glyphosate, herbicide release by the rhizomes seems likely to be unimportant”
The same questions in other papers
glyphosate · growth · Hordeum vulgare (barley)Results differ
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
2 papers more in this group
See all 6 papers →glyphosate · disease · Hordeum vulgare (barley)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.