Abstract
Controversy continues to exist regarding whether the transgene for glyphosate resistance (GR) and/or glyphosate applied to GR crops adversely affect plant mineral content. Field studies were conducted in 2013 and 2014 in Stoneville, MS and Urbana, IL to examine this issue in maize. At each location, the experiment was conducted in fields with no history of glyphosate application and fields with several years of glyphosate use preceding the study. Neither glyphosate nor the GR transgene affected yield or mineral content of leaves or seed, except for occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environments. Glyphosate and AMPA (aminomethylphosphonic acid), a main degradation product of glyphosate, were found in leaves from treated plants, but little or no glyphosate and no AMPA was found in maize seeds. These results show that the GR transgene and glyphosate application, whether used for a single year or several years, have no deleterious effect on mineral nutrition or yield of GR maize.
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 8
Claim · model-written summary
Glyphosate did not affect maize yield, aside from occasional inconsistent effects.
- Treatment
- glyphosatee0
- Outcome
- yielde0
- Direction
- Neither glyphosate nor the GR transgene affectede0
- Qualifier
- occasional (<5%) significant effectse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither glyphosate nor the GR transgene affected yield or mineral content of leaves or seed, except for occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environments.”
t0“Maize”
Claim · model-written summary
The GR transgene did not affect maize yield, aside from occasional inconsistent effects.
- Treatment
- GR transgenee0
- Outcome
- yielde0
- Direction
- Neither glyphosate nor the GR transgene affectede0
- Qualifier
- occasional (<5%) significant effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither glyphosate nor the GR transgene affected yield or mineral content of leaves or seed, except for occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environments.”
t0“Maize”
Claim · model-written summary
glyphosate did not consistently affect mineral content of maize leaves or seed.
- Treatment
- glyphosatee0
- Outcome
- mineral content of leaves or seede0
- Direction
- Neither glyphosate nor the GR transgene affectede0
- Qualifier
- occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither glyphosate nor the GR transgene affected yield or mineral content of leaves or seed, except for occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environments.”
t0“Maize”
Claim · model-written summary
GR transgene did not consistently affect mineral content of maize leaves or seed.
- Treatment
- GR transgenee0
- Outcome
- mineral content of leaves or seede0
- Direction
- Neither glyphosate nor the GR transgene affectede0
- Qualifier
- occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither glyphosate nor the GR transgene affected yield or mineral content of leaves or seed, except for occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environments.”
t0“Maize”
Claim · model-written summary
Glyphosate was found in leaves of treated maize.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate and AMPA (aminomethylphosphonic acid), a main degradation product of glyphosate, were found in leaves from treated plants”
t0“Maize”
Claim · model-written summary
AMPA was found in leaves of treated maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate and AMPA (aminomethylphosphonic acid), a main degradation product of glyphosate, were found in leaves from treated plants”
t0“Maize”
Claim · model-written summary
Little or no glyphosate was found in maize seeds.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“little or no glyphosate and no AMPA was found in maize seeds”
Claim · model-written summary
No AMPA was found in maize seeds.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“little or no glyphosate and no AMPA was found in maize seeds”
The same questions in other papers
glyphosate · yield · Zea mays (maize)Results differ
34 papers in the same direction as this paper · 42 in the opposite direction
- positive
- no effect
- no effect
73 papers more in this group
See all 77 papers →glyphosate · nutrient: content · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
See all 10 papers →transgenic · nutrient: content · Zea mays (maize)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- no effect
1 paper more in this group
See all 5 papers →transgenic · yield · Zea mays (maize)Positive and negative results
17 papers in the same direction as this paper · 51 in the opposite direction
- positive
- positive
- positive
65 papers more in this group
See all 69 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.