Abstract
The adoption of genetically engineered crops in the United States has increased dramatically over the past decade. Differences in agronomic characteristics and protein expression between genetically engineered plants and their naturally recombinant non-genetically modified (GM) counterparts are not well-understood. Experimental field plots were established in the spring of 2005 near Brookings, SD with 18 different commonly used corn hybrids including three conventional hybrids and their corresponding transgenic modifications. Specific research objectives were to evaluate in a side by side comparison, the impact of the genetic modifications on agronomic characteristics. Results show that glyphosate or insect resistance resulting from genetic modification, in the absence of significant insect pest or weed pressure and glyphosate application, were not likely to significantly alter productivity or nutrient composition of corn residue or grain. No significant differences were observed among the hybrids in average grain yield or above-ground biomass over the three years of the experiment.
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Claims 2
Claim · model-written summary
Glyphosate or insect resistance from genetic modification was not likely to significantly alter productivity or nutrient composition of corn residue or grain when insect pest or weed pressure and glyphosate application were absent.
- Taxon
- corn
Zea mays subsp. mayse3 - Treatment
- glyphosate or insect resistance resulting from genetic modificatione3
- Outcome
- productivity or nutrient composition of corn residue or graine3
- Direction
- not likely to significantly altere3
- Qualifier
- in the absence of significant insect pest or weed pressure and glyphosate applicatione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“glyphosate or insect resistance resulting from genetic modification, in the absence of significant insect pest or weed pressure and glyphosate application, were not likely to significantly alter productivity or nutrient composition of corn residue or grain”
Claim · model-written summary
Average grain yield and above-ground biomass did not differ significantly among the corn hybrids over three years.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- average grain yield or above-ground biomasse2
- Setting
- near Brookings, SDe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experimental field plots were established in the spring of 2005 near Brookings, SD with 18 different commonly used corn hybrids”
e2“No significant differences were observed among the hybrids in average grain yield or above-ground biomass over the three years of the experiment”
The same questions in other papers
glyphosate · quality: general · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- no effect
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.