Abstract
During 1997, the first year of widespread use of glyphosate (N-[phosphonomethyl]glycine) on Roundup Ready (RR) soybean [Glycine max (L.) Merr.] a severe sudden death syndrome (SDS) epidemic occurred and several RR cultivars were affected. Effects of glyphosate on colonization of soybean root by Fusarium solani (Mart.) Sacc f. sp. glycines (Fsg) and SDS were evaluated. Five RR cultivar pairs that contrasted for SDS resistance from maturity groups (MG) II to VI were evaluated with and without glyphosate application. The MG II and III cultivars were evaluated near Bloomington, Pontiac, and Mahomet in central Illinois and the MG IV, V, and VI cultivars were evaluated near Harrisburg, Ullin, and Valmeyer in southern Illinois. The Fsg root infection severity (IS), colony forming units per gram of root (CFU), SDS leaf scorch disease index (DX), and grain yield were determined. Across environments within each MG, there were no significant effects of glyphosate on IS, CFU, and DX. Significant differences were expected between cultivars but only observed in some MG. There was no significant effect of glyphosate on yield. Significant Glyphosate × Cultivar interactions occurred for yield in MG VI, in favor of the glyphosate sprayed subplots. In this study root colonization by Fsg and SDS leaf symptoms did not significantly increase following the application of glyphosate. Data from this study indicate that the development of SDS on RR soybean is influenced by genotype. Farmers planting RR soybean in Fsg infested fields are encouraged to select cultivars with resistance to SDS.
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Claims 5
Claim · model-written summary
Glyphosate had no significant effect on Fusarium solani root infection severity, colony counts or SDS leaf scorch index within maturity groups
- Taxon
- soybean
Glycine maxe1 - Treatment
- glyphosatee2
- Interactor
- Fusarium solani (Mart.) Sacc f. sp. glycinesFusarium phaseolie1pathogen
- Outcome
- IS, CFU, and DXe2
- Direction
- no_changeinferrede2
- Comparator
- without glyphosate applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Effects of glyphosate on colonization of soybean root by Fusarium solani (Mart.) Sacc f. sp. glycines (Fsg) and SDS were evaluated”
e2“Across environments within each MG, there were no significant effects of glyphosate on IS, CFU, and DX”
e3“with and without glyphosate application”
Claim · model-written summary
Glyphosate had no significant effect on soybean yield
- Taxon
- soybeanGlycine maxe1
- Treatment
- glyphosatee4
- Outcome
- yielde4
- Direction
- no_changeinferrede4
- Comparator
- without glyphosate applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Effects of glyphosate on colonization of soybean root by Fusarium solani (Mart.) Sacc f. sp. glycines (Fsg) and SDS were evaluated”
e3“with and without glyphosate application”
e4“There was no significant effect of glyphosate on yield”
Claim · model-written summary
Glyphosate increased yield in MG VI cultivars, in favor of glyphosate-sprayed subplots, through a significant Glyphosate × Cultivar interaction
- Taxon
- soybeanGlycine maxe1
- Material
- MG VIe5
- Treatment
- glyphosate sprayede5
- Outcome
- yielde5
- Direction
- in favore5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Effects of glyphosate on colonization of soybean root by Fusarium solani (Mart.) Sacc f. sp. glycines (Fsg) and SDS were evaluated”
e5“Significant Glyphosate × Cultivar interactions occurred for yield in MG VI, in favor of the glyphosate sprayed subplots”
Claim · model-written summary
Development of SDS on Roundup Ready soybean is influenced by genotype
Not reportedDirection
Verbatim
e6“Data from this study indicate that the development of SDS on RR soybean is influenced by genotype”
Claim · model-written summary
Farmers planting Roundup Ready soybean in Fsg-infested fields should select cultivars with resistance to SDS
Verbatim
e7“Farmers planting RR soybean in Fsg infested fields are encouraged to select cultivars with resistance to SDS”
The same questions in other papers
glyphosate · yield · Glycine max (soybean)Results differ
67 papers in the same direction as this paper · 55 in the opposite direction
- positive
- positive
- positive
119 papers more in this group
See all 123 papers →glyphosate · Fusarium phaseoli · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- positive
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.