Abstract
Glyphosate‐resistant (GR) soybean [ Glycine max (L.) Merr.] is widely produced and provides many benefits to production agriculture, however, recent reports suggest that GR soybean genetics may result in reduced Mn uptake and increased response to Mn fertilization. The objective of this research was to determine response of GR and conventional (CV) soybean near‐isolines to Mn fertilization. The soybean near‐isoline pair KS4202 and K4202RR was planted at three locations and near‐isoline pair KS4602N and KS4602NRR was planted at two locations in a split‐block field study. Manganese treatments consisted of soil‐applied MnSO 4 at 0, 2.8, 5.6, and 8.4 kg Mn ha −1 and foliar applied Mn‐glucoheptonate at 0.22 and 0.45 kg Mn ha −1 Leaf tissue was analyzed for Mn at R1, R3, and R6 growth stages and seed was analyzed for Mn at harvest. Manganese concentrations in leaf tissue were above the critical value and were not affected by GR genetics at any location or growth stage. However, there were yield responses to Mn applications at three of the five locations. KS4202RR soybean yield increased by 800 and 275 kg ha −1 with increasing Mn application rate at two locations when the near‐isoline KS4202 yield did not increase. In contrast, at the third responsive location KS4602NRR did not respond to Mn application when the near‐isoline KS4602N yield increased by 450 kg ha −1 These results indicate that although soybean response to Mn is influenced by genetics, neither the Mn uptake nor the Mn responsiveness were conclusively affected by glyphosate‐resistance in soybean.
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Claims 9
Claim · model-written summary
Leaf manganese concentrations were above the critical value.
- Taxon
- soybean
Glycine maxt0 - Organ / stage
- leaf tissuee0
- Outcome
- Manganese concentrationse0
- Direction
- above the critical valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manganese concentrations in leaf tissue were above the critical value”
t0“soybean”
Claim · model-written summary
Glyphosate-resistant genetics did not affect leaf manganese concentration at any location or growth stage.
- Taxon
- soybeanGlycine maxt0
- Material
- GR geneticse0
- Outcome
- Manganese concentrations in leaf tissuee0
- Direction
- were not affectede0
- Qualifier
- at any location or growth stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manganese concentrations in leaf tissue were above the critical value and were not affected by GR genetics at any location or growth stage.”
t0“soybean”
Claim · model-written summary
Yield responded to manganese application at three of five locations.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Mn applicationse0
- Outcome
- yield responsese0
- Value
- three of the five locationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were yield responses to Mn applications at three of the five locations.”
t0“soybean”
Claim · model-written summary
KS4202RR yield rose by 800 kg ha −1 with increasing manganese at one location while KS4202 did not increase.
- Taxon
- soybeanGlycine maxe0
- Material
- KS4202RRe0
- Treatment
- increasing Mn application ratee0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 800 and 275 kg ha −1e0
- Comparator
- KS4202e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“KS4202RR soybean yield increased by 800 and 275 kg ha −1 with increasing Mn application rate at two locations when the near‐isoline KS4202 yield did not increase.”
Claim · model-written summary
KS4202RR yield rose by 275 kg ha −1 with increasing manganese at another location while KS4202 did not increase.
- Taxon
- soybeanGlycine maxe0
- Material
- KS4202RRe0
- Treatment
- increasing Mn application ratee0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 275 kg ha −1e0
- Comparator
- KS4202e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“KS4202RR soybean yield increased by 800 and 275 kg ha −1 with increasing Mn application rate at two locations when the near‐isoline KS4202 yield did not increase.”
Claim · model-written summary
KS4602NRR did not respond to manganese application at the third responsive location.
- Taxon
- soybeanGlycine maxt0
- Material
- KS4602NRRe0
- Treatment
- Mn applicatione0
- Outcome
- KS4602NRR did not responde0
- Direction
- did not responde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the third responsive location KS4602NRR did not respond to Mn application when the near‐isoline KS4602N yield increased by 450 kg ha −1”
t0“soybean”
Claim · model-written summary
KS4602N yield increased by 450 kg ha −1 with manganese application at the third responsive location.
- Taxon
- soybeanGlycine maxt0
- Material
- KS4602Ne0
- Treatment
- Mn applicatione0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 450 kg ha −1e0
- Comparator
- KS4602NRRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the third responsive location KS4602NRR did not respond to Mn application when the near‐isoline KS4602N yield increased by 450 kg ha −1”
t0“soybean”
Claim · model-written summary
Soybean response to manganese was influenced by genetics.
- Taxon
- soybeanGlycine maxe0
- Material
- geneticse0
- Outcome
- response to Mne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean response to Mn is influenced by genetics”
Claim · model-written summary
Glyphosate resistance did not conclusively affect manganese uptake or responsiveness.
- Taxon
- soybeanGlycine maxe0
- Material
- glyphosate‐resistancee0
- Outcome
- Mn uptake nor the Mn responsivenesse0
- Direction
- were conclusively affectede0
- Qualifier
- neithere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither the Mn uptake nor the Mn responsiveness were conclusively affected by glyphosate‐resistance in soybean”
The same questions in other papers
manganese atom · yield · Glycine max (soybean)Results differ
34 papers in the same direction as this paper · 10 in the opposite direction
- no effect
- no effect
- positive
41 papers more in this group
See all 45 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.