Abstract
Abstract A greenhouse experiment was conducted to compare MnSO4 and MnEDTA as Mn sources. Four soil‐applied rates of each source were applied to two Coastal Plain soils, a Leefield s (pH 6.3) and an Alapaha is (pH 7.0). Plants were grown for 40 days and dry tissue weights were recorded along with leaf contents of Mn, Zn, Fe and Cu. The same ions were extracted from the soil with DTPA. The chelate source caused no differences in either extractable soil Mn or plant Mn between soils or among rates even when added at its highest rate of 2 μgMn/g. The sulfate source increased extractable soil Mn and plant Mn over the various rates but more so for the Alapaha soil than for the Leefield. Plant weights were not different between sources except on the averages for the Leefield soil. However, for the Leefield soil and the sulfate source, plant weights were lower for the check than for intermediate Mn rates due to Mn deficiency and lower for the high Ma rate (50 μg/g) presumably due to toxicity. A correlation coefficient of 0.866** was obtained for soil‐extracted Mn versus plant Mn concentration indicating that the DTPA was a good extractant for these two soils. High correlations between plant and soil Mn versus plant and soil Zn, Fe, and Cu for the chelate source showed that the MnEDTA affected metal ion availabilities other than just Mn. It was concluded that the MnSO4 was the better source at the rates used and that for these soils the best rate was S μgMn/g applied to the soil.
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Claims 11
Claim · model-written summary
MnEDTA did not alter soil extractable Mn or plant Mn across soils or rates.
- Taxon
- soybeans
Glycine maxt0 - Treatment
- chelate sourcee0
- Outcome
- plant Mne0
- Direction
- no differencese0
- Qualifier
- 2 μgMn/ge0
- Comparator
- between soils or among ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“The chelate source caused no differences in either extractable soil Mn or plant Mn between soils or among rates even when added at its highest rate of 2 μgMn/g.”
Claim · model-written summary
MnSO4 increased soil extractable Mn across rates, more on Alapaha soil.
- Taxon
- soybeansGlycine maxt0
- Treatment
- sulfate sourcee0
- Outcome
- extractable soil Mne0
- Direction
- increasede0
- Comparator
- Leefielde0
- Setting
- Alapaha soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“The sulfate source increased extractable soil Mn and plant Mn over the various rates but more so for the Alapaha soil than for the Leefield.”
Claim · model-written summary
MnSO4 increased plant Mn across rates, more on Alapaha soil.
- Taxon
- soybeansGlycine maxt0
- Treatment
- sulfate sourcee0
- Outcome
- plant Mne0
- Direction
- increasede0
- Comparator
- Leefielde0
- Setting
- Alapaha soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“The sulfate source increased extractable soil Mn and plant Mn over the various rates but more so for the Alapaha soil than for the Leefield.”
Claim · model-written summary
Plant weights generally did not differ between Mn sources.
- Taxon
- soybeansGlycine maxt0
- Treatment
- sourcese0
- Outcome
- Plant weightse0
- Direction
- not differente0
- Comparator
- between sourcese0
- Setting
- Leefield soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“Plant weights were not different between sources except on the averages for the Leefield soil.”
Claim · model-written summary
On Leefield soil with sulfate, check plants weighed less than those at intermediate Mn rates.
- Taxon
- soybeansGlycine maxt0
- Treatment
- checke0
- Outcome
- plant weightse0
- Direction
- lowere0
- Qualifier
- due to Mn deficiencye0
- Comparator
- intermediate Mn ratese0
- Setting
- Leefield soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“for the Leefield soil and the sulfate source, plant weights were lower for the check than for intermediate Mn rates due to Mn deficiency”
Claim · model-written summary
The high Mn rate lowered plant weights, presumably through toxicity.
- Taxon
- soybeansGlycine maxt0
- Treatment
- high Ma rate (50 μg/g)e0
- Outcome
- plant weightse0
- Direction
- lowere0
- Qualifier
- presumably due to toxicitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“plant weights were lower for the check than for intermediate Mn rates due to Mn deficiency and lower for the high Ma rate (50 μg/g) presumably due to toxicity.”
Claim · model-written summary
Soil extracted Mn correlated with plant Mn concentration.
- Taxon
- soybeansGlycine maxt0
- Outcome
- plant Mn concentratione0
- Value
- 0.866**e0
- Comparator
- soil‐extracted Mne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“A correlation coefficient of 0.866** was obtained for soil‐extracted Mn versus plant Mn concentration”
Claim · model-written summary
DTPA was judged a good extractant for these soils.
- Taxon
- soybeansGlycine maxt0
- Outcome
- good extractante0
- Value
- 0.866**e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“A correlation coefficient of 0.866** was obtained for soil‐extracted Mn versus plant Mn concentration indicating that the DTPA was a good extractant for these two soils.”
Claim · model-written summary
MnEDTA affected availability of Zn, Fe and Cu as well as Mn.
- Taxon
- soybeansGlycine maxt0
- Treatment
- MnEDTAe0
- Outcome
- metal ion availabilitiese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“High correlations between plant and soil Mn versus plant and soil Zn, Fe, and Cu for the chelate source showed that the MnEDTA affected metal ion availabilities other than just Mn.”
Claim · model-written summary
The authors favored MnSO4 at the tested rates.
- Taxon
- soybeansGlycine maxt0
- Outcome
- MnSO4 was the better source at the rates usede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“It was concluded that the MnSO4 was the better source at the rates used”
Claim · model-written summary
The authors identified S μgMn/g as the best soil application rate.
- Taxon
- soybeansGlycine maxt0
- Outcome
- S μgMn/g applied to the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybeans”
e0“for these soils the best rate was S μgMn/g applied to the soil.”
The same questions in other papers
sulfate · nutrient: content · Glycine max (soybean)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.