Abstract
The current study was initiated to ascertain distribution of elements in various parts of alfalfa (Medicago sativa L.) and whether differential accumulation occurred when a fertilizer was applied. Rows of Vernal alfalfa were fertilized in late April with a mixture of K 2 SO 4 , KCl, K 2 HPO 4 , MgSO 4 , MnSO 4 , Na 2 B 4 O 7 , CuSO 4 , and ZnSO 4 . Control rows were not fertilized. Shoots were removed at late bud and separated by 10-cm segments into leaves and stems. Upper 15 cm of roots also were sampled. No significant difference existed between unfertilized and fertilized plants in dry weights of comparable plant parts, except for significantly more leaves on next-to-bottom segment of fertilized shoots. Total leaves at both fertility levels contained higher concentrations of S, P, Mg, Ca, Zn, Mn, B, N, and Cu than total stems or roots. Total stems were highest in K and Cl. Total roots at both fertility levels contained higher concentrations of Na, Fe, and Al than total stems or leaves; roots contained no measurable Cl. In shoot segments, largest differences in concentrations due to fertilization occurred for K and S in upper stem segments, for Cl in lower stem and lower leaf segments, for Zn in lowest stem segment and stubble, for Mn in middle-to-lower stem segments and stubble, and for B in middle stem segment.
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Claims 10
Claim · model-written summary
Fertilized and unfertilized alfalfa had no significant difference in comparable part dry weights except one leaf segment.
- Taxon
- ALFALFA
Medicago sativat0 - Treatment
- fertilizede0
- Outcome
- dry weights of comparable plant partse0
- Direction
- No significant differencee0
- Comparator
- unfertilizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant difference existed between unfertilized and fertilized plants in dry weights of comparable plant parts”
t0“ALFALFA”
Claim · model-written summary
Fertilized shoots had significantly more leaves on the next-to-bottom segment.
- Taxon
- ALFALFAMedicago sativat0
- Treatment
- fertilizede0
- Outcome
- leaves on next-to-bottom segmente0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly more leaves on next-to-bottom segment of fertilized shoots”
t0“ALFALFA”
Claim · model-written summary
Leaves contained higher concentrations of S, P, and Mg than stems or roots at both fertility levels.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- Total leavese0
- Outcome
- concentrations of S, P, Mge0
- Direction
- highere0
- Comparator
- total stems or rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total leaves at both fertility levels contained higher concentrations of S, P, Mg, Ca, Zn, Mn, B, N, and Cu than total stems or roots”
t0“ALFALFA”
Claim · model-written summary
Leaves contained higher concentrations of Ca, Zn, and Mn than stems or roots.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- Total leavese0
- Outcome
- Ca, Zn, Mne0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total leaves at both fertility levels contained higher concentrations of S, P, Mg, Ca, Zn, Mn, B, N, and Cu than total stems or roots”
t0“ALFALFA”
Claim · model-written summary
Leaves contained higher concentrations of B, N, and Cu than stems or roots.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- Total leavese0
- Outcome
- B, N, and Cue0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total leaves at both fertility levels contained higher concentrations of S, P, Mg, Ca, Zn, Mn, B, N, and Cu than total stems or roots”
t0“ALFALFA”
Claim · model-written summary
Total stems had the highest K and Cl concentrations.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- Total stemse0
- Outcome
- K and Cle0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total stems were highest in K and Cl”
t0“ALFALFA”
Claim · model-written summary
Roots contained higher concentrations of Na, Fe, and Al than stems or leaves.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- Total rootse0
- Outcome
- concentrations of Na, Fe, and Ale0
- Direction
- highere0
- Comparator
- total stems or leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total roots at both fertility levels contained higher concentrations of Na, Fe, and Al than total stems or leaves”
t0“ALFALFA”
Claim · model-written summary
Roots had no measurable Cl.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- rootse0
- Outcome
- no measurable Cle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“roots contained no measurable Cl”
t0“ALFALFA”
Claim · model-written summary
Fertilization caused the largest K and S concentration differences in upper stem segments.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- upper stem segmentse0
- Treatment
- fertilizatione0
- Outcome
- concentrationse0
- Direction
- largest differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“largest differences in concentrations due to fertilization occurred for K and S in upper stem segments”
t0“ALFALFA”
Claim · model-written summary
The largest fertilization-related Cl differences occurred in lower stem and leaf segments.
- Taxon
- ALFALFAMedicago sativat0
- Organ / stage
- lower stem and lower leaf segmentse0
- Outcome
- Cle0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for Cl in lower stem and lower leaf segments”
t0“ALFALFA”
The same questions in other papers
fertilization · growth · Medicago sativa (alfalfa)Results differ
17 papers in the same direction as this paper · 71 in the opposite direction
- positive
- positive
- positive
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See all 89 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.