Abstract
Abstract Dry matter production and uptake of Zn, N, and P by corn grown in greenhouse pots were higher with (NH 4 ) 2 SO 4 than with anhydrous NH 3 or CO(NH 2 ) 2 , whether ZnSO 4 was mixed, spotplaced, or not applied. These results are largely explained by the lower soil pH associated with application of (NH 4 ) 2 SO 4 and hence, the increased availability of indigenous and applied Zn. Yields were lower when Zn was mixed, but higher when Zn was omitted or spot‐placed 4 weeks prior, as compared to treatment just prior to planting. In general, Zn and N uptake varied directly with yield and inversely with P uptake, except where growth was extremely poor due to severe Zn deficiency.
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Claims 8
Claim · model-written summary
Ammonium sulfate increased corn dry matter relative to ammonia and urea.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- (NH 4 ) 2 SO 4e0
- Outcome
- Dry matter productione0
- Direction
- highere0
- Comparator
- anhydrous NH 3 or CO(NH 2 ) 2e0
- Setting
- greenhouse potse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter production and uptake of Zn, N, and P by corn grown in greenhouse pots were higher with (NH 4 ) 2 SO 4 than with anhydrous NH 3 or CO(NH 2 ) 2”
Claim · model-written summary
Ammonium sulfate increased corn zinc, nitrogen and phosphorus uptake.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- (NH 4 ) 2 SO 4e0
- Outcome
- uptake of Zn, N, and Pe0
- Direction
- highere0
- Comparator
- anhydrous NH 3 or CO(NH 2 ) 2e0
- Setting
- greenhouse potse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter production and uptake of Zn, N, and P by corn grown in greenhouse pots were higher with (NH 4 ) 2 SO 4 than with anhydrous NH 3 or CO(NH 2 ) 2”
Claim · model-written summary
Lower soil pH under ammonium sulfate increased zinc availability.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- (NH 4 ) 2 SO 4e0
- Outcome
- availability of indigenous and applied Zne0
- Direction
- increasede0
- Qualifier
- lower soil pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower soil pH associated with application of (NH 4 ) 2 SO 4 and hence, the increased availability of indigenous and applied Zn.”
t0“Response of Corn (Zea mays L.) to Zinc, as Affected by Placement and Nitrogen Source”
Claim · model-written summary
Mixing zinc four weeks before planting reduced yield relative to just before planting.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Zn was mixede0
- Outcome
- Yieldse0
- Direction
- lowere0
- Qualifier
- 4 weeks priore0
- Comparator
- treatment just prior to plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were lower when Zn was mixed, but higher when Zn was omitted or spot‐placed 4 weeks prior, as compared to treatment just prior to planting.”
t0“Response of Corn (Zea mays L.) to Zinc, as Affected by Placement and Nitrogen Source”
Claim · model-written summary
Omitting zinc four weeks before planting increased yield relative to treatment just before planting.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Zn was omittede0
- Outcome
- Yieldse0
- Direction
- highere0
- Qualifier
- 4 weeks priore0
- Comparator
- treatment just prior to plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were lower when Zn was mixed, but higher when Zn was omitted or spot‐placed 4 weeks prior, as compared to treatment just prior to planting.”
t0“Response of Corn (Zea mays L.) to Zinc, as Affected by Placement and Nitrogen Source”
Claim · model-written summary
Spot placing zinc four weeks before planting increased yield relative to just before planting.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- spot‐placed 4 weeks priore0
- Outcome
- Yieldse0
- Direction
- highere0
- Comparator
- treatment just prior to plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were lower when Zn was mixed, but higher when Zn was omitted or spot‐placed 4 weeks prior, as compared to treatment just prior to planting.”
t0“Response of Corn (Zea mays L.) to Zinc, as Affected by Placement and Nitrogen Source”
Claim · model-written summary
Zinc and nitrogen uptake generally varied directly with yield.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Zn and N uptakee0
- Direction
- directlye0
- Qualifier
- except where growth was extremely poor due to severe Zn deficiencye0
- Comparator
- yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn and N uptake varied directly with yield and inversely with P uptake, except where growth was extremely poor due to severe Zn deficiency.”
t0“Response of Corn (Zea mays L.) to Zinc, as Affected by Placement and Nitrogen Source”
Claim · model-written summary
Zinc and nitrogen uptake generally varied inversely with phosphorus uptake.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Zn and N uptakee0
- Direction
- inverselye0
- Qualifier
- except where growth was extremely poor due to severe Zn deficiencye0
- Comparator
- P uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn and N uptake varied directly with yield and inversely with P uptake, except where growth was extremely poor due to severe Zn deficiency.”
t0“Response of Corn (Zea mays L.) to Zinc, as Affected by Placement and Nitrogen Source”
The same questions in other papers
zinc atom · yield · Zea mays (maize)Results differ
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- positive
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See all 441 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.