Abstract
Abstract Studies were carried out in the greenhouse and field to elaborate the mechanism of P‐Zn interaction in the nutrition of corn ( Zea mays L.). From this work depressive action of P on Zn uptake of corn appears to be largely physiological in nature, expressed at root surfaces and/or in root cells, and is not chemical inactivation of Zn by P in soil. Translocation of Zn from roots to tops is inhibited by elevated P concentration, with resulting sharp reduction in Zn concentration of nodal and internodal tissues. No clearly definable P/Zn ratio in tissue was found above which yield restriction could be predicted. Corn seems to tolerate high concentrations of P in its tissues provided some modest quantity of Zn is present. Other elements counteract somewhat the damaging effects of P. Concurrently placed N promotes Zn uptake at the same time that it benefits P utilization. Increased level of native or applied K reduces the depressive effects of P on Zn.
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Claims 9
Claim · model-written summary
Phosphorus depressed corn zinc uptake through a largely physiological process at roots.
- Taxon
- corn
Zea mays subsp. mayse0 - Organ / stage
- root surfaces and/or in root cellse0
- Treatment
- Pe0
- Outcome
- Zn uptakee0
- Qualifier
- largely physiological in naturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depressive action of P on Zn uptake of corn appears to be largely physiological in nature, expressed at root surfaces and/or in root cells, and is not chemical inactivation of Zn by P in soil”
Claim · model-written summary
Elevated phosphorus inhibited zinc movement from roots to tops.
- Treatment
- elevated P concentratione0
- Outcome
- Translocation of Zn from roots to topse0
- Direction
- inhibitede0
Not reportedTaxonComparator
Verbatim
e0“Translocation of Zn from roots to tops is inhibited by elevated P concentration”
Claim · model-written summary
Elevated phosphorus sharply reduced nodal and internodal zinc concentrations.
Not reportedTaxonTreatmentComparator
Verbatim
e0“with resulting sharp reduction in Zn concentration of nodal and internodal tissues”
Claim · model-written summary
No tissue phosphorus to zinc threshold predicted yield restriction.
- Outcome
- P/Zn ratio in tissuee0
Not reportedTaxon
Verbatim
e0“No clearly definable P/Zn ratio in tissue was found above which yield restriction could be predicted”
Claim · model-written summary
Corn appeared to tolerate high tissue phosphorus when modest zinc was present.
- Taxon
- CornZea mays subsp. mayse0
- Compound
- Zne0
- Outcome
- tolerate high concentrations of Pe0
- Qualifier
- some modest quantity of Zn is presente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn seems to tolerate high concentrations of P in its tissues provided some modest quantity of Zn is present”
Claim · model-written summary
Other elements somewhat counteracted phosphorus damage.
Not reportedTaxonComparator
Verbatim
e0“Other elements counteract somewhat the damaging effects of P”
Claim · model-written summary
Concurrently placed nitrogen promoted zinc uptake.
Not reportedTaxonComparator
Verbatim
e0“Concurrently placed N promotes Zn uptake”
Claim · model-written summary
Concurrently placed nitrogen benefited phosphorus utilization.
Not reportedTaxonTreatmentComparator
Verbatim
e0“at the same time that it benefits P utilization”
Claim · model-written summary
Increased native or applied potassium reduced phosphorus depressive effects on zinc.
- Treatment
- Increased level of native or applied Ke0
- Outcome
- depressive effects of P on Zne0
- Direction
- reducese0
Not reportedTaxonComparator
Verbatim
e0“Increased level of native or applied K reduces the depressive effects of P on Zn”
The same questions in other papers
potassium · nutrient: content · Zea mays (maize)Results differ
73 papers in the same direction as this paper · 22 in the opposite direction
- no effect
- no effect
- negative
92 papers more in this group
See all 96 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.