Abstract
Abstract Response of 2 successive crops of corn ( Zea mays L.) forage to fine zinc sulfate mixed with 2 soils was measured in greenhouse pot experiments. Zinc sulfate was also incorporated into −9 + 16‐mesh granules of each of four phosphates, ammonium nitrate (AN), and ammonium sulfate (AS) fertilizers. Large amounts of fine dicalcium phosphate (DCP), concentrated superphosphate (CSP), monoammonium phosphate (MAP), and ammonium polyphosphate (APP) depressed the pH of Hartsells fine sandy loam (limed to pH 7.1) increasingly in the order listed. Depression in soil pH was closely related to response of corn to 6 and 12 mg of applied Zn per pot (2 and 4 ppm of Zn). In Nolichucky sandy clay loam (pH 7.3) and Hartsells soil limed heavily to pH 8.0, soil pH remained high and response to Zn with the APP, MAP, and CSP sources of P was similar and greater than with DCP. Forage yields and uptake of Zn were in the order: Zn mixed alone with the soil > Zn in AN or AS granules > Zn in phosphate granules > no applied Zn. Results with Zn in DCP granules were poorest. Reciprocal Relationships between concentrations of P and Zn in the corn were largely related to yield levels dependent on sufficiency of Zn.
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Claims 7
Claim · model-written summary
Phosphate fertilizers lowered Hartsells soil pH in increasing order DCP, CSP, MAP, APP.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- dicalcium phosphate (DCP), concentrated superphosphate (CSP), monoammonium phosphate (MAP), and ammonium polyphosphate (APP)e0
- Outcome
- pH of Hartsells fine sandy loame0
- Direction
- depressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Large amounts of fine dicalcium phosphate (DCP), concentrated superphosphate (CSP), monoammonium phosphate (MAP), and ammonium polyphosphate (APP) depressed the pH of Hartsells fine sandy loam (limed to pH 7.1) increasingly in the order listed.”
t0“Corn”
Claim · model-written summary
Soil pH depression was closely related to corn response to applied zinc.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 6 and 12 mg of applied Zn per pote0
- Outcome
- response of corne0
- Qualifier
- Depression in soil pHe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Depression in soil pH was closely related to response of corn to 6 and 12 mg of applied Zn per pot (2 and 4 ppm of Zn).”
Claim · model-written summary
In high pH soils, corn response to zinc was greater with APP, MAP, and CSP than with DCP.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- APP, MAP, and CSP sources of Pe0
- Outcome
- response to Zne0
- Direction
- greatere0
- Comparator
- DCPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil pH remained high and response to Zn with the APP, MAP, and CSP sources of P was similar and greater than with DCP.”
t0“Corn”
Claim · model-written summary
Corn forage yields ranked soil mixed zinc above zinc in nitrogen granules, phosphate granules, and no zinc.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Zn mixed alone with the soile0
- Outcome
- Forage yieldse0
- Direction
- >e0
- Comparator
- no applied Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yields and uptake of Zn were in the order: Zn mixed alone with the soil > Zn in AN or AS granules > Zn in phosphate granules > no applied Zn.”
t0“Corn”
Claim · model-written summary
Corn zinc uptake followed the same fertilizer source ranking as forage yield.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Zn mixed alone with the soile0
- Outcome
- uptake of Zne0
- Direction
- >e0
- Comparator
- no applied Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yields and uptake of Zn were in the order: Zn mixed alone with the soil > Zn in AN or AS granules > Zn in phosphate granules > no applied Zn.”
t0“Corn”
Claim · model-written summary
Results with zinc in DCP granules were poorest.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Results with Zn in DCP granulese0
- Direction
- pooreste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results with Zn in DCP granules were poorest.”
t0“Corn”
Claim · model-written summary
Reciprocal phosphorus and zinc concentration relationships in corn largely tracked yield levels dependent on zinc sufficiency.
- Taxon
- cornZea mays subsp. mayse0
- Compound
- P and Zne0
- Outcome
- concentrations of P and Zne0
- Qualifier
- yield levels dependent on sufficiency of Zne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reciprocal Relationships between concentrations of P and Zn in the corn were largely related to yield levels dependent on sufficiency of Zn.”
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