Abstract
Abstract Deficiencies in soil zinc (Zn) may limit yield of corn (Zea mays L.) in parts of the northeastern United States. Because phosphorus (P) fertilizer is usually applied in excess of what is removed by the crop, buildup of P could reduce the plant availability of Zn. This study examines the effects of P and Zn fertilizer on yield of corn and levels of P and Zn in soil and tissue. Compared to corn that received no P or Zn, the yield of grain increased in three years when 66 kg/ha P + 0 kg/ha Zn and 66 kg/ha P + 15 kg/ha Zn was applied. When corn was fertilized with 0 kg/ha P + 15 kg/ha Zn, grain yield increased in one year. Similarly, an increase in grain yield occurred in only one year in plots fertilized with 66 kg/ha P + 15 kg/ha Zn compared to 66 kg/ha P + 0 kg/ha Zn. Increases in grain yields ranged between 5 and 22 percent for plots receiving P alone and P plus Zn, and between 5 and 10 percent for plots fertilized with Zn alone. Silage yields followed the same trends as the grain yields except they were less pronounced. Tissue and soil analyses showed significant increases in Zn in plots fertilized with Zn but little increases in P in plots fertilized with P. Zinc reductions in tissue because of P fertilizer was minimal.
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Claims 10
Claim · model-written summary
P alone increased corn grain yield in three years relative to no P or Zn.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- 66 kg/ha P + 0 kg/ha Zne0
- Outcome
- yield of graine0
- Direction
- increasede0
- Qualifier
- in three yearse0
- Comparator
- corn that received no P or Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to corn that received no P or Zn, the yield of grain increased in three years when 66 kg/ha P + 0 kg/ha Zn and 66 kg/ha P + 15 kg/ha Zn was applied.”
Claim · model-written summary
P plus Zn increased grain yield in three years relative to no fertilizer.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 66 kg/ha P + 15 kg/ha Zne0
- Outcome
- yield of graine0
- Direction
- increasede0
- Qualifier
- in three yearse0
- Comparator
- corn that received no P or Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to corn that received no P or Zn, the yield of grain increased in three years when 66 kg/ha P + 0 kg/ha Zn and 66 kg/ha P + 15 kg/ha Zn was applied.”
Claim · model-written summary
Zn alone increased corn grain yield in one year.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 0 kg/ha P + 15 kg/ha Zne0
- Outcome
- grain yielde0
- Direction
- increasede0
- Qualifier
- in one yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When corn was fertilized with 0 kg/ha P + 15 kg/ha Zn, grain yield increased in one year.”
Claim · model-written summary
Adding Zn to P increased corn grain yield in only one year.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 66 kg/ha P + 15 kg/ha Zne0
- Outcome
- grain yielde0
- Direction
- increasee0
- Qualifier
- only one yeare0
- Comparator
- 66 kg/ha P + 0 kg/ha Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“an increase in grain yield occurred in only one year in plots fertilized with 66 kg/ha P + 15 kg/ha Zn compared to 66 kg/ha P + 0 kg/ha Zn”
Claim · model-written summary
Grain yield increases for P alone and P plus Zn ranged from 5 to 22 percent.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- P alone and P plus Zne0
- Outcome
- grain yieldse0
- Direction
- Increasese0
- Value
- 5 and 22 percente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“Increases in grain yields ranged between 5 and 22 percent for plots receiving P alone and P plus Zn”
Claim · model-written summary
Grain yield increases for Zn alone ranged from 5 to 10 percent.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Zn alonee0
- Outcome
- grain yieldse0
- Direction
- Increasese0
- Value
- 5 and 10 percente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“Increases in grain yields ranged between 5 and 22 percent for plots receiving P alone and P plus Zn, and between 5 and 10 percent for plots fertilized with Zn alone.”
Claim · model-written summary
Silage yield followed the grain yield trend but less strongly.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- Silage yieldse0
- Direction
- less pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“Silage yields followed the same trends as the grain yields except they were less pronounced.”
Claim · model-written summary
Zn fertilization significantly increased tissue and soil Zn.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Zne0
- Outcome
- Zne0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“Tissue and soil analyses showed significant increases in Zn in plots fertilized with Zn”
Claim · model-written summary
P fertilization produced little increase in tissue and soil P.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Pe0
- Outcome
- Pe0
- Direction
- little increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“little increases in P in plots fertilized with P”
Claim · model-written summary
P fertilizer minimally reduced tissue Zn.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- P fertilizere0
- Outcome
- Zinc reductions in tissuee0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn”
e0“Zinc reductions in tissue because of P fertilizer was minimal.”
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See all 1,164 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.