Abstract
Abstract Legacy phosphorus (P), corn ( Zea mays L.) hybrids, weather conditions, and regulation on land‐applied manure affect site‐specific mineral P requirements. Mineral P fertilizers are still banded at corn seeding as insurance policy even where manure P is applied in compliance with regulation in Eastern Canada. Our objective was to measure the effects of site‐specific factors on the response of corn hybrids of the “new” era (1991+) to mineral and manure P fertilization under regulatory constraints. A dataset of 370 corn P fertilizer trials conducted between 1998 and 2004 in Quebec, Canada, comprised trials using mineral P alone (229 trials) or in combination with manure (141 trials). Linear mixed statistical models tested the effect of P fertilization on seedling biomass, grain yield, grain bulk density, and grain moisture content as affected by weather and soil indices. Early plant growth proved to be a poor indicator of final crop performance. Where no manure was applied, grain yield and quality were affected primarily by soil pH, texture, and genesis. There were responses to P additions only where the saturation index (P/Al) M3 was less than 5%. Mineral P fertilizers showed no significant effect on crop performance where manure was applied, but manured soil generally showed (P/Al) M3 percentages exceeding 5%. Banding mineral P at corn seeding where manure was applied at rates complying with the regulation and the (P/Al) M3 percentage exceeded 5% appeared to be a waste of resource under the soil and climate conditions in Eastern Canada.
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Claims 6
Claim · model-written summary
Early plant growth was a poor indicator of final corn crop performance.
- Taxon
- Corn
Zea mays subsp. mayst0 - Organ / stage
- Early plant growthe1
- Outcome
- final crop performancee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn response to banded phosphorus fertilizers with or without manure application in Eastern Canada”
e1“Early plant growth proved to be a poor indicator of final crop performance”
Claim · model-written summary
Where no manure was applied, corn grain yield and quality were affected primarily by soil pH, texture and genesis.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- no manure was appliede2
- Outcome
- grain yield and qualitye2
- Qualifier
- soil pH, texture, and genesise2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn response to banded phosphorus fertilizers with or without manure application in Eastern Canada”
e2“Where no manure was applied, grain yield and quality were affected primarily by soil pH, texture, and genesis”
Claim · model-written summary
Corn responded to P additions only where the (P/Al) M3 saturation index was below 5%.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- P additionse3
- Outcome
- responsese3
- Qualifier
- only where the saturation index (P/Al) M3 was less than 5%e3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn response to banded phosphorus fertilizers with or without manure application in Eastern Canada”
e3“There were responses to P additions only where the saturation index (P/Al) M3 was less than 5%”
Claim · model-written summary
Mineral P fertilizers had no significant effect on corn crop performance where manure was applied.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Mineral P fertilizerse4
- Outcome
- crop performancee4
- Direction
- no significant effecte4
- Qualifier
- where manure was appliede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn response to banded phosphorus fertilizers with or without manure application in Eastern Canada”
e4“Mineral P fertilizers showed no significant effect on crop performance where manure was applied”
Claim · model-written summary
Manured soil generally showed (P/Al) M3 percentages exceeding 5% in corn trials.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- (P/Al) M3 percentagese5
- Value
- 5%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn response to banded phosphorus fertilizers with or without manure application in Eastern Canada”
e5“manured soil generally showed (P/Al) M3 percentages exceeding 5%”
Claim · model-written summary
Banding mineral P at corn seeding where manure was applied and P/Al M3 exceeded 5% appears to be a waste of resource in Eastern Canada.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Banding mineral P at corn seedinge6
- Qualifier
- appeared to be a waste of resource under the soil and climate conditions in Eastern Canadae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn response to banded phosphorus fertilizers with or without manure application in Eastern Canada”
e6“Banding mineral P at corn seeding where manure was applied at rates complying with the regulation and the (P/Al) M3 percentage exceeded 5% appeared to be a waste of resource under the soil and climate conditions in Eastern Canada”
The same questions in other papers
fertilization · yield · Zea mays (maize)Positive and negative results
422 papers in the same direction as this paper · 3,485 in the opposite direction
- positive
- no effect
- no effect
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See all 3,908 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.