Abstract
Effects of mono-, diammonium, and superphosphate with added urea or ammonium nitrate on corn (Zea mays L.) growth were studied in the field in 1971 and 1972. At the rate of 100 kg P 2 O 5 /ha, none of the carriers affected emergence of seedlings in five Quebec soils. Leaf P content at silking time was of little benefit in predicting P status of the plants, or in differentiating among the carriers. Phosphorous applications gave significant corn yield increases, with carriers performing alike when averaged over all sites. However, some yield differences among carriers occurred on some soil types and seasons. These carrier differences were not consistent and remain to be clarified. The ammonium phosphates compared with the check generally hastened maturity but reduced potassium levels in leaf tissue of corn.
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Claims 7
Claim · model-written summary
At 100 kg P 2 O 5 /ha, carriers did not affect corn seedling emergence.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- mono-, diammonium, and superphosphate with added urea or ammonium nitratee1
- Outcome
- emergence of seedlingse0
- Direction
- none of the carriers affectede0
- Qualifier
- 100 kg P 2 O 5 /hae0
- Setting
- five Quebec soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the rate of 100 kg P 2 O 5 /ha, none of the carriers affected emergence of seedlings in five Quebec soils”
e1“Effects of mono-, diammonium, and superphosphate with added urea or ammonium nitrate on corn (Zea mays L.) growth were studied”
Claim · model-written summary
Leaf P content at silking was of little benefit in predicting plant P status or distinguishing carriers.
- Taxon
- cornZea mays subsp. mayse1
- Organ / stage
- Leafe0
- Outcome
- predicting P status of the plants, or in differentiating among the carrierse0
- Comparator
- carrierse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf P content at silking time was of little benefit in predicting P status of the plants, or in differentiating among the carriers”
e1“on corn (Zea mays L.) growth”
Claim · model-written summary
Phosphorus applications significantly increased corn yield.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Phosphorous applicationse0
- Outcome
- corn yielde0
- Direction
- increasese0
- Comparator
- checke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorous applications gave significant corn yield increases”
e1“compared with the check”
Claim · model-written summary
Carriers performed alike in yield when averaged across sites.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- corn yielde1
- Direction
- alikee0
- Qualifier
- averaged over all sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carriers performing alike when averaged over all sites”
e1“corn yield increases”
Claim · model-written summary
Some carrier yield differences occurred by soil type and season, inconsistently.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- yield differences among carrierse0
- Qualifier
- some soil types and seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some yield differences among carriers occurred on some soil types and seasons. These carrier differences were not consistent”
e1“corn yield increases”
Claim · model-written summary
Ammonium phosphates generally hastened corn maturity relative to the check.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- ammonium phosphatese0
- Outcome
- maturitye0
- Direction
- hastenede0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ammonium phosphates compared with the check generally hastened maturity but reduced potassium levels in leaf tissue of corn”
Claim · model-written summary
Ammonium phosphates generally reduced corn leaf potassium levels relative to the check.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- leaf tissuee0
- Treatment
- ammonium phosphatese0
- Outcome
- potassium levels in leaf tissuee0
- Direction
- reducede0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ammonium phosphates compared with the check generally hastened maturity but reduced potassium levels in leaf tissue of corn”
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