Paper · 1965 · Agronomy Journal

Response of Orchardgrass to Fail‐and Spring‐Applied Nitrogen1

C. B. Kresge

5
claims
8
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Synopsis Urea and (NH 4 ) 2 SO 4 , applied in late November or mid‐December produced orchardgrass forage yields comparable to those from a March application. However, N recovery was highest from the spring application,. Nitrate from NH 4 NO 3 apparently leached over winter, making this N source inferior for late fall fertilization, Ureaformaldehyde showed promise only on a long term basis.

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Claims 5

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Late fall urea produced orchardgrass forage yields comparable to March application.

Taxon
orchardgrassDactylis glomeratae0
Treatment
Ureae0
Outcome
orchardgrass forage yieldse0
Direction
comparablee0
Qualifier
late November or mid‐Decembere0
Comparator
March applicatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Dactylis glomerata
Dactylis glomerata · TaxonW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Urea and (NH 4 ) 2 SO 4 , applied in late November or mid‐December produced orchardgrass forage yields comparable to those from a March application.”

✓ located verbatim in the source · abstract, characters 9–157 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Late fall ammonium sulfate produced orchardgrass forage yields comparable to March application.

Taxon
orchardgrassDactylis glomeratae0
Treatment
(NH 4 ) 2 SO 4e0
Outcome
orchardgrass forage yieldse0
Direction
comparablee0
Qualifier
late November or mid‐Decembere0
Comparator
March applicatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Dactylis glomerata
Dactylis glomerata · TaxonW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Urea and (NH 4 ) 2 SO 4 , applied in late November or mid‐December produced orchardgrass forage yields comparable to those from a March application.”

✓ located verbatim in the source · abstract, characters 9–157 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen recovery was highest after spring application.

Taxon
OrchardgrassDactylis glomeratat0
Treatment
spring applicatione0
Outcome
N recoverye0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Dactylis glomerata
Dactylis glomerata · TaxonW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“N recovery was highest from the spring application”

✓ located verbatim in the source · abstract, characters 167–217 · show in text ↑
t0

“Orchardgrass”

✓ located verbatim in the source · title, characters 12–24 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Ammonium nitrate was inferior for late fall fertilization, apparently because nitrate leached over winter.

Taxon
OrchardgrassDactylis glomeratat0
Treatment
NH 4 NO 3e0
Outcome
Nitrate from NH 4 NO 3 apparently leached over wintere0
Direction
inferiore0
Qualifier
late fall fertilizatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Dactylis glomerata
Dactylis glomerata · TaxonW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrate from NH 4 NO 3 apparently leached over winter, making this N source inferior for late fall fertilization”

✓ located verbatim in the source · abstract, characters 220–332 · show in text ↑
t0

“Orchardgrass”

✓ located verbatim in the source · title, characters 12–24 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Ureaformaldehyde showed promise only for long term use.

Taxon
OrchardgrassDactylis glomeratat0
Treatment
Ureaformaldehydee0
Outcome
showed promisee0
Qualifier
only on a long term basise0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Dactylis glomerata
Dactylis glomerata · TaxonW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Ureaformaldehyde showed promise only on a long term basis.”

✓ located verbatim in the source · abstract, characters 334–392 · show in text ↑
t0

“Orchardgrass”

✓ located verbatim in the source · title, characters 12–24 · show in text ↑

nitrogen · yield · Dactylis glomerata (cocksfoot)Positive and negative results

18 papers: 15 positive, 3 negative or no effect

2 papers in the same direction as this paper · 15 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

14 papers more in this group

See all 18 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.