Paper · 1971 · Journal of the American Society for Horticultural Science

Effects of Time of Application of N and K and of N Rate on Performance of Nucellar ‘Valencia’ Orange Trees on Two Stocks1

Paul F. Smith

5
claims
9
verbatim quotes
3
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Yield of fruit, fruit quality, and mineral composition of the leaves of ‘Valencia’ orange [ Citrus sinensis (L.) Osb.] were essentially unchanged by widely different schedules of applying N and K. Single annual applications of NH 4 NO 3 were made in fall, spring, or summer. Applications of KCl were made twice yearly, annually in fall or spring, or biennially in alternate springs. Two rates of N maintained average leaf levels of about 2.6 and 2.7%. A yield increase accompanied the higher level of N. Similar responses occurred on ‘Rough’ lemon ( C. jambhiri Lush.) and ‘Cleopatra’ mandarin ( C. reticulata Blanco) rootstocks.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Yield, fruit quality and leaf mineral composition of Valencia orange were essentially unchanged by widely different schedules of applying N and K.

Taxon
Citrus sinensisCitrus sinensise0
Material
Valenciae0
Organ / stage
leavese0
Treatment
widely different schedules of applying N and Ke0
Outcome
Yield of fruit, fruit quality, and mineral composition of the leavese0
Direction
essentially unchangede0

Not reportedComparator

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

Citrus sinensis
Citrus sinensis · TaxonEllen Levy Finch ( Elf ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Yield of fruit, fruit quality, and mineral composition of the leaves of ‘Valencia’ orange [ Citrus sinensis (L.) Osb.] were essentially unchanged by widely different schedules of applying N and K”

✓ located verbatim in the source · abstract, characters 9–204 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Two rates of N maintained average leaf levels of about 2.6 and 2.7% in Valencia orange.

Taxon
Citrus sinensisCitrus sinensise0
Treatment
Two rates of Ne1
Outcome
average leaf levelse1
Direction
maintainede1
Value
about 2.6 and 2.7%e1

Not reportedComparator

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

Citrus sinensis
Citrus sinensis · TaxonEllen Levy Finch ( Elf ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Yield of fruit, fruit quality, and mineral composition of the leaves of ‘Valencia’ orange [ Citrus sinensis (L.) Osb.] were essentially unchanged by widely different schedules of applying N and K”

✓ located verbatim in the source · abstract, characters 9–204 · show in text ↑
e1

“Two rates of N maintained average leaf levels of about 2.6 and 2.7%”

✓ located verbatim in the source · abstract, characters 392–459 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A higher level of N was accompanied by a yield increase in Valencia orange.

Taxon
Citrus sinensisCitrus sinensise0
Treatment
higher level of Ne2
Outcome
yielde2
Direction
increasee2

Not reportedComparator

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

Citrus sinensis
Citrus sinensis · TaxonEllen Levy Finch ( Elf ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Yield of fruit, fruit quality, and mineral composition of the leaves of ‘Valencia’ orange [ Citrus sinensis (L.) Osb.] were essentially unchanged by widely different schedules of applying N and K”

✓ located verbatim in the source · abstract, characters 9–204 · show in text ↑
e2

“A yield increase accompanied the higher level of N”

✓ located verbatim in the source · abstract, characters 461–511 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rough lemon rootstock showed similar responses to the higher level of N.

Taxon
C. jambhiriCitrus jambhirie3
Material
Roughe3
Treatment
higher level of Ne2
Outcome
responsese3
Direction
Similare3

Not reportedComparator

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

Citrus jambhiri
Citrus jambhiri · TaxonTon Rulkens from Mozambique · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e2

“A yield increase accompanied the higher level of N”

✓ located verbatim in the source · abstract, characters 461–511 · show in text ↑
e3

“Similar responses occurred on ‘Rough’ lemon ( C. jambhiri Lush.) and ‘Cleopatra’ mandarin ( C. reticulata Blanco) rootstocks”

✓ located verbatim in the source · abstract, characters 513–637 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cleopatra mandarin rootstock showed similar responses to the higher level of N.

Taxon
C. reticulataCitrus reticulatae3
Material
Cleopatrae3
Treatment
higher level of Ne2
Outcome
responsese3
Direction
Similare3

Not reportedComparator

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

Citrus reticulata
Citrus reticulata · TaxonJoe Ravi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e2

“A yield increase accompanied the higher level of N”

✓ located verbatim in the source · abstract, characters 461–511 · show in text ↑
e3

“Similar responses occurred on ‘Rough’ lemon ( C. jambhiri Lush.) and ‘Cleopatra’ mandarin ( C. reticulata Blanco) rootstocks”

✓ located verbatim in the source · abstract, characters 513–637 · show in text ↑

nitrogen · quality: grain · Citrus sinensis (sweet orange)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. no effect
See all 4 papers →

potassium · quality: grain · Citrus sinensis (sweet orange)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

3 in the opposite direction

  1. positive
  2. positive
  3. positive
See all 4 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.