Paper · 2010 · HortTechnology

Fertilization Improves Cold Tolerance in Coconut Palm

Timothy K. Broschat

6
claims
9
verbatim quotes
15
citations
3
research areas
✓
Open access

Abstract

Coconut palms ( Cocos nucifera ) in a field planting that were fertilized with a 8N–0.9P–10K–4Mg fertilizer four times per year or were never fertilized experienced chilling injury (CI) temperatures in 2008, 2009, and 2010. Fertilized coconut palms had significantly less foliar necrosis in each year than unfertilized palms and also retained more of their fruits. The number of leaves supported by each palm, a measure of potassium (K) deficiency severity, was improved by fertilization and was negatively correlated with percentage of necrosis of the foliage caused by cold temperatures. Nitrogen and K concentrations in leaf 1 of coconut palms were also negatively correlated with CI severity.

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Claims 6

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Fertilized coconut palms had significantly less foliar necrosis each year than unfertilized palms.

Taxon
coconut palmsCocos nuciferae0
Treatment
Fertilizede0
Outcome
foliar necrosise0
Direction
lesse0
Qualifier
in each yeare0
Comparator
unfertilized palmse0

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

Cocos nucifera
Cocos nucifera · Taxon · picture from its Wikimedia Commons categoryThamizhpparithi Maari · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilized coconut palms had significantly less foliar necrosis in each year than unfertilized palms”

✓ located verbatim in the source · abstract, characters 224–324 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fertilized palms retained more fruits than unfertilized palms.

Taxon
coconut palmsCocos nuciferae0
Treatment
Fertilizede0
Outcome
fruitse0
Direction
moree0
Comparator
unfertilized palmse0

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

Cocos nucifera
Cocos nucifera · Taxon · picture from its Wikimedia Commons categoryThamizhpparithi Maari · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Fertilized coconut palms had significantly less foliar necrosis in each year than unfertilized palms and also retained more of their fruits”

✓ located verbatim in the source · abstract, characters 224–363 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fertilization improved the number of leaves per coconut palm.

Taxon
Coconut palmsCocos nuciferae1
Treatment
fertilizatione0
Outcome
number of leavese0
Direction
improvede0

Not reportedComparator

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

Cocos nucifera
Cocos nucifera · Taxon · picture from its Wikimedia Commons categoryThamizhpparithi Maari · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The number of leaves supported by each palm, a measure of potassium (K) deficiency severity, was improved by fertilization”

✓ located verbatim in the source · abstract, characters 365–487 · show in text ↑
e1

“Coconut palms”

✓ located verbatim in the source · abstract, characters 0–13 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Leaf number was negatively correlated with cold induced foliage necrosis.

Taxon
Coconut palmsCocos nuciferae1
Organ / stage
leavese2
Outcome
percentage of necrosis of the foliagee0
Direction
negatively correlatede0

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

Cocos nucifera
Cocos nucifera · Taxon · picture from its Wikimedia Commons categoryThamizhpparithi Maari · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“negatively correlated with percentage of necrosis of the foliage caused by cold temperatures”

✓ located verbatim in the source · abstract, characters 496–588 · show in text ↑
e1

“Coconut palms”

✓ located verbatim in the source · abstract, characters 0–13 · show in text ↑
e2

“number of leaves”

✓ located verbatim in the source · abstract, characters 369–385 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Leaf nitrogen concentration was negatively correlated with chilling injury severity.

Taxon
coconut palmsCocos nuciferae0
Organ / stage
leaf 1e0
Compound
Nitrogene0
Outcome
CI severitye0
Direction
negatively correlatede0

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

Cocos nucifera
Cocos nucifera · Taxon · picture from its Wikimedia Commons categoryThamizhpparithi Maari · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen and K concentrations in leaf 1 of coconut palms were also negatively correlated with CI severity”

✓ located verbatim in the source · abstract, characters 590–695 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Leaf potassium concentration was negatively correlated with chilling injury severity.

Taxon
coconut palmsCocos nuciferae0
Organ / stage
leaf 1e0
Compound
Ke0
Outcome
CI severitye0
Direction
negatively correlatede0

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

Cocos nucifera
Cocos nucifera · Taxon · picture from its Wikimedia Commons categoryThamizhpparithi Maari · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen and K concentrations in leaf 1 of coconut palms were also negatively correlated with CI severity”

✓ located verbatim in the source · abstract, characters 590–695 · show in text ↑

fertilization · growth · Cocos nucifera (coconut palm)Positive and negative results

13 papers: 11 positive, 2 negative or no effect

10 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. no effect
  3. positive

9 papers more in this group

See all 13 papers →

fertilization · disease · Cocos nucifera (coconut palm)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 papers →

fertilization · yield · Cocos nucifera (coconut palm)Results agree

19 papers: 19 positive, 0 negative or no effect

18 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

15 papers more in this group

See all 19 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.