Paper · 2021 · Journal of the Korean Wood Science and Technology

The Effect of Wood Extract as a Water-Soluble Fertilizer in the Growth of Lactuca sativa

Ji Young JUNG; Si Young HA; Jae-Kyung YANG

14
claims
27
verbatim quotes
3
citations
2
research areas
✓
Open access

Abstract

Recently, due to environmental and toxicity issues, there has been increasing attention on research regarding natural products that can reduce the use of chemical fertilizers. Wood extracts derived from the biorefining process contain various fertilizer ingredients. HPLC analysis revealed that wood extract contains approximately 5.2% hemicellulosic sugar. The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study. After two weeks, the growth characteristics of lettuce as affected by wood extract or water-soluble fertilizers were significantly different. The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant). The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant). From these results, it was concluded that wood extract can be used as a potential water-soluble fertilizer to increase the yield of leafy vegetables.

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Claims 14

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-soluble fertilizers without wood extract gave less desirable lettuce plant height than wood extracts

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extracte1
Outcome
plant heighte1
Direction
less desirablee1
Qualifier
plant height (18.6 cm)e1
Comparator
wood extractse1

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e1

“The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant)”

✓ located verbatim in the source · abstract, characters 704–1078 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-soluble fertilizers without wood extract gave less desirable lettuce number of leaves than wood extracts

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extracte1
Outcome
number of leavese1
Direction
less desirablee1
Qualifier
number of leaves (10)e1
Comparator
wood extractse1

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e1

“The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant)”

✓ located verbatim in the source · abstract, characters 704–1078 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-soluble fertilizers without wood extract gave less desirable lettuce leaf length than wood extracts

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extracte1
Outcome
leaf lengthe1
Direction
less desirablee1
Qualifier
leaf length (14.1 cm)e1
Comparator
wood extractse1

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e1

“The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant)”

✓ located verbatim in the source · abstract, characters 704–1078 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-soluble fertilizers without wood extract gave less desirable lettuce shoot fresh wight than wood extracts

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extracte1
Outcome
shoot fresh wighte1
Direction
less desirablee1
Qualifier
shoot fresh wight (9.8 g/plant)e1
Comparator
wood extractse1

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e1

“The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant)”

✓ located verbatim in the source · abstract, characters 704–1078 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-soluble fertilizers without wood extract gave less desirable lettuce root fresh weight than wood extracts

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extracte1
Outcome
root fresh weighte1
Direction
less desirablee1
Qualifier
root fresh weight (0.8 g/plant)e1
Comparator
wood extractse1

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e1

“The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant)”

✓ located verbatim in the source · abstract, characters 704–1078 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water-soluble fertilizers without wood extract gave less desirable lettuce shoot dry weight than wood extracts

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extracte1
Outcome
shoot dry weighte1
Direction
less desirablee1
Qualifier
shoot dry weight (0.6 g/plant)e1
Comparator
wood extractse1

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e1

“The effect of water-soluble fertilizers containing ascorbic acid, magnesium sulfate, citric acid, potassium nitrate, amino acids, or seaweed extract was less desirable than that of wood extracts regarding plant height (18.6 cm), number of leaves (10), leaf length (14.1 cm), shoot fresh wight (9.8 g/plant), root fresh weight (0.8 g/plant) and shoot dry weight (0.6 g/plant)”

✓ located verbatim in the source · abstract, characters 704–1078 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Lettuce fertilized with wood-extract fertilizers differed significantly from the control in plant height

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing wood extracte2
Outcome
plant heighte2
Direction
significantly differente2
Qualifier
plant height :13.5 cme2
Comparator
controle2

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e2

“The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant)”

✓ located verbatim in the source · abstract, characters 1080–1487 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Lettuce fertilized with wood-extract fertilizers differed significantly from the control in number of leaves

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing wood extracte2
Outcome
number of leavese2
Direction
significantly differente2
Qualifier
number of leaves : 7e2
Comparator
controle2

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e2

“The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant)”

✓ located verbatim in the source · abstract, characters 1080–1487 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Lettuce fertilized with wood-extract fertilizers differed significantly from the control in leaf length

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing wood extracte2
Outcome
leaf lengthe2
Direction
significantly differente2
Qualifier
leaf length : 9.4 cme2
Comparator
controle2

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e2

“The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant)”

✓ located verbatim in the source · abstract, characters 1080–1487 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Lettuce fertilized with wood-extract fertilizers differed significantly from the control in shoot fresh wight

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing wood extracte2
Outcome
shoot fresh wighte2
Direction
significantly differente2
Qualifier
shoot fresh wight : 5.3 g/plante2
Comparator
controle2

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e2

“The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant)”

✓ located verbatim in the source · abstract, characters 1080–1487 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Lettuce fertilized with wood-extract fertilizers differed significantly from the control in root fresh weight

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing wood extracte2
Outcome
root fresh weighte2
Direction
significantly differente2
Qualifier
root fresh weight : 0.7 g/plante2
Comparator
controle2

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e2

“The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant)”

✓ located verbatim in the source · abstract, characters 1080–1487 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Lettuce fertilized with wood-extract fertilizers differed significantly from the control in shoot dry weight

Taxon
lettuceLactuca sativae0
Treatment
water-soluble fertilizers containing wood extracte2
Outcome
shoot dry weighte2
Direction
significantly differente2
Qualifier
shoot dry weight : 0.4 g/plante2
Comparator
controle2

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e2

“The plant height, number of leaves, leaf length, shoot fresh wight, root fresh weight, shoot dry weight of water-soluble fertilizers containing wood extract were significantly different compared to the control (plant height :13.5 cm, number of leaves : 7, leaf length : 9.4 cm, shoot fresh wight : 5.3 g/plant, root fresh weight : 0.7 g/plant, shoot dry weight : 0.4 g/plant, root dry weight : 0.07 g/plant)”

✓ located verbatim in the source · abstract, characters 1080–1487 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Wood extract contains about 5.2% hemicellulosic sugar

Taxon
pinePinuse0
Outcome
hemicellulosic sugare4
Value
5.2%e4

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

Pinus
Pinus · Taxon · picture of the genus (one of its species)Forest Service Northern Region from Missoula, MT, USA · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The growth of lettuce (Lactuca sativa) upon treatment with wood extract (extract obtained from steam-exploded pine) or water-soluble fertilizers containing different nutrients was analyzed in this study”

✓ located verbatim in the source · abstract, characters 358–560 · show in text ↑
e4

“HPLC analysis revealed that wood extract contains approximately 5.2% hemicellulosic sugar”

✓ located verbatim in the source · abstract, characters 267–356 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Wood extract can be used as a potential water-soluble fertilizer to increase leafy vegetable yield

Taxon
leafy vegetablese3
Treatment
wood extracte3
Outcome
yielde3

Verbatim

e3

“From these results, it was concluded that wood extract can be used as a potential water-soluble fertilizer to increase the yield of leafy vegetables”

✓ located verbatim in the source · abstract, characters 1489–1637 · show in text ↑

potassium nitrate · growth · Lactuca sativa (garden lettuce)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

ascorbic acid · growth · Lactuca sativa (garden lettuce)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 →

citric acid · growth · Lactuca sativa (garden lettuce)Positive and negative results

5 papers: 3 positive, 2 negative or no effect

1 paper in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

other · growth · Lactuca sativa (garden lettuce)Positive and negative results

78 papers: 66 positive, 12 negative or no effect

11 papers in the same direction as this paper · 66 in the opposite direction

  1. positive
  2. positive
  3. positive

74 papers more in this group

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fertilization · growth · Lactuca sativa (garden lettuce)Positive and negative results

248 papers: 202 positive, 46 negative or no effect

201 papers in the same direction as this paper · 45 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

244 papers more in this group

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botanical · growth · Lactuca sativa (garden lettuce)Positive and negative results

271 papers: 114 positive, 157 negative or no effect

113 papers in the same direction as this paper · 157 in the opposite direction

  1. negative
  2. negative
  3. negative

267 papers more in this group

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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.