Paper · 2000 · Journal of Food and Dairy Sciences

EFFECT OF NITROGEN FERTILIZATION AND SPRAYING GIBBERELLIC ACID (GA3) ON GROWTH, SEED YIELD AND ITS OIL CONTENT OF SOME LETTUCE CULTIVARS

Amal Farrag,; H. Mohamed

17
claims
34
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

In the present investigation, three cultivars of lettuce (Balady, Dark Green and Great Lakes) were fertilized with 30, 60 or 90 kg N/fed. and sprayed 2 times with GA3 at 0, 50 or 100 ppm. The height of Dark Green plants exhibited significant increase, whereas Balady plants gaved significant increase in plant fresh weight, number of leaves, seed yield/fed. and average weight of 1000 seeds. Great Lakes was the earliest cultivar and had the highest number of seed stalks and the maximal percentage of bolting plants. Increasing N levels significantly enhanced the plant height, fresh weight and number of leaves/plant. Application of 60 kg. N/fed. increased the percentage of dry matter of leaves and resulted in the highest percentage of bolting plants, seed stalks number/plant, seed yield/fed., weight of 1000 seeds and germination percentage of produced seeds. The seed oil percentage was also increased when the nitrogen application rate was raised. Balady seeds exhibited considerable increase in its oil content when fertilized with 90 kg N/fed. Using GA3 at 50 ppm increased seed stalks number/plant, percentage of bolting plants, seed yield, weight of 1000 seed and germination percentage of seed. However, the seed oil percentage decreased with the application of GA3. In general Balady plants fertilized with 60 kg N/fed. and sprayed with 50 ppm GA3 produced the highest seed yield. The results also revealed that lettuce seed oil (Balady cv.) could supplement or substitute the conventional oil types in terms of its fatty acid composition and other physicochemical properties

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 17

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Plant height of Dark Green lettuce increased significantly.

Taxon
lettuceLactuca sativae0
Material
Dark Greene0
Outcome
heighte1
Direction
increasee1

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e1

“The height of Dark Green plants exhibited significant increase”

✓ located verbatim in the source · abstract, characters 188–250 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Plant fresh weight, leaf number and seed yield of Balady lettuce increased significantly.

Taxon
lettuceLactuca sativae0
Material
Baladye0
Outcome
plant fresh weight, number of leaves, seed yield/fed.e2
Direction
increasee2

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e2

“Balady plants gaved significant increase in plant fresh weight, number of leaves, seed yield/fed. and average weight of 1000 seeds”

✓ located verbatim in the source · abstract, characters 260–390 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Average weight of 1000 seeds of Balady lettuce increased significantly.

Taxon
lettuceLactuca sativae0
Material
Baladye0
Outcome
average weight of 1000 seedse2
Direction
increasee2

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e2

“Balady plants gaved significant increase in plant fresh weight, number of leaves, seed yield/fed. and average weight of 1000 seeds”

✓ located verbatim in the source · abstract, characters 260–390 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Great Lakes lettuce had the highest number of seed stalks.

Taxon
lettuceLactuca sativae0
Material
Great Lakese3
Outcome
number of seed stalkse3
Direction
higheste3

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e3

“Great Lakes was the earliest cultivar and had the highest number of seed stalks and the maximal percentage of bolting plants”

✓ located verbatim in the source · abstract, characters 392–516 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Great Lakes lettuce had the maximal percentage of bolting plants.

Taxon
lettuceLactuca sativae0
Material
Great Lakese3
Outcome
percentage of bolting plantse3
Direction
maximale3

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e3

“Great Lakes was the earliest cultivar and had the highest number of seed stalks and the maximal percentage of bolting plants”

✓ located verbatim in the source · abstract, characters 392–516 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Great Lakes was the earliest lettuce cultivar.

Taxon
lettuceLactuca sativae0
Material
Great Lakese3
Outcome
earliest cultivare3

Not reportedDirection

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e3

“Great Lakes was the earliest cultivar and had the highest number of seed stalks and the maximal percentage of bolting plants”

✓ located verbatim in the source · abstract, characters 392–516 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Increasing N levels enhanced plant height, fresh weight and leaf number of lettuce.

Taxon
lettuceLactuca sativae0
Treatment
Increasing N levelse4
Outcome
plant height, fresh weight and number of leaves/plante4
Direction
enhancede4

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e4

“Increasing N levels significantly enhanced the plant height, fresh weight and number of leaves/plant”

✓ located verbatim in the source · abstract, characters 518–618 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Application of 60 kg N/fed. increased the percentage of dry matter of lettuce leaves.

Taxon
lettuceLactuca sativae0
Treatment
Application of 60 kg. N/fed.e5
Outcome
percentage of dry matter of leavese5
Direction
increasede5

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e5

“Application of 60 kg. N/fed. increased the percentage of dry matter of leaves and resulted in the highest percentage of bolting plants, seed stalks number/plant, seed yield/fed., weight of 1000 seeds and germination percentage of produced seeds”

✓ located verbatim in the source · abstract, characters 620–864 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Application of 60 kg N/fed. gave the highest percentage of bolting plants, seed stalks number and seed yield in lettuce.

Taxon
lettuceLactuca sativae0
Treatment
Application of 60 kg. N/fed.e5
Outcome
percentage of bolting plants, seed stalks number/plant, seed yield/fed.e5
Direction
higheste5

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e5

“Application of 60 kg. N/fed. increased the percentage of dry matter of leaves and resulted in the highest percentage of bolting plants, seed stalks number/plant, seed yield/fed., weight of 1000 seeds and germination percentage of produced seeds”

✓ located verbatim in the source · abstract, characters 620–864 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Application of 60 kg N/fed. gave the highest 1000-seed weight and germination percentage in lettuce.

Taxon
lettuceLactuca sativae0
Treatment
Application of 60 kg. N/fed.e5
Outcome
weight of 1000 seeds and germination percentage of produced seedse5
Direction
higheste5

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e5

“Application of 60 kg. N/fed. increased the percentage of dry matter of leaves and resulted in the highest percentage of bolting plants, seed stalks number/plant, seed yield/fed., weight of 1000 seeds and germination percentage of produced seeds”

✓ located verbatim in the source · abstract, characters 620–864 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Seed oil percentage of lettuce increased when the nitrogen application rate was raised.

Taxon
lettuceLactuca sativae0
Treatment
nitrogen application ratee6
Outcome
seed oil percentagee6
Direction
increasede6

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e6

“The seed oil percentage was also increased when the nitrogen application rate was raised”

✓ located verbatim in the source · abstract, characters 866–954 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Balady lettuce seed oil content increased when fertilized with 90 kg N/fed.

Taxon
lettuceLactuca sativae0
Material
Baladye7
Treatment
fertilized with 90 kg N/fed.e7
Outcome
oil contente7
Direction
increasee7

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e7

“Balady seeds exhibited considerable increase in its oil content when fertilized with 90 kg N/fed.”

✓ located verbatim in the source · abstract, characters 956–1053 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Using GA3 at 50 ppm increased seed stalks number, percentage of bolting plants and seed yield of lettuce.

Taxon
lettuceLactuca sativae0
Treatment
Using GA3 at 50 ppme1
Outcome
seed stalks number/plant, percentage of bolting plants, seed yielde1
Direction
increasede1

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e1

“Using GA3 at 50 ppm increased seed stalks number/plant, percentage of bolting plants, seed yield, weight of 1000 seed and germination percentage of seed”

✓ located verbatim in the source · abstract, characters 1054–1206 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Using GA3 at 50 ppm increased 1000-seed weight and germination percentage of lettuce seed.

Taxon
lettuceLactuca sativae0
Treatment
Using GA3 at 50 ppme1
Outcome
weight of 1000 seed and germination percentage of seede1
Direction
increasede1

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e1

“Using GA3 at 50 ppm increased seed stalks number/plant, percentage of bolting plants, seed yield, weight of 1000 seed and germination percentage of seed”

✓ located verbatim in the source · abstract, characters 1054–1206 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Seed oil percentage of lettuce decreased with the application of GA3.

Taxon
lettuceLactuca sativae0
Treatment
the application of GA3e2
Outcome
seed oil percentagee2
Direction
decreasede2

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e2

“However, the seed oil percentage decreased with the application of GA3”

✓ located verbatim in the source · abstract, characters 1208–1278 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Balady lettuce fertilized with 60 kg N/fed. and sprayed with 50 ppm GA3 gave the highest seed yield.

Taxon
lettuceLactuca sativae0
Material
Baladye3
Treatment
fertilized with 60 kg N/fed. and sprayed with 50 ppm GA3e3
Outcome
seed yielde3
Direction
higheste3

Not reportedComparator

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e3

“In general Balady plants fertilized with 60 kg N/fed. and sprayed with 50 ppm GA3 produced the highest seed yield”

✓ located verbatim in the source · abstract, characters 1280–1393 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Balady lettuce seed oil could supplement or substitute conventional oil types, based on fatty acid composition and physicochemical properties.

Taxon
lettuceLactuca sativae4
Material
Balady cv.e4
Outcome
could supplement or substitute the conventional oil typese4
Qualifier
fatty acid composition and other physicochemical propertiese4

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

“three cultivars of lettuce (Balady, Dark Green and Great Lakes)”

✓ located verbatim in the source · abstract, characters 30–93 · show in text ↑
e4

“The results also revealed that lettuce seed oil (Balady cv.) could supplement or substitute the conventional oil types in terms of its fatty acid composition and other physicochemical properties”

✓ located verbatim in the source · abstract, characters 1395–1589 · show in text ↑

Gibberellic acid · yield · Lactuca sativa (garden lettuce)Results differ

6 papers: 4 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

2 papers more in this group

See all 6 papers →

application · yield · Lactuca sativa (garden lettuce)Positive and negative results

38 papers: 30 positive, 8 negative or no effect

29 papers in the same direction as this paper · 8 in the opposite direction

  1. negative
  2. negative
  3. no effect

34 papers more in this group

See all 38 papers →

nitrogen · yield · Lactuca sativa (garden lettuce)Positive and negative results

79 papers: 61 positive, 18 negative or no effect

60 papers in the same direction as this paper · 17 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

75 papers more in this group

See all 79 papers →

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

249 papers: 213 positive, 36 negative or no effect

212 papers in the same direction as this paper · 34 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

245 papers more in this group

See all 249 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.