Paper · 2025 · Journal of Kerbala for Agricultural Sciences

The effect of adding humic acid and bio-fertilizers on the chemical properties of date palm leaves, Barhi

Sajjad Abdul Hassan Abadi Al Taher

12
claims
24
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

An experiment was carried out in the horticultural development project of the Directorate of Agriculture in Karbala, located in the Um Gharagher area / Al-Husseiniya District - Karbala Governorate, during the growing season 2024 to investigate the response of palm trees of the Barhi variety to fertilization with humic acid and bio-fertilizers in the chemical qualities of date palm leaves Barhi variety. The study was carried out as a factorial experiment (4×4) according to the Completely randomized block design (R.C.B.D). with three replicates, the study included two factors, the first is the addition of humic acid in four concentrations (0, 5, 10 and 15) g 20 liters per palm-1 in four batches and the second is the addition of bio-fertilizers in four concentrations (Control and adding Azotobacter chrooccum bacteria at a concentration of 150 ml 20 liters per palm-1 and Bacillus megatherium at a concentration of 150 ml 20 liters per palm -1 and Azotobacter chrooccum bacteria at a concentration of 75 ml + adding Bacillus megatherium bacteria at a concentration of 75 ml) 20 liters per palm -1. The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively. The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively. As for the bilateral interaction between the two study factors, the treatment (A15B3) excelled by recording the highest average of all the studied traits.

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 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

humic acid (A15) gave the highest leaf chlorophyll of 0.970 mg g-1.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leafe0
Treatment
humic acid (A15)e0
Outcome
chlorophylle0
Direction
higheste0
Value
0.970 mg g-1e0
Comparator
rest of the coefficientse0

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively.”

✓ located verbatim in the source · abstract, characters 1106–1428 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

humic acid (A15) gave the highest leaf carbohydrates of 12.376%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leafe0
Treatment
humic acid (A15)e0
Outcome
carbohydratese0
Direction
higheste0
Value
12.376%e0
Comparator
rest of the coefficientse0

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively.”

✓ located verbatim in the source · abstract, characters 1106–1428 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

humic acid (A15) gave the highest leaf protein of 6.397%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leafe0
Treatment
humic acid (A15)e0
Outcome
proteine0
Direction
higheste0
Value
6.397%e0
Comparator
rest of the coefficientse0

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively.”

✓ located verbatim in the source · abstract, characters 1106–1428 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

humic acid (A15) gave the highest leaf nitrogen of 1.024%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leafe0
Treatment
humic acid (A15)e0
Outcome
nitrogene0
Direction
higheste0
Value
1.024%e0
Comparator
rest of the coefficientse0

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively.”

✓ located verbatim in the source · abstract, characters 1106–1428 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

humic acid (A15) gave the highest leaf phosphorus of 0.495%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leafe0
Treatment
humic acid (A15)e0
Outcome
phosphoruse0
Direction
higheste0
Value
0.495%e0
Comparator
rest of the coefficientse0

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively.”

✓ located verbatim in the source · abstract, characters 1106–1428 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

humic acid (A15) gave the highest leaf potassium of 1.293%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leafe0
Treatment
humic acid (A15)e0
Outcome
potassiume0
Direction
higheste0
Value
1.293%e0
Comparator
rest of the coefficientse0

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the ground addition treatment of humic acid (A15) outperformed the rest of the coefficients by giving the highest averages in the total leaf content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.970 mg g-1, 12.376%, 6.397%, 1.024%, 0.495% and 1.293%), respectively.”

✓ located verbatim in the source · abstract, characters 1106–1428 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

bio-fertilizers (B3) gave the highest leaf chlorophyll of 0.993 mg g-1.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leavese0
Treatment
bio-fertilizers (B3)e0
Outcome
chlorophylle0
Direction
higheste0
Value
0.993 mg g-1e0

Not reportedComparator

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively.”

✓ located verbatim in the source · abstract, characters 1429–1691 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

bio-fertilizers (B3) gave the highest leaf carbohydrates of 12.535%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leavese0
Treatment
bio-fertilizers (B3)e0
Outcome
carbohydratese0
Direction
higheste0
Value
12.535%e0

Not reportedComparator

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively.”

✓ located verbatim in the source · abstract, characters 1429–1691 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

bio-fertilizers (B3) gave the highest leaf protein of 6.397%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leavese0
Treatment
bio-fertilizers (B3)e0
Outcome
proteine0
Direction
higheste0
Value
6.397%e0

Not reportedComparator

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively.”

✓ located verbatim in the source · abstract, characters 1429–1691 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

bio-fertilizers (B3) gave the highest leaf nitrogen of 1.047%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leavese0
Treatment
bio-fertilizers (B3)e0
Outcome
nitrogene0
Direction
higheste0
Value
1.047%e0

Not reportedComparator

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively.”

✓ located verbatim in the source · abstract, characters 1429–1691 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

bio-fertilizers (B3) gave the highest leaf phosphorus of 0.503%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leavese0
Treatment
bio-fertilizers (B3)e0
Outcome
phosphoruse0
Direction
higheste0
Value
0.503%e0

Not reportedComparator

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively.”

✓ located verbatim in the source · abstract, characters 1429–1691 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

bio-fertilizers (B3) gave the highest leaf potassium of 1.290%.

Taxon
date palmPhoenix dactyliferat0
Organ / stage
leavese0
Treatment
bio-fertilizers (B3)e0
Outcome
potassiume0
Direction
higheste0
Value
1.290%e0

Not reportedComparator

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

Phoenix dactylifera
Phoenix dactylifera · TaxonEJ Burns · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The ground addition treatment of bio-fertilizers (B3) also gave the highest averages in the total leaves content of chlorophyll, carbohydrates, protein, nitrogen, phosphorus, and potassium (0.993 mg g-1, 12.535%, 6.397%, 1.047%, 0.503% and 1.290%), respectively.”

✓ located verbatim in the source · abstract, characters 1429–1691 · show in text ↑
t0

“date palm”

✓ located verbatim in the source · title, characters 82–91 · show in text ↑

other · nutrient: content · Phoenix dactylifera (date palm)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

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

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

inoculation · quality: sugar starch · Phoenix dactylifera (date palm)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

inoculation · quality: protein · Phoenix dactylifera (date palm)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

other · quality: sugar starch · Phoenix dactylifera (date palm)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

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

inoculation · nutrient: content · Phoenix dactylifera (date palm)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

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

inoculation · physiology: pigments · Phoenix dactylifera (date palm)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

other · physiology: pigments · Phoenix dactylifera (date palm)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.