Paper · 2025 · Journal of Plant Nutrition

Bio-organo-chemical fertilizers: a novel approach for improving sweet marjoram plant growth, essential oil quality and nutrient content

Saad Farouk; Seham M. A. El-Gamal; Khalid M. Elhindi; et al.

11
claims
21
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Origanum majorana L. has been gaining popularity as a source of bioactive phytopharmaceutical compounds. Natural rocks (NRs, natural nutrient sources) have been potentially attractive as substitutes for nitrogen, phosphorous and potassium chemical fertilizer (CF) without any harmful impact on plant productivity. The integration of NRs with biofertilizers and CF not only supplies essential nutrients but also improves nutrient use efficiency, plant growth and quality. A two-year field trial with a completely randomized block design was conducted to assess the integrative effects of NRs, i.e. Feldspar® (potassium source), rock-phosphate® (phosphorus source) and nitrogen ore® (organic nitrogen source) with biofertilizers and CF on sweet marjoram plant growth, ion content and uptake, essential oil (EO) yield and their components. Application of 50% recommended CF + 50% NRs with biofertilizers showed maximum plant height, branch number plant−1, herbal fresh and dry weights, herbal mass yield, nitrogen %, phosphorous %, potassium %, iron concentration, zinc concentration, manganese concentration, EO %, EO yield, as compared to other treatments or control (100% recommended CF) in both cuts during two seasons. The marjoram EO has 36 components with different percentages. The highest percentage of EO constituents including β-pinene, γ-terpinene, 4-thujanol, α-pinene, linalool, 1,8-cineole, linalyl acetate, cis-carveol, epiglobulol, caryophyllene, cis-sesquisabinene hydrate and α-himachalene was recorded under 50% of recommended CF + 50% NRs with biofertilizers treatment over all treatments. Conclusively, it is possible to replace 50% of CF quantity through NRs with biofertilizer application, without any drastic impact on plant growth, essential oil yield and constituents of sweet marjoram.

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Claims 11

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment maximized plant height and branch number relative to other treatments and the chemical fertilizer control.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% recommended CF + 50% NRs with biofertilizerse0
Outcome
plant height, branch number plant−1e0
Direction
maximume0
Qualifier
in both cuts during two seasonse0
Comparator
other treatments or control (100% recommended CF)e0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“Application of 50% recommended CF + 50% NRs with biofertilizers showed maximum plant height, branch number plant−1, herbal fresh and dry weights, herbal mass yield, nitrogen %, phosphorous %, potassium %, iron concentration, zinc concentration, manganese concentration, EO %, EO yield, as compared to other treatments or control (100% recommended CF) in both cuts during two seasons.”

✓ located verbatim in the source · abstract, characters 837–1220 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment maximized herbal fresh and dry weights and herbal mass yield.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% recommended CF + 50% NRs with biofertilizerse0
Outcome
herbal fresh and dry weights, herbal mass yielde0
Direction
maximume0
Comparator
other treatments or control (100% recommended CF)e0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“Application of 50% recommended CF + 50% NRs with biofertilizers showed maximum plant height, branch number plant−1, herbal fresh and dry weights, herbal mass yield, nitrogen %, phosphorous %, potassium %, iron concentration, zinc concentration, manganese concentration, EO %, EO yield, as compared to other treatments or control (100% recommended CF) in both cuts during two seasons.”

✓ located verbatim in the source · abstract, characters 837–1220 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment maximized nitrogen, phosphorous and potassium percentages.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% recommended CF + 50% NRs with biofertilizerse0
Outcome
nitrogen %, phosphorous %, potassium %e0
Direction
maximume0
Comparator
other treatments or control (100% recommended CF)e0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“Application of 50% recommended CF + 50% NRs with biofertilizers showed maximum plant height, branch number plant−1, herbal fresh and dry weights, herbal mass yield, nitrogen %, phosphorous %, potassium %, iron concentration, zinc concentration, manganese concentration, EO %, EO yield, as compared to other treatments or control (100% recommended CF) in both cuts during two seasons.”

✓ located verbatim in the source · abstract, characters 837–1220 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment maximized iron, zinc and manganese concentrations.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% recommended CF + 50% NRs with biofertilizerse0
Outcome
iron concentration, zinc concentration, manganese concentratione0
Direction
maximume0
Comparator
other treatments or control (100% recommended CF)e0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“Application of 50% recommended CF + 50% NRs with biofertilizers showed maximum plant height, branch number plant−1, herbal fresh and dry weights, herbal mass yield, nitrogen %, phosphorous %, potassium %, iron concentration, zinc concentration, manganese concentration, EO %, EO yield, as compared to other treatments or control (100% recommended CF) in both cuts during two seasons.”

✓ located verbatim in the source · abstract, characters 837–1220 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment maximized essential oil percentage and yield.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% recommended CF + 50% NRs with biofertilizerse0
Outcome
EO %, EO yielde0
Direction
maximume0
Comparator
other treatments or control (100% recommended CF)e0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“Application of 50% recommended CF + 50% NRs with biofertilizers showed maximum plant height, branch number plant−1, herbal fresh and dry weights, herbal mass yield, nitrogen %, phosphorous %, potassium %, iron concentration, zinc concentration, manganese concentration, EO %, EO yield, as compared to other treatments or control (100% recommended CF) in both cuts during two seasons.”

✓ located verbatim in the source · abstract, characters 837–1220 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Marjoram essential oil contained 36 components.

Taxon
marjorame0
Outcome
EOe0
Value
36 componentse0

Verbatim

e0

“The marjoram EO has 36 components with different percentages.”

✓ located verbatim in the source · abstract, characters 1221–1282 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment gave the highest percentages of β-pinene, γ-terpinene and 4-thujanol.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% of recommended CF + 50% NRs with biofertilizers treatmente0
Outcome
percentage of EO constituents including β-pinene, γ-terpinene, 4-thujanole0
Direction
higheste0
Comparator
all treatmentse0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“The highest percentage of EO constituents including β-pinene, γ-terpinene, 4-thujanol, α-pinene, linalool, 1,8-cineole, linalyl acetate, cis-carveol, epiglobulol, caryophyllene, cis-sesquisabinene hydrate and α-himachalene was recorded under 50% of recommended CF + 50% NRs with biofertilizers treatment over all treatments.”

✓ located verbatim in the source · abstract, characters 1283–1607 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment gave the highest percentages of α-pinene, linalool and 1,8-cineole.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% of recommended CF + 50% NRs with biofertilizers treatmente0
Outcome
α-pinene, linalool, 1,8-cineolee0
Direction
higheste0
Comparator
all treatmentse0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“The highest percentage of EO constituents including β-pinene, γ-terpinene, 4-thujanol, α-pinene, linalool, 1,8-cineole, linalyl acetate, cis-carveol, epiglobulol, caryophyllene, cis-sesquisabinene hydrate and α-himachalene was recorded under 50% of recommended CF + 50% NRs with biofertilizers treatment over all treatments.”

✓ located verbatim in the source · abstract, characters 1283–1607 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment gave the highest percentages of linalyl acetate, cis-carveol and epiglobulol.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% of recommended CF + 50% NRs with biofertilizers treatmente0
Outcome
linalyl acetate, cis-carveol, epiglobulole0
Direction
higheste0
Comparator
all treatmentse0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“The highest percentage of EO constituents including β-pinene, γ-terpinene, 4-thujanol, α-pinene, linalool, 1,8-cineole, linalyl acetate, cis-carveol, epiglobulol, caryophyllene, cis-sesquisabinene hydrate and α-himachalene was recorded under 50% of recommended CF + 50% NRs with biofertilizers treatment over all treatments.”

✓ located verbatim in the source · abstract, characters 1283–1607 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined fertilizer treatment gave the highest percentages of caryophyllene, cis-sesquisabinene hydrate and α-himachalene.

Taxon
sweet marjoramOriganum majoranat0
Treatment
50% of recommended CF + 50% NRs with biofertilizers treatmente0
Outcome
caryophyllene, cis-sesquisabinene hydrate and α-himachalenee0
Direction
higheste0
Comparator
all treatmentse0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“The highest percentage of EO constituents including β-pinene, γ-terpinene, 4-thujanol, α-pinene, linalool, 1,8-cineole, linalyl acetate, cis-carveol, epiglobulol, caryophyllene, cis-sesquisabinene hydrate and α-himachalene was recorded under 50% of recommended CF + 50% NRs with biofertilizers treatment over all treatments.”

✓ located verbatim in the source · abstract, characters 1283–1607 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors conclude that half of chemical fertilizer can be replaced with natural rocks and biofertilizers for sweet marjoram without drastic impacts.

Taxon
sweet marjoramOriganum majoranat0
Outcome
replace 50% of CF quantity through NRs with biofertilizer applicatione0

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

Origanum majorana
Origanum majorana · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“sweet marjoram”

✓ located verbatim in the source · title, characters 64–78 · show in text ↑
e0

“it is possible to replace 50% of CF quantity through NRs with biofertilizer application, without any drastic impact on plant growth, essential oil yield and constituents of sweet marjoram.”

✓ located verbatim in the source · abstract, characters 1622–1810 · show in text ↑

fertilization · yield · Origanum majorana (sweet marjoram)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

fertilization · nutrient: content · Origanum majorana (sweet marjoram)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 · yield · Origanum majorana (sweet marjoram)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 · growth · Origanum majorana (sweet marjoram)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 →

fertilization · growth · Origanum majorana (sweet marjoram)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 →

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.