Paper · 2025 · Korean Journal of Agricultural Science

Understanding the combined effect of biochar and nitrogen fertilizer on crop yield, nitrogen use efficiency and physiological properties of corn plant

Rose Nimoh Serwaa; The Ngoc Phuong Nguyen; Taek-Keun Oh; et al.

9
claims
18
verbatim quotes
2
citations
2
research areas
✓
Open access · cc-by-nc

Abstract

Biochar has gained significant attention due to its ability to improve soil quality, reduce carbon emissions and improve crop yield.The use of only conventional fertilizer is not the way to sustainable agriculture, but the combined use with biochar can improve soil fertility and enhance nutrient uptake.This study used different biochar levels consisting of B0 (0% biochar, 0 gpot -1 ); B1 (100% biochar, 4 gpot -1 ); B2 (200% biochar, 8 gpot -1 ) each combined with nitrogen-based fertilizer (urea and slow releasing fertilizer [SRF]) applied as F1 and F2 respectively under greenhouse environment during the winter season.The data were taken 100 and 121 days after transplanting (DAT).The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.These findings give a comparable understanding of the physiological growth, grain yield, and enhanced NUE in corn production.Keywords: biochar, nitrogen use efficiency, nitrogen-based fertilizer, physiological properties and growth of plant.Collectively, these results emphasize the importance of biochar as a based fertilization for primary strategy for improving nitrogen efficiency and yield whiles also considering genotype-specific management.This underscores the necessity of tailoring fertilization strategies to crop genotype for sustainable productivity.While these findings provide significant insights, it is also important to note that the controlled greenhouse environments may not fully capture the variability present under field condition, therefore, seasonal and long-term effects were not assessed in this study.Future research should focus on multi-seasonal and field-level trials to better evaluate the broader applicability.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. 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 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced plant height by about 30% in Mibaek #2.

Taxon
corn plantZea mays subsp. mayst0
Material
Mibaek #2e0
Treatment
200% biochar with urea (B2F1)e0
Outcome
plant heighte0
Value
30%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced grain dry weight by about 200% in Mibaek #2.

Taxon
corn plantZea mays subsp. mayst0
Material
Mibaek #2e0
Treatment
200% biochar with urea (B2F1)e0
Outcome
grain dry weighte0
Value
200%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced total chlorophyll by about 100% in Mibaek #2.

Taxon
corn plantZea mays subsp. mayst0
Material
Mibaek #2e0
Treatment
200% biochar with urea (B2F1)e0
Outcome
total chlorophylle0
Value
100%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced nitrogen use efficiency (NUE) by about 95% in Mibaek #2.

Taxon
corn plantZea mays subsp. mayst0
Material
Mibaek #2e0
Treatment
200% biochar with urea (B2F1)e0
Outcome
nitrogen use efficiency (NUE)e0
Value
95%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced plant height by about 30% in Taeyangchal.

Taxon
corn plantZea mays subsp. mayst0
Material
Taeyangchale0
Treatment
200% biochar with urea (B2F1)e0
Outcome
plant heighte0
Value
30%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced grain dry weight by about 200% in Taeyangchal.

Taxon
corn plantZea mays subsp. mayst0
Material
Taeyangchale0
Treatment
200% biochar with urea (B2F1)e0
Outcome
grain dry weighte0
Value
200%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced total chlorophyll by about 100% in Taeyangchal.

Taxon
corn plantZea mays subsp. mayst0
Material
Taeyangchale0
Treatment
200% biochar with urea (B2F1)e0
Outcome
total chlorophylle0
Value
100%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

B2F1 influenced nitrogen use efficiency (NUE) by about 95% in Taeyangchal.

Taxon
corn plantZea mays subsp. mayst0
Material
Taeyangchale0
Treatment
200% biochar with urea (B2F1)e0
Outcome
nitrogen use efficiency (NUE)e0
Value
95%e0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The overall results shows that 200% biochar with urea (B2F1) had a significant influence on plant height, grain dry weight, total chlorophyll, and nitrogen use efficiency (NUE) of about 30%, 200%, 100%, 95% respectively in both Mibaek #2 and Taeyangchal.”

✓ located verbatim in the source · abstract, characters 688–942 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend biochar fertilization with genotype-specific management to improve nitrogen efficiency and yield.

Taxon
corn plantZea mays subsp. mayst0
Treatment
biochar as a based fertilizatione0
Outcome
improving nitrogen efficiency and yielde0
Qualifier
genotype-specific managemente0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Collectively, these results emphasize the importance of biochar as a based fertilization for primary strategy for improving nitrogen efficiency and yield whiles also considering genotype-specific management.”

✓ located verbatim in the source · abstract, characters 1183–1390 · show in text ↑
t0

“corn plant”

✓ located verbatim in the source · title, characters 140–150 · show in text ↑

biochar · physiology: pigments · Zea mays (maize)Positive and negative results

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nitrogen · physiology: pigments · Zea mays (maize)Positive and negative results

126 papers: 112 positive, 14 negative or no effect

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biochar · growth · Zea mays (maize)Positive and negative results

190 papers: 180 positive, 10 negative or no effect

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nitrogen · nutrient: efficiency · Zea mays (maize)Positive and negative results

194 papers: 142 positive, 52 negative or no effect

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nitrogen · growth · Zea mays (maize)Positive and negative results

748 papers: 619 positive, 129 negative or no effect

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biochar · nutrient: efficiency · Zea mays (maize)Results agree

18 papers: 18 positive, 0 negative or no effect

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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.