Paper · 2026 · Journal of Agriculture and Food Research

Integrated nutrient management improves maize productivity, nutrient-use efficiency, soil fertility, and economic returns

Mohd Arif; R. Pourouchottamane; Ravindra Kumar; et al.

12
claims
23
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Maize production is increasingly constrained by soil degradation, climate variability, and inefficient nutrient use. Excessive reliance on inorganic/synthetic fertilizers reduces soil organic carbon and created nutrient imbalances, highlighting the need for integrated nutrient management (INM) strategies to improve productivity, efficiency, and soil health. A two year (2021 and 2022) field experiment was conducted during the kharif seasons. Treatments comprised three organic manures: goat manure, poultry manure, and vermicompost, combined with five fertilizer levels (0, 25, 50, 75, and 100% of the recommended dose of fertilizers, RDF).Poultry manure (PM) + 100% RDF produced the highest cob yield (7.09 t ha -1 ), while vermicompost (VC) + 100% RDF resulted in maximum grain yield (5.31 t ha -1 ). These yields were statistically comparable with both 75% and 100% RDF levels across all organic manures; however, the 75% RDF level appears more suitable for scalability, as it maintained similar productivity while reducing fertilizer input requirements. Maximum net returns and nutrient-use efficiency (NUE) were achieved with goat manure (GM) plus 100% RDF , however, these values were statistically comparable with both 75% and 100% RDF levels under GM and PM treatments, indicating that the 75% RDF level may be a more scalable option due to reduced fertilizer input without significant loss in economic returns or NUE. Integrating organic manures with mineral fertilizers improved maize productivity, NUE, soil fertility, and profitability. Optimized fertilizer application (75–100%) with organic inputs offers a practical and scalable strategy for resilient, resource-efficient maize production.

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

Poultry manure plus 100% RDF gave the highest cob yield, 7.09 t ha -1.

Taxon
maizeZea mayst0
Treatment
Poultry manure (PM) + 100% RDFe0
Outcome
cob yielde0
Direction
higheste0
Value
7.09 t ha -1e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Poultry manure (PM) + 100% RDF produced the highest cob yield (7.09 t ha -1 )”

✓ located verbatim in the source · abstract, characters 643–720 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Vermicompost plus 100% RDF gave maximum grain yield, 5.31 t ha -1.

Taxon
maizeZea mayst0
Treatment
vermicompost (VC) + 100% RDFe0
Outcome
grain yielde0
Direction
maximume0
Value
5.31 t ha -1e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“vermicompost (VC) + 100% RDF resulted in maximum grain yield (5.31 t ha -1 )”

✓ located verbatim in the source · abstract, characters 728–804 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Yields at 75% and 100% RDF were statistically comparable across organic manures.

Taxon
maizeZea mayst0
Treatment
75%e0
Outcome
yieldse0
Comparator
100% RDFe0

Not reportedDirection

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“These yields were statistically comparable with both 75% and 100% RDF levels across all organic manures”

✓ located verbatim in the source · abstract, characters 806–909 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Goat manure plus 100% RDF achieved maximum net returns.

Taxon
maizeZea mayst0
Treatment
goat manure (GM) plus 100% RDFe0
Outcome
net returnse0
Direction
Maximume0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Maximum net returns and nutrient-use efficiency (NUE) were achieved with goat manure (GM) plus 100% RDF”

✓ located verbatim in the source · abstract, characters 1061–1164 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Goat manure plus 100% RDF achieved maximum nutrient-use efficiency.

Taxon
maizeZea mayst0
Treatment
goat manure (GM) plus 100% RDFe0
Outcome
nutrient-use efficiency (NUE)e0
Direction
Maximume0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Maximum net returns and nutrient-use efficiency (NUE) were achieved with goat manure (GM) plus 100% RDF”

✓ located verbatim in the source · abstract, characters 1061–1164 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Net returns were statistically comparable at 75% and 100% RDF under goat and poultry manure.

Taxon
maizeZea mayst0
Treatment
75%e0
Outcome
valuese0
Comparator
100% RDFe0

Not reportedDirection

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“these values were statistically comparable with both 75% and 100% RDF levels under GM and PM treatments”

✓ located verbatim in the source · abstract, characters 1176–1279 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Nutrient-use efficiency was statistically comparable at 75% and 100% RDF under goat and poultry manure.

Taxon
maizeZea mayst0
Treatment
75%e0
Outcome
nutrient-use efficiency (NUE)e0
Comparator
100% RDFe0

Not reportedDirection

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Maximum net returns and nutrient-use efficiency (NUE) were achieved with goat manure (GM) plus 100% RDF , however, these values were statistically comparable with both 75% and 100% RDF levels under GM and PM treatments”

✓ located verbatim in the source · abstract, characters 1061–1279 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Integrating organic manures with mineral fertilizers improved maize productivity.

Taxon
maizeZea mayse0
Treatment
Integrating organic manures with mineral fertilizerse0
Outcome
maize productivitye0
Direction
improvede0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Integrating organic manures with mineral fertilizers improved maize productivity, NUE, soil fertility, and profitability”

✓ located verbatim in the source · abstract, characters 1430–1550 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Integrating organic manures with mineral fertilizers improved maize nutrient-use efficiency.

Taxon
maizeZea mayst0
Treatment
Integrating organic manures with mineral fertilizerse0
Outcome
NUEe0
Direction
improvede0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Integrating organic manures with mineral fertilizers improved maize productivity, NUE, soil fertility, and profitability”

✓ located verbatim in the source · abstract, characters 1430–1550 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Integrating organic manures with mineral fertilizers improved soil fertility.

Taxon
maizeZea mayst0
Treatment
Integrating organic manures with mineral fertilizerse0
Outcome
soil fertilitye0
Direction
improvede0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Integrating organic manures with mineral fertilizers improved maize productivity, NUE, soil fertility, and profitability”

✓ located verbatim in the source · abstract, characters 1430–1550 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Integrating organic manures with mineral fertilizers improved profitability.

Taxon
maizeZea mayst0
Treatment
Integrating organic manures with mineral fertilizerse0
Outcome
profitabilitye0
Direction
improvede0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑
e0

“Integrating organic manures with mineral fertilizers improved maize productivity, NUE, soil fertility, and profitability”

✓ located verbatim in the source · abstract, characters 1430–1550 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend 75% RDF with organic inputs as a scalable maize production option.

Taxon
maizeZea mayst0
Treatment
75% RDFe0
Outcome
more suitable for scalabilitye0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the 75% RDF level appears more suitable for scalability, as it maintained similar productivity while reducing fertilizer input requirements”

✓ located verbatim in the source · abstract, characters 920–1059 · show in text ↑
t0

“maize”

✓ located verbatim in the source · title, characters 40–45 · show in text ↑

fertilization · nutrient: efficiency · Zea mays (maize)Results differ

189 papers: 174 positive, 15 negative or no effect

173 papers in the same direction as this paper · 12 in the opposite direction · 3 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

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

16 papers: 14 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

12 papers more in this group

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organic · soil: chemistry · Zea mays (maize)Positive and negative results

78 papers: 73 positive, 5 negative or no effect

72 papers in the same direction as this paper · 3 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

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fertilization · soil: chemistry · Zea mays (maize)Positive and negative results

339 papers: 303 positive, 36 negative or no effect

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

  1. positive
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organic · yield · Zea mays (maize)Positive and negative results

373 papers: 330 positive, 43 negative or no effect

329 papers in the same direction as this paper · 32 in the opposite direction · 11 reporting no difference from an alternative

  1. no effect
  2. negative
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fertilization · yield · Zea mays (maize)Positive and negative results

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative

  1. positive
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  3. positive

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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.