Paper · 2026 · Asian Research Journal of Agriculture

Quality of Summer Fodder Maize (Zea mays L.) Influenced by Agronomic Fortification with Zinc and Iron

Avtar Singh; R. M. Solanki; Rupesh Kumar Meena; et al.

10
claims
20
verbatim quotes
0
citations
2
research areas
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Open access

Abstract

Deficiencies of zinc and iron in soils not only diminish the productivity of forage crops but also lead to insufficient dietary intake of these micronutrients in livestock. The present study aimed to assess the quality of summer fodder maize (*Zea mays* L.) as influenced by agronomic biofortification with zinc and iron. A field experiment was carried out during the summer season of 2019 on medium black calcareous soil in Junagadh. The study included ten treatment combinations involving soil and foliar applications of 0.2% ZnSO₄ and 1.0% FeSO₄, along with the recommended dose of fertilizers (RDF), arranged in a randomized block design with three replications. The results revealed that nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS), except for crude fiber content. Among all the treatments, the application of 100:60:40 kg NPK ha⁻¹ along with foliar application of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 DAS (T7) was the most effective in improving green and dry fodder yield and fodder quality of maize, whereas the control treatment (T1) recorded the lowest quality parameters. Therefore, application of 100:60:40 kg NPK ha⁻¹ along with foliar spraying of 0.2% ZnSO₄ and 1.0% FeSO₄ are found most effective for improving fodder quality to support better animal health and productivity.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize nitrogen of 1.63%.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
nitrogene0
Direction
maximume0
Value
1.63%e0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize phosphorus of 0.26%.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
phosphoruse0
Direction
maximume0
Value
0.26%e0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize potassium of 1.45%.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
potassiume0
Direction
maximume0
Value
1.45%e0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize Mn of 54.83.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
Mne0
Direction
maximume0
Value
54.83e0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize Cu of 31.53.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
Cue0
Direction
maximume0
Value
31.53e0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize Zn of 27.50.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
Zne0
Direction
maximume0
Value
27.50e0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined RDF and foliar zinc and iron produced maximum maize Fe of 143.77 ppm.

Taxon
fodder maizee0
Treatment
100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)e0
Outcome
Fee0
Direction
maximume0
Value
143.77 ppme0

Not reportedComparator

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“nitrogen (1.63%), phosphorus (0.26%), and potassium (1.45%) and among micro-nutrients Mn, Cu, Zn and Fe of 54.83, 31.53, 27.50 and 143.77 ppm, respectively were recorded maximum when fodder maize was fertilized with the application of 100% RDF combined with foliar sprays of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 days after sowing (DAS)”

✓ located verbatim in the source · abstract, characters 693–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T7 most effectively improved green and dry maize fodder yield.

Taxon
maizeZea mayse0
Treatment
100:60:40 kg NPK ha⁻¹ along with foliar application of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 DAS (T7)e0
Outcome
green and dry fodder yielde0
Direction
most effectivee0
Comparator
control treatment (T1)e0

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

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“the application of 100:60:40 kg NPK ha⁻¹ along with foliar application of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 DAS (T7) was the most effective in improving green and dry fodder yield and fodder quality of maize, whereas the control treatment (T1) recorded the lowest quality parameters”

✓ located verbatim in the source · abstract, characters 1090–1377 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

T7 most effectively improved maize fodder quality, while the control had the lowest quality parameters.

Taxon
maizeZea mayse0
Treatment
100:60:40 kg NPK ha⁻¹ along with foliar application of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 DAS (T7)e0
Outcome
fodder qualitye0
Direction
most effectivee0
Comparator
control treatment (T1)e0

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

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“the application of 100:60:40 kg NPK ha⁻¹ along with foliar application of 0.2% ZnSO₄ and 1.0% FeSO₄ at 30 and 45 DAS (T7) was the most effective in improving green and dry fodder yield and fodder quality of maize, whereas the control treatment (T1) recorded the lowest quality parameters”

✓ located verbatim in the source · abstract, characters 1090–1377 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend NPK and foliar zinc and iron to improve fodder quality.

Taxon
Fodder Maizet0
Treatment
100:60:40 kg NPK ha⁻¹ along with foliar spraying of 0.2% ZnSO₄ and 1.0% FeSO₄e0
Outcome
improving fodder qualitye0

Verbatim

t0

“Fodder Maize (Zea mays L.)”

✓ located verbatim in the source · title, characters 18–44 · show in text ↑
e0

“application of 100:60:40 kg NPK ha⁻¹ along with foliar spraying of 0.2% ZnSO₄ and 1.0% FeSO₄ are found most effective for improving fodder quality”

✓ located verbatim in the source · abstract, characters 1390–1536 · show in text ↑

zinc sulfate · yield · Zea mays (maize)Results differ

128 papers: 124 positive, 4 negative or no effect

123 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

124 papers more in this group

See all 128 papers →

iron(2+) sulfate (anhydrous) · nutrient: content · Zea mays (maize)Positive and negative results

12 papers: 11 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

iron(2+) sulfate (anhydrous) · yield · Zea mays (maize)Positive and negative results

23 papers: 22 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

zinc sulfate · nutrient: content · Zea mays (maize)Positive and negative results

46 papers: 41 positive, 5 negative or no effect

40 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

42 papers more in this group

See all 46 papers →

zinc sulfate · quality: general · Zea mays (maize)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 →

application · quality: general · Zea mays (maize)Positive and negative results

29 papers: 23 positive, 6 negative or no effect

22 papers in the same direction as this paper · 1 in the opposite direction · 5 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

25 papers more in this group

See all 29 papers →

fertilization · quality: general · Zea mays (maize)Positive and negative results

103 papers: 86 positive, 17 negative or no effect

85 papers in the same direction as this paper · 11 in the opposite direction · 6 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

99 papers more in this group

See all 103 papers →

application · nutrient: content · Zea mays (maize)Positive and negative results

161 papers: 151 positive, 10 negative or no effect

150 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

157 papers more in this group

See all 161 papers →

8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.