Abstract
Hidden hunger is an emerging challenge for scientists, especially connected to the agriculture sector because over two billion people are facing it globally. This issue is more common in developing countries which have less access to a diverse diet due to their low income. Different potential practices are introduced to minimize the pressure of malnutrition but agronomic biofortification is being considered best practice to improve the contents of micronutrient in grains. A field based study was executed to explore the impact of zinc sulphate (ZnSO 4 ) and iron sulphate (FeSO 4 ) on productivity and grain quality of maize crop. Sole and combined application of ZnSO 4 and FeSO 4 either via soil or/and plant foliage not only enhanced the yield attributes of maize crop but grain quality was also improved. Soil supplementation of ZnSO 4 (10 kg ha -1 ) produced maximum plant height and cob weight. Combined treatment of ZnSO 4 (10 kg ha -1 ) and FeSO 4 (12 kg ha -1 ) through soil produced more grains per cob, 1000-grain weight, biological and grain yields. Foliar applied 0.1% ZnSO 4 and 0.3% FeSO 4 produced highest chlorophyll contents. Foliar treatment of 0.1% ZnSO 4 and 0.3% FeSO 4 improved the concentration of zinc and iron in grains, respectively. Combined treatment of 10 kg ha -1 of ZnSO 4 and 12 kg ha -1 of FeSO 4 through soil improves the yield attributes while foliar spray of 0.1% ZnSO 4 and 0.3% FeSO 4 enhances quality parameters. Overall, foliar spray approach is more applicable regarding nutrients availability for optimum development and growth of crop and improved grain quality.
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Claims 9
Claim · model-written summary
Sole and combined zinc and iron sulfate application improved maize yield attributes.
- Treatment
- Sole and combined application of ZnSO 4 and FeSO 4e0
- Outcome
- yield attributese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Sole and combined application of ZnSO 4 and FeSO 4 either via soil or/and plant foliage not only enhanced the yield attributes of maize crop”
Claim · model-written summary
Sole and combined zinc and iron sulfate application improved maize grain quality.
- Treatment
- Sole and combined application of ZnSO 4 and FeSO 4e0
- Outcome
- grain qualitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Sole and combined application of ZnSO 4 and FeSO 4 either via soil or/and plant foliage not only enhanced the yield attributes of maize crop but grain quality was also improved”
Claim · model-written summary
Soil zinc sulfate at 10 kg ha -1 produced maximum maize plant height and cob weight.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Soil supplementation of ZnSO 4 (10 kg ha -1 ) produced maximum plant height and cob weight”
t0“maize”
Claim · model-written summary
Combined soil zinc and iron sulfate produced more grains per cob and greater 1000-grain weight.
- Treatment
- Combined treatment of ZnSO 4 (10 kg ha -1 ) and FeSO 4 (12 kg ha -1 ) through soile0
- Outcome
- grains per cob, 1000-grain weighte0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Combined treatment of ZnSO 4 (10 kg ha -1 ) and FeSO 4 (12 kg ha -1 ) through soil produced more grains per cob, 1000-grain weight, biological and grain yields”
t0“maize”
Claim · model-written summary
Combined soil zinc and iron sulfate produced greater biological and grain yields.
- Treatment
- Combined treatment of ZnSO 4 (10 kg ha -1 ) and FeSO 4 (12 kg ha -1 ) through soile0
- Outcome
- biological and grain yieldse0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Combined treatment of ZnSO 4 (10 kg ha -1 ) and FeSO 4 (12 kg ha -1 ) through soil produced more grains per cob, 1000-grain weight, biological and grain yields”
t0“maize”
Claim · model-written summary
Foliar 0.1% zinc sulfate with 0.3% iron sulfate produced the highest chlorophyll content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar applied 0.1% ZnSO 4 and 0.3% FeSO 4 produced highest chlorophyll contents”
t0“maize”
Claim · model-written summary
Foliar 0.1% zinc sulfate improved grain zinc concentration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar treatment of 0.1% ZnSO 4 and 0.3% FeSO 4 improved the concentration of zinc and iron in grains, respectively”
t0“maize”
Claim · model-written summary
Foliar 0.3% iron sulfate improved grain iron concentration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar treatment of 0.1% ZnSO 4 and 0.3% FeSO 4 improved the concentration of zinc and iron in grains, respectively”
t0“maize”
Claim · model-written summary
The authors regard foliar spraying as more applicable for nutrient availability, crop growth and grain quality.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Overall, foliar spray approach is more applicable regarding nutrients availability for optimum development and growth of crop and improved grain quality”
t0“maize”
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