Paper · 2025 · Scientific Reports

Synergistic role of potassium fertilizer and kinetin in mitigating iron toxicity and enhancing yield in lowland rice

Jevelin Swain; R. K. Panda; R. K. Nayak; et al.

10
claims
21
verbatim quotes
1
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

⁺ in the soil can reduce yield by 12-100% depending on genotype, stress severity, and soil fertility. Accordingly, two years of field experiment coined with split-plot design was conducted during the wet seasons of 2022 and 2023 at the Central Farm, Odisha University of Agriculture and Technology, Bhubaneswar. Where three replicated plots with five rice genotypes as main, while subplots received five K fertilizer levels with or without foliar kinetin (200 mg/L). Percent yield increased with both sole K application (62.42%-72.85%) and combined K with kinetin (86.39%-113.36(%), indicating that K alone was insufficient to overcome iron toxicity. Kinetin enhanced sink capacity and promoted efficient translocation of photosynthates into filled grains, improving grain weight per panicle. Increasing K doses with kinetin improved morphological traits, photosynthetic pigments, and translocation of proteins and carbohydrates from source to sink. The combined treatment alleviated Fe toxicity by limiting Fe uptake, reducing ROS, MDA, proline, and phenolics and regulating antioxidant enzyme activity. Tejaswini, treated with 100-120 kg K₂O/ha and two kinetin sprays, achieved the highest yield gains (110-113%), demonstrating its potential for sustainable rice production in iron-toxic lowlands.

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sole potassium application increased rice yield by 62.42% to 72.85%.

Taxon
lowland ricet0
Treatment
sole K applicatione1
Outcome
yielde1
Direction
increasede1
Value
62.42%-72.85%e1
Setting
Central Farm, Odisha University of Agriculture and Technology, Bhubanesware6

Not reportedComparator

Verbatim

e1

“Percent yield increased with both sole K application (62.42%-72.85%) and combined K with kinetin (86.39%-113.36(%)”

✓ located verbatim in the source · abstract, characters 467–581 · show in text ↑
e6

“two years of field experiment coined with split-plot design was conducted during the wet seasons of 2022 and 2023 at the Central Farm, Odisha University of Agriculture and Technology, Bhubaneswar”

✓ located verbatim in the source · abstract, characters 115–310 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined potassium and kinetin increased rice yield by 86.39% to 113.36%.

Taxon
lowland ricet0
Treatment
combined K with kinetine1
Outcome
yielde1
Direction
increasede1
Value
86.39%-113.36(%)e1

Not reportedComparator

Verbatim

e1

“Percent yield increased with both sole K application (62.42%-72.85%) and combined K with kinetin (86.39%-113.36(%)”

✓ located verbatim in the source · abstract, characters 467–581 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Kinetin improved grain weight per panicle.

Taxon
lowland ricet0
Treatment
Kinetine2
Outcome
grain weight per paniclee2
Direction
improvinge2

Not reportedComparator

Verbatim

e2

“Kinetin enhanced sink capacity and promoted efficient translocation of photosynthates into filled grains, improving grain weight per panicle”

✓ located verbatim in the source · abstract, characters 651–791 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Kinetin enhanced sink capacity and translocation of photosynthates into filled grains.

Taxon
lowland ricet0
Treatment
Kinetine2
Outcome
sink capacitye2
Direction
enhancede2
Qualifier
translocation of photosynthates into filled grainse2

Not reportedComparator

Verbatim

e2

“Kinetin enhanced sink capacity and promoted efficient translocation of photosynthates into filled grains, improving grain weight per panicle”

✓ located verbatim in the source · abstract, characters 651–791 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing K doses with kinetin improved morphological traits, photosynthetic pigments, and translocation of proteins and carbohydrates from source to sink.

Taxon
lowland ricet0
Treatment
Increasing K doses with kinetine3
Outcome
morphological traits, photosynthetic pigments, and translocation of proteins and carbohydratese3
Direction
improvede3

Not reportedComparator

Verbatim

e3

“Increasing K doses with kinetin improved morphological traits, photosynthetic pigments, and translocation of proteins and carbohydrates from source to sink”

✓ located verbatim in the source · abstract, characters 793–948 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined treatment limited iron uptake by rice under iron toxicity.

Taxon
lowland ricet0
Treatment
combined treatmente4
Outcome
Fe uptakee4
Direction
limitinge4

Not reportedComparator

Verbatim

e4

“The combined treatment alleviated Fe toxicity by limiting Fe uptake, reducing ROS, MDA, proline, and phenolics and regulating antioxidant enzyme activity”

✓ located verbatim in the source · abstract, characters 950–1103 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined treatment reduced ROS, MDA, and proline in rice.

Taxon
lowland ricet0
Treatment
combined treatmente4
Outcome
ROS, MDA, prolinee4
Direction
reducinge4

Not reportedComparator

Verbatim

e4

“The combined treatment alleviated Fe toxicity by limiting Fe uptake, reducing ROS, MDA, proline, and phenolics and regulating antioxidant enzyme activity”

✓ located verbatim in the source · abstract, characters 950–1103 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined treatment reduced phenolics in rice.

Taxon
lowland ricet0
Treatment
combined treatmente4
Outcome
phenolicse4
Direction
reducinge4

Not reportedComparator

Verbatim

e4

“The combined treatment alleviated Fe toxicity by limiting Fe uptake, reducing ROS, MDA, proline, and phenolics and regulating antioxidant enzyme activity”

✓ located verbatim in the source · abstract, characters 950–1103 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The combined treatment regulated antioxidant enzyme activity in rice.

Taxon
lowland ricet0
Treatment
combined treatmente4
Outcome
antioxidant enzyme activitye4
Direction
regulatinge4

Not reportedComparator

Verbatim

e4

“The combined treatment alleviated Fe toxicity by limiting Fe uptake, reducing ROS, MDA, proline, and phenolics and regulating antioxidant enzyme activity”

✓ located verbatim in the source · abstract, characters 950–1103 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tejaswini treated with 100-120 kg K₂O/ha and two kinetin sprays achieved the highest yield gains (110-113%).

Taxon
lowland ricet0
Material
Tejaswinie5
Treatment
100-120 kg K₂O/ha and two kinetin sprayse5
Outcome
yield gainse5
Direction
higheste5
Value
110-113%e5

Not reportedComparator

Verbatim

e5

“Tejaswini, treated with 100-120 kg K₂O/ha and two kinetin sprays, achieved the highest yield gains (110-113%)”

✓ located verbatim in the source · abstract, characters 1105–1214 · show in text ↑
t0

“in lowland rice”

✓ located verbatim in the source · title, characters 101–116 · show in text ↑