Paper · 2010 · Communications in Soil Science and Plant Analysis

Evaluation of Various Zinc Extractants in Lowland Rice Soil under the Influence of Zinc Sulfate and Chelated Zinc

S. K. Naik; D. K. Das

5
claims
9
verbatim quotes
8
citations
3
research areas
—
Not open access

Abstract

Field experiments were conducted on rice (cv ‘IET 4094’) in an Aeric endoaquept (pH 7.2) to evaluate the various zinc (Zn) extractants in lowland rice soil under the influence of Zn sulfate and chelated Zn. The diethylenetriaminepentaacetic acid (DTPA), 0.1 N hydrochloric acid (HCl), and 0.05 N HCl‐extractable Zn concentrations in soil increased initially up to the Z29 stage of crop growth when Zn was applied as a single basal source, being greater with Zn ethylenediaminetetraacetic acid (Zn‐EDTA) compared to zinc sulfate (ZnSO4) application. Among the various extractants, the performance of 0.1 N HCl in extracting Zn was better than the other two extractants and followed the trend 0.1 N HCl > 0.005 M DTPA > 0.05 N HCl. The greatest increase in grain and straw yield of rice was 37.8 and 20.4%, respectively, over the control in the treatment T7 (1 kg Zn ha−1 as Zn‐EDTA at basal).

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Claims 5

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Soil zinc extracted by three methods increased initially through the Z29 rice growth stage with basal zinc.

Organ / stage
Z29 stagee0
Treatment
Zn was applied as a single basal sourcee0
Outcome
HCl‐extractable Zn concentrations in soile0
Direction
increasede0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The diethylenetriaminepentaacetic acid (DTPA), 0.1 N hydrochloric acid (HCl), and 0.05 N HCl‐extractable Zn concentrations in soil increased initially up to the Z29 stage of crop growth when Zn was applied as a single basal source”

✓ located verbatim in the source · abstract, characters 207–437 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 50–54 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Extractable soil zinc was greater with zinc EDTA than zinc sulfate.

Treatment
Zn ethylenediaminetetraacetic acid (Zn‐EDTA)e0
Outcome
HCl‐extractable Zn concentrations in soile1
Direction
greatere0
Comparator
zinc sulfate (ZnSO4)e0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“being greater with Zn ethylenediaminetetraacetic acid (Zn‐EDTA) compared to zinc sulfate (ZnSO4) application”

✓ located verbatim in the source · abstract, characters 439–547 · show in text ↑
e1

“HCl‐extractable Zn concentrations in soil”

✓ located verbatim in the source · abstract, characters 296–337 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 50–54 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

The soil zinc extraction methods ranked 0.1 N HCl above DTPA above 0.05 N HCl.

Outcome
extracting Zne0
Direction
bettere0
Comparator
0.005 M DTPA > 0.05 N HCle0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“performance of 0.1 N HCl in extracting Zn was better than the other two extractants and followed the trend 0.1 N HCl > 0.005 M DTPA > 0.05 N HCl”

✓ located verbatim in the source · abstract, characters 584–728 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 50–54 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Basal Zn EDTA at 1 kg Zn per hectare increased rice grain yield by 37.8% over control.

Treatment
1 kg Zn ha−1 as Zn‐EDTA at basale0
Outcome
graine0
Direction
increasee0
Value
37.8e0
Comparator
controle0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“greatest increase in grain and straw yield of rice was 37.8 and 20.4%, respectively, over the control in the treatment T7 (1 kg Zn ha−1 as Zn‐EDTA at basal)”

✓ located verbatim in the source · abstract, characters 734–890 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Basal Zn EDTA at 1 kg Zn per hectare increased rice straw yield by 20.4% over control.

Treatment
1 kg Zn ha−1 as Zn‐EDTA at basale0
Outcome
straw yielde0
Direction
increasee0
Value
20.4%e0
Comparator
controle0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“greatest increase in grain and straw yield of rice was 37.8 and 20.4%, respectively, over the control in the treatment T7 (1 kg Zn ha−1 as Zn‐EDTA at basal)”

✓ located verbatim in the source · abstract, characters 734–890 · show in text ↑

zinc atom · yield · Oryza sativa (rice)Results differ

419 papers: 389 positive, 30 negative or no effect

388 papers in the same direction as this paper · 28 in the opposite direction · 2 reporting no difference from an alternative

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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.