Paper · 2013

Zinc fertilizer placement affects zinc content in maize plant

Y-Q. Zhang; L-L. Pang; P. Y. Yen

6
claims
14
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

In experiment-1, Zn placements created a large variation in soil DTPA-Zn concentration (0.3–29.0 mg kg−1), which induced a systemic and positive response of root growth within soil layers of 0–30 cm; and shoot Zn content was increased by 102 %–305 % depending on Zn placements. Supply capacity of Zn in soil, defined as sum of product of soil DTPA-Zn concentration and root surface area at different soil layers, was most related to shoot Zn content (r = 0.82, P < 0.001) via direct and indirect effects according to path analysis. In experiment-2, Zn placements increased grain Zn concentration by up to 51 %, but significantly reduced the grain Zn harvest index from 50 % by control to about 30 % in average.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

Zn placements created a large variation in soil DTPA-Zn concentration (0.3–29.0 mg kg−1).

Taxon
maizeZea mayst0
Treatment
Zn placementse0
Outcome
soil DTPA-Zn concentratione0
Value
0.3–29.0 mg kg−1e0

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 plant”

✓ located verbatim in the source · title, characters 50–61 · show in text ↑
e0

“Zn placements created a large variation in soil DTPA-Zn concentration (0.3–29.0 mg kg−1)”

✓ located verbatim in the source · abstract, characters 17–105 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zn placements induced a systemic and positive response of root growth within soil layers of 0–30 cm in maize.

Taxon
maizeZea mayst0
Treatment
Zn placementse0
Outcome
root growthe1
Direction
positive responsee1

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 plant”

✓ located verbatim in the source · title, characters 50–61 · show in text ↑
e0

“Zn placements created a large variation in soil DTPA-Zn concentration (0.3–29.0 mg kg−1)”

✓ located verbatim in the source · abstract, characters 17–105 · show in text ↑
e1

“which induced a systemic and positive response of root growth within soil layers of 0–30 cm”

✓ located verbatim in the source · abstract, characters 107–198 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zn placements increased shoot Zn content in maize by 102%–305%, depending on the placement.

Taxon
maizeZea mayst0
Treatment
Zn placementse2
Outcome
shoot Zn contente2
Direction
increasede2
Value
102 %–305 %e2

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 plant”

✓ located verbatim in the source · title, characters 50–61 · show in text ↑
e2

“shoot Zn content was increased by 102 %–305 % depending on Zn placements”

✓ located verbatim in the source · abstract, characters 204–276 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil Zn supply capacity, defined from soil DTPA-Zn and root surface area, was most related to shoot Zn content in maize (r = 0.82, P < 0.001).

Taxon
maizeZea mayst0
Treatment
Supply capacity of Zn in soile3
Outcome
shoot Zn contente3
Value
r = 0.82e3

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 plant”

✓ located verbatim in the source · title, characters 50–61 · show in text ↑
e3

“Supply capacity of Zn in soil, defined as sum of product of soil DTPA-Zn concentration and root surface area at different soil layers, was most related to shoot Zn content (r = 0.82, P < 0.001)”

✓ located verbatim in the source · abstract, characters 278–471 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zn placements increased grain Zn concentration in maize by up to 51%.

Taxon
maizeZea mayst0
Treatment
Zn placementse4
Outcome
grain Zn concentratione4
Direction
increasede4
Value
up to 51 %e4

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 plant”

✓ located verbatim in the source · title, characters 50–61 · show in text ↑
e4

“Zn placements increased grain Zn concentration by up to 51 %”

✓ located verbatim in the source · abstract, characters 549–609 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Zn placements significantly reduced the grain Zn harvest index in maize, to about 30% on average from 50% in the control.

Taxon
maizeZea mayst0
Treatment
Zn placementse4
Outcome
grain Zn harvest indexe5
Direction
reducede5
Value
about 30 %e5
Qualifier
from 50 %e5
Comparator
controle5

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 plant”

✓ located verbatim in the source · title, characters 50–61 · show in text ↑
e4

“Zn placements increased grain Zn concentration by up to 51 %”

✓ located verbatim in the source · abstract, characters 549–609 · show in text ↑
e5

“significantly reduced the grain Zn harvest index from 50 % by control to about 30 % in average”

✓ located verbatim in the source · abstract, characters 615–709 · show in text ↑

zinc atom · growth · Zea mays (maize)Results differ

224 papers: 183 positive, 41 negative or no effect

182 papers in the same direction as this paper · 41 in the opposite direction

  1. no effect
  2. no effect
  3. negative

220 papers more in this group

See all 224 papers →

zinc atom · nutrient: content · Zea mays (maize)Results differ

235 papers: 199 positive, 36 negative or no effect

198 papers in the same direction as this paper · 33 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

231 papers more in this group

See all 235 papers →

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

441 papers: 391 positive, 50 negative or no effect

49 papers in the same direction as this paper · 391 in the opposite direction

  1. positive
  2. positive
  3. positive

437 papers more in this group

See all 441 papers →

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.