Paper · 2020 · Communications in Soil Science and Plant Analysis

Foliar Applied Zinc and Iron Effects on Yield and Yield Components of Soybean: Determination by PCA Analysis

Cenk Burak Şahin; Necmi İşler

5
claims
8
verbatim quotes
17
citations
2
research areas
—
Not open access

Abstract

In this study, the effects of zinc and iron treatments in different growth stages on yield and yield components of soybean (Glycine max L.) plants were evaluated by principal component analysis (PCA). Field experiments were conducted over during the second crop seasons of the years 2018 and 2019. The experiment was designed as a split-split plot design with three replications. Three varieties of Arisoy, Bravo, and Nazlican were placed in main plots, growth stages of the soybean (V3, R1, R3) in subplots and foliar fertilizers (Zn, Fe, Zn+Fe) in sub-sub plots. Variance analysis revealed that all parameters were significant except the first pod length (2019) and 1000-seed weight (2019). PC1, PC2, and PC3 explained 84.50% of the total variation in 2018 and 86.10% in 2019. Zn + Fe mixture treatment could be recommended for foliar spray because the highest seed yields were obtained from Zn + Fe in both years.

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Claims 5

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Most analyzed parameters were significant, except first pod length and 1000-seed weight in 2019.

Taxon
SoybeanGlycine maxt0
Outcome
all parameterse0
Qualifier
except the first pod length (2019) and 1000-seed weight (2019)e0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Variance analysis revealed that all parameters were significant except the first pod length (2019) and 1000-seed weight (2019)”

✓ located verbatim in the source · abstract, characters 565–691 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 70–77 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

The first three principal components explained 84.50% of 2018 variation.

Outcome
total variatione0
Value
84.50%e0

Verbatim

e0

“PC1, PC2, and PC3 explained 84.50% of the total variation in 2018”

✓ located verbatim in the source · abstract, characters 693–758 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

The first three principal components explained 86.10% of 2019 variation.

Outcome
total variatione0
Value
86.10%e0

Verbatim

e0

“PC1, PC2, and PC3 explained 84.50% of the total variation in 2018 and 86.10% in 2019”

✓ located verbatim in the source · abstract, characters 693–777 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The Zn + Fe treatment gave the highest seed yield in both years.

Taxon
SoybeanGlycine maxt0
Treatment
Zn + Fee0
Outcome
seed yieldse0
Direction
higheste0
Qualifier
both yearse0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“the highest seed yields were obtained from Zn + Fe in both years”

✓ located verbatim in the source · abstract, characters 851–915 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 70–77 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend Zn + Fe foliar spray.

Taxon
SoybeanGlycine maxt0
Outcome
Zn + Fe mixture treatment could be recommended for foliar spraye0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Zn + Fe mixture treatment could be recommended for foliar spray”

✓ located verbatim in the source · abstract, characters 779–842 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 70–77 · show in text ↑

iron atom · yield · Glycine max (soybean)Results differ

46 papers: 37 positive, 9 negative or no effect

36 papers in the same direction as this paper · 9 in the opposite direction

  1. no effect
  2. no effect
  3. negative

42 papers more in this group

See all 46 papers →

zinc atom · yield · Glycine max (soybean)Results differ

89 papers: 79 positive, 10 negative or no effect

78 papers in the same direction as this paper · 10 in the opposite direction

  1. negative
  2. no effect
  3. negative

85 papers more in this group

See all 89 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.