Paper · 2017 · 2017 Spokane, Washington July 16 - July 19, 2017

Effects of topdressing depth and row spacing on the SPAD and plant height of winter wheat

Huimin Feng; Nana Gao; You Li; et al.

7
claims
13
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Abstract. The objective of this study is to evaluate the effect of depth of topdressing fertilization on the SPAD value and plant height during whole growth stage of winter wheat. Experiments were conducted for one growing season under field conditions with three different kinds of row spacing (10+20) cm, (12+18) cm and (15+15) cm were chosen based on wheat agronomy in north China. The topdressing depth of (3-4, 5-6, 7-8 and 9-10 cm) was applied in (10+20) cm and (12+18) cm row spacing block, fertilizer was scatered on the surface in block (15+15) cm as control group. The results showed that row spacing did not significantly affect the SPAD but significantly affect plant height of winter wheat, depth of fertilization had a significant effect on SPAD and plant height. Plant height measured in block of (10+20) cm row spacing was higher than block (12+18) cm. The SPAD and plant height had a higher value at deth 7-8 cm than other depth treats in block (10+20) cm and (12+18) cm, which also higher than block (15+15) cm. Thus, row spacing set as (10+20) cm, depth of topdressing fertilization at 7-8 cm was the best treats in this study.

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Claims 7

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Row spacing did not significantly affect wheat SPAD.

Taxon
winter wheatTriticum aestivumt0
Treatment
row spacinge0
Outcome
SPADe0
Direction
did not significantly affecte0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“row spacing did not significantly affect the SPAD”

✓ located verbatim in the source · abstract, characters 599–648 · show in text ↑
t0

“winter wheat”

✓ located verbatim in the source · title, characters 80–92 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Row spacing significantly affected wheat plant height.

Taxon
winter wheatTriticum aestivume0
Treatment
row spacinge0
Outcome
plant heighte0

Not reportedComparatorDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“row spacing did not significantly affect the SPAD but significantly affect plant height of winter wheat”

✓ located verbatim in the source · abstract, characters 599–702 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Fertilization depth significantly affected wheat SPAD and height.

Taxon
winter wheatTriticum aestivumt0
Treatment
depth of fertilizatione0
Outcome
SPAD and plant heighte0

Not reportedComparatorDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“depth of fertilization had a significant effect on SPAD and plant height”

✓ located verbatim in the source · abstract, characters 704–776 · show in text ↑
t0

“winter wheat”

✓ located verbatim in the source · title, characters 80–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat height was higher at (10+20) cm spacing than (12+18) cm.

Taxon
winter wheatTriticum aestivumt0
Treatment
(10+20) cm row spacinge0
Outcome
Plant heighte0
Direction
highere0
Comparator
(12+18) cme0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plant height measured in block of (10+20) cm row spacing was higher than block (12+18) cm.”

✓ located verbatim in the source · abstract, characters 778–868 · show in text ↑
t0

“winter wheat”

✓ located verbatim in the source · title, characters 80–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SPAD was higher at 7-8 cm depth than other depths and the control block.

Taxon
winter wheatTriticum aestivumt0
Treatment
7-8 cme0
Outcome
SPADe0
Direction
highere0
Qualifier
block (10+20) cm and (12+18) cme0
Comparator
other depth treatse0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The SPAD and plant height had a higher value at deth 7-8 cm than other depth treats in block (10+20) cm and (12+18) cm, which also higher than block (15+15) cm.”

✓ located verbatim in the source · abstract, characters 869–1029 · show in text ↑
t0

“winter wheat”

✓ located verbatim in the source · title, characters 80–92 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Plant height was higher at 7-8 cm depth than other depths and the control block.

Taxon
winter wheatTriticum aestivumt0
Treatment
7-8 cme0
Outcome
plant heighte0
Direction
highere0
Qualifier
block (10+20) cm and (12+18) cme0
Comparator
other depth treatse0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The SPAD and plant height had a higher value at deth 7-8 cm than other depth treats in block (10+20) cm and (12+18) cm, which also higher than block (15+15) cm.”

✓ located verbatim in the source · abstract, characters 869–1029 · show in text ↑
t0

“winter wheat”

✓ located verbatim in the source · title, characters 80–92 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors favored (10+20) cm spacing and 7-8 cm topdressing depth.

Taxon
winter wheatTriticum aestivumt0
Outcome
row spacing set as (10+20) cm, depth of topdressing fertilization at 7-8 cme0
Direction
beste0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“row spacing set as (10+20) cm, depth of topdressing fertilization at 7-8 cm was the best treats in this study”

✓ located verbatim in the source · abstract, characters 1036–1145 · show in text ↑
t0

“winter wheat”

✓ located verbatim in the source · title, characters 80–92 · show in text ↑

density · physiology: pigments · Triticum aestivum (wheat)Positive and negative results

7 papers: 6 positive, 1 negative or no effect

6 in the opposite direction

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density · growth · Triticum aestivum (wheat)Positive and negative results

110 papers: 81 positive, 29 negative or no effect

80 papers in the same direction as this paper · 29 in the opposite direction

  1. no effect
  2. negative
  3. no effect

106 papers more in this group

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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.