Paper · 2022 · Sinai Journal of Applied Sciences/Sinai Journal of Applied Sciences

IMPROVING GRAIN YIELD AND NITROGEN USE EFFICIENCIES IN TWO WHEAT CULTIVARS BY BIOCHAR AND NITROGEN APPLICATION TIMING

Asmaa Abdelsalam; ElSayed El-Sobky

12
claims
20
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

Use of biochar and nitrogen application timing might be an effective strategy to ‎improve soil properties and increase wheat yield, especially in sandy soils. Giza 171 cultivar exhibited uppermost grain yield, almost yield attributes, nitrogen uptake efficiency (total-NUpE) and NUE followed by Shandwel 1. Biochar application at 6 Mg ha-1 significantly increased grain yield and almost yield attributes, total-NUpE and NUE compared with the control treatment. Adding N fertilizer at T2 or T3 had greatly improved grain yield and yield attributes and nitrogen use efficiencies comparing with T1 treatment. The interaction between N application timing at T2 and application of 6 Mg biochar ha-1 produced the maximum grain yield (7.23 Mg ha-1) and NUE (55.37 kg kg-1) when Giza 171 was used. Path coefficient analysis showed that spike length and number of spikes m-2 had exerted positive and high direct effect on grain yield of wheat (0.343 and 0.436), while flag leaf area and number of fertile spikeletes spike-1 had positive but moderate direct effect on wheat grain yield (0.280 and 0.201).

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Claims 12

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Giza 171 had the uppermost grain yield and yield attributes relative to Shandwel 1.

Material
Giza 171e0
Outcome
grain yield, almost yield attributese0
Direction
uppermoste0
Comparator
Shandwel 1e0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“Giza 171 cultivar exhibited uppermost grain yield, almost yield attributes, nitrogen uptake efficiency (total-NUpE) and NUE followed by Shandwel 1”

✓ located verbatim in the source · abstract, characters 159–305 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Giza 171 had the uppermost nitrogen uptake and use efficiencies relative to Shandwel 1.

Material
Giza 171e0
Outcome
nitrogen uptake efficiency (total-NUpE) and NUEe0
Direction
uppermoste0
Comparator
Shandwel 1e0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“Giza 171 cultivar exhibited uppermost grain yield, almost yield attributes, nitrogen uptake efficiency (total-NUpE) and NUE followed by Shandwel 1”

✓ located verbatim in the source · abstract, characters 159–305 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Biochar at 6 Mg ha-1 significantly increased grain yield and yield attributes over control.

Treatment
Biochar application at 6 Mg ha-1e0
Outcome
grain yield and almost yield attributese0
Direction
increasede0
Comparator
control treatmente0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“Biochar application at 6 Mg ha-1 significantly increased grain yield and almost yield attributes, total-NUpE and NUE compared with the control treatment”

✓ located verbatim in the source · abstract, characters 307–459 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Biochar at 6 Mg ha-1 significantly increased total-NUpE and NUE over control.

Treatment
Biochar application at 6 Mg ha-1e0
Outcome
total-NUpE and NUEe0
Direction
increasede0
Comparator
control treatmente0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“Biochar application at 6 Mg ha-1 significantly increased grain yield and almost yield attributes, total-NUpE and NUE compared with the control treatment”

✓ located verbatim in the source · abstract, characters 307–459 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen timing T2 or T3 improved yield and yield attributes versus T1.

Treatment
T2 or T3e0
Outcome
grain yield and yield attributese0
Direction
improvede0
Comparator
T1 treatmente0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“Adding N fertilizer at T2 or T3 had greatly improved grain yield and yield attributes and nitrogen use efficiencies comparing with T1 treatment”

✓ located verbatim in the source · abstract, characters 461–604 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen timing T2 or T3 improved nitrogen use efficiencies versus T1.

Treatment
T2 or T3e0
Outcome
nitrogen use efficienciese0
Direction
improvede0
Comparator
T1 treatmente0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“Adding N fertilizer at T2 or T3 had greatly improved grain yield and yield attributes and nitrogen use efficiencies comparing with T1 treatment”

✓ located verbatim in the source · abstract, characters 461–604 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Giza 171 with T2 nitrogen timing and 6 Mg biochar ha-1 gave maximum grain yield of 7.23 Mg ha-1.

Material
Giza 171e0
Treatment
N application timing at T2 and application of 6 Mg biochar ha-1e0
Outcome
grain yielde0
Direction
maximume0
Value
7.23 Mg ha-1e0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“The interaction between N application timing at T2 and application of 6 Mg biochar ha-1 produced the maximum grain yield (7.23 Mg ha-1) and NUE (55.37 kg kg-1) when Giza 171 was used”

✓ located verbatim in the source · abstract, characters 606–788 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Giza 171 with T2 nitrogen timing and 6 Mg biochar ha-1 gave maximum NUE of 55.37 kg kg-1.

Material
Giza 171e0
Treatment
N application timing at T2 and application of 6 Mg biochar ha-1e0
Outcome
NUEe0
Direction
maximume0
Value
55.37 kg kg-1e0

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

t0

“WHEAT CULTIVARS”

✓ located verbatim in the source · title, characters 59–74 · show in text ↑
e0

“The interaction between N application timing at T2 and application of 6 Mg biochar ha-1 produced the maximum grain yield (7.23 Mg ha-1) and NUE (55.37 kg kg-1) when Giza 171 was used”

✓ located verbatim in the source · abstract, characters 606–788 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Spike length had a positive high direct effect on wheat grain yield, coefficient 0.343.

Organ / stage
spikee0
Outcome
grain yielde0
Direction
positivee0
Value
0.343e0

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

“spike length and number of spikes m-2 had exerted positive and high direct effect on grain yield of wheat (0.343 and 0.436)”

✓ located verbatim in the source · abstract, characters 828–951 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Number of spikes m-2 had a positive high direct effect on wheat grain yield, coefficient 0.436.

Organ / stage
spikese0
Outcome
grain yielde0
Direction
positivee0
Value
0.436e0

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

“spike length and number of spikes m-2 had exerted positive and high direct effect on grain yield of wheat (0.343 and 0.436)”

✓ located verbatim in the source · abstract, characters 828–951 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Flag leaf area had a positive moderate direct effect on wheat grain yield, coefficient 0.280.

Organ / stage
flag leafe0
Outcome
grain yielde0
Direction
positivee0
Value
0.280e0

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

“flag leaf area and number of fertile spikeletes spike-1 had positive but moderate direct effect on wheat grain yield (0.280 and 0.201)”

✓ located verbatim in the source · abstract, characters 959–1093 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Fertile spikelets per spike had a positive moderate direct effect on wheat grain yield, coefficient 0.201.

Organ / stage
spikeletese0
Outcome
grain yielde0
Direction
positivee0
Value
0.201e0

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

“number of fertile spikeletes spike-1 had positive but moderate direct effect on wheat grain yield (0.280 and 0.201)”

✓ located verbatim in the source · abstract, characters 978–1093 · show in text ↑

nitrogen · nutrient: efficiency · Triticum aestivum (wheat)Results differ

174 papers: 127 positive, 47 negative or no effect

126 papers in the same direction as this paper · 45 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

170 papers more in this group

See all 174 papers →

biochar · yield · Triticum aestivum (wheat)Positive and negative results

121 papers: 111 positive, 10 negative or no effect

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

  1. negative
  2. negative
  3. negative

117 papers more in this group

See all 121 papers →

nitrogen · yield · Triticum aestivum (wheat)Positive and negative results

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

2,057 papers more in this group

See all 2,061 papers →

biochar · nutrient: efficiency · Triticum aestivum (wheat)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 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.