Paper · 2021 · Journal of Plant Nutrition

Arbuscular mycorrhizal fungi and proximal sensing for improving nutrient use efficiencies in wheat (Triticum aestivum L.)

Varinderpal-Singh; Kunal; Satwant Kaur Gosal; et al.

8
claims
8
verbatim quotes
1
citations
3
research areas
—
Not open access

Abstract

A 4 years field study was conducted to improve nitrogen (N) and phosphorus (P) use efficiencies in wheat (Triticum aestivum L.) using arbuscular mycorrhizal fungi (AMF) and precision N management. Split plot design was employed to rationalize N and P fertilizer use in two different experiments with AMF in the main plot and fertilizer application practice in the subplots. The AMF seed coating improved mycorrhization, root dry weight and P uptake. AMF coating of wheat seeds improved mean grain yield and agronomic efficiency of applied P fertilizer (AEP) by 11% and 55.4%, respectively. However, AMF seed coating did not improve chlorophyll content, normalized difference vegetative index, grain yield and agronomic efficiency of applied N fertilizer (AEN). Precision N management using leaf color chart (LCC), chlorophyll meter (SPAD), and GreenSeeker optical sensor (GS) sustained wheat grain yield equivalent to the soil-test based N fertilizer recommendation with 20–31 kg ha−1 less fertilizer N. Proximal sensing guided N use improved AEN by 21.9%–39.6% while mitigating global warming potential by 16%–24%. Integrated use of AMF seed coating and precision N management provides a potential solution to improve N and P nutrition and reduce environmental footprints of fertilizer N use in wheat.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF seed coating improved wheat mycorrhization, root dry weight and phosphorus uptake.

Treatment
AMF seed coatinge0
Interactor
AMFe0symbiont
Outcome
mycorrhization, root dry weight and P uptakee0
Direction
improvede0

Not reportedTaxonComparator

Verbatim

e0

“The AMF seed coating improved mycorrhization, root dry weight and P uptake.”

✓ located verbatim in the source · abstract, characters 374–449 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF coating increased mean wheat grain yield by 11%.

Treatment
AMF coatinge0
Interactor
AMFe0symbiont
Outcome
mean grain yielde0
Direction
improvede0
Value
11%e0

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

“AMF coating of wheat seeds improved mean grain yield and agronomic efficiency of applied P fertilizer (AEP) by 11% and 55.4%, respectively.”

✓ located verbatim in the source · abstract, characters 450–589 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF coating increased agronomic efficiency of applied phosphorus fertilizer by 55.4%.

Treatment
AMF coatinge0
Interactor
AMFe0symbiont
Outcome
agronomic efficiency of applied P fertilizer (AEP)e0
Direction
improvede0
Value
55.4%e0

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

“AMF coating of wheat seeds improved mean grain yield and agronomic efficiency of applied P fertilizer (AEP) by 11% and 55.4%, respectively.”

✓ located verbatim in the source · abstract, characters 450–589 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

AMF coating did not improve chlorophyll content or NDVI.

Treatment
AMF seed coatinge0
Interactor
AMFe0symbiont
Outcome
chlorophyll content, normalized difference vegetative indexe0
Direction
did not improvee0

Not reportedTaxonComparator

Verbatim

e0

“AMF seed coating did not improve chlorophyll content, normalized difference vegetative index, grain yield and agronomic efficiency of applied N fertilizer (AEN).”

✓ located verbatim in the source · abstract, characters 599–760 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

AMF coating did not improve grain yield or agronomic nitrogen efficiency in the stated comparison.

Treatment
AMF seed coatinge0
Interactor
AMFe0symbiont
Outcome
grain yield and agronomic efficiency of applied N fertilizer (AEN)e0
Direction
did not improvee0

Not reportedTaxonComparator

Verbatim

e0

“AMF seed coating did not improve chlorophyll content, normalized difference vegetative index, grain yield and agronomic efficiency of applied N fertilizer (AEN).”

✓ located verbatim in the source · abstract, characters 599–760 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sensor-guided precision N management sustained yield with less fertilizer.

Treatment
Precision N management using leaf color chart (LCC), chlorophyll meter (SPAD), and GreenSeeker optical sensor (GS)e0
Outcome
grain yielde0
Direction
equivalente0
Value
20–31 kg ha−1e0
Qualifier
less fertilizer Ne0
Comparator
soil-test based N fertilizer recommendatione0

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

“Precision N management using leaf color chart (LCC), chlorophyll meter (SPAD), and GreenSeeker optical sensor (GS) sustained wheat grain yield equivalent to the soil-test based N fertilizer recommendation with 20–31 kg ha−1 less fertilizer N.”

✓ located verbatim in the source · abstract, characters 761–1003 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Proximal sensing guided nitrogen use improved agronomic nitrogen efficiency by 21.9%–39.6%.

Treatment
Proximal sensing guided N usee0
Outcome
AENe0
Direction
improvede0
Value
21.9%–39.6%e0

Not reportedTaxonComparator

Verbatim

e0

“Proximal sensing guided N use improved AEN by 21.9%–39.6% while mitigating global warming potential by 16%–24%.”

✓ located verbatim in the source · abstract, characters 1004–1115 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Proximal sensing guided nitrogen use mitigated global warming potential by 16%–24%.

Treatment
Proximal sensing guided N usee0
Outcome
global warming potentiale0
Direction
mitigatinge0
Value
16%–24%e0

Not reportedTaxonComparator

Verbatim

e0

“Proximal sensing guided N use improved AEN by 21.9%–39.6% while mitigating global warming potential by 16%–24%.”

✓ located verbatim in the source · abstract, characters 1004–1115 · show in text ↑

chlorophyll · yield · Triticum aestivum (wheat)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

mycorrhiza · physiology: pigments · Triticum aestivum (wheat)Results differ

15 papers: 12 positive, 3 negative or no effect

2 papers in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. positive
  3. positive

11 papers more in this group

See all 15 papers →

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

35 papers: 26 positive, 9 negative or no effect

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

  1. negative
  2. no effect
  3. negative

31 papers more in this group

See all 35 papers →

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

44 papers: 42 positive, 2 negative or no effect

1 paper in the same direction as this paper · 42 in the opposite direction

  1. positive
  2. positive
  3. positive

40 papers more in this group

See all 44 papers →

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

82 papers: 69 positive, 13 negative or no effect

68 papers in the same direction as this paper · 13 in the opposite direction

  1. negative
  2. no effect
  3. no effect

78 papers more in this group

See all 82 papers →

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

103 papers: 95 positive, 8 negative or no effect

94 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

99 papers more in this group

See all 103 papers →

seed treatment · growth · Triticum aestivum (wheat)Positive and negative results

293 papers: 259 positive, 34 negative or no effect

258 papers in the same direction as this paper · 31 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

289 papers more in this group

See all 293 papers →

seed treatment · yield · Triticum aestivum (wheat)Positive and negative results

301 papers: 270 positive, 31 negative or no effect

30 papers in the same direction as this paper · 270 in the opposite direction

  1. positive
  2. positive
  3. positive

297 papers more in this group

See all 301 papers →

8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.