Paper · 1991 · Australian Journal of Experimental Agriculture

Effect of nitrogen and residual copper on the occurrence of Rhizoctonia bare patch in wheat grown near Esperance, Western Australia

RF Brennan

14
claims
24
verbatim quotes
2
citations
3
research areas
—
Not open access

Abstract

The area of rhizoctonia bare patch and the incidence and severity of rhizoctonia root rot (caused by Rhizoctonia solani Khnn) were reduced by the application of ammonium nitrate fertiliser. Residual copper (Cu) from a Cu fertiliser treatment in 1967 had no effect on the area of rhizoctonia bare patch or the incidence and severity of root rot. With no applied nitrogen (N), 17.6% (mean of residual Cu levels) of the plot was affected by patches while the area of plot affected by patches declined to 4.2% where 92 kg N/ha had been applied. The incidence and severity of rhizoctonia root rot declined from 45.9 and 27.0% to 32.7 and 9.1%, respectively, with the application of N fertiliser. The grain yield of wheat supplied with adequate Cu increased although the level of N fertiliser exceeded that considered adequate for plant nutrition. The response is explained by the control of rhizoctonia bare patch. The area of rhizoctonia patches and the incidence and severity of rhizoctonia root rot decreased with the application of N, and with adequate Cu fertiliser (2.2 kg Cu/ha), the grain yields increased. However, with marginal and deficient levels of applied Cu fertiliser, the application of N fertiliser induced Cu deficiency in wheat plants, and the grain yields declined although rhizoctonia patches were reduced.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 14

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate fertiliser reduced area of rhizoctonia bare patch in wheat.

Treatment
application of ammonium nitrate fertilisere0
Interactor
Rhizoctonia solani KhnnRhizoctonia solanie0pathogen
Outcome
area of rhizoctonia bare patche0
Direction
reducede0

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 ↗
Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The area of rhizoctonia bare patch and the incidence and severity of rhizoctonia root rot (caused by Rhizoctonia solani Khnn) were reduced by the application of ammonium nitrate fertiliser.”

✓ located verbatim in the source · abstract, characters 0–189 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate fertiliser reduced incidence in wheat.

Treatment
application of ammonium nitrate fertilisere0
Interactor
Rhizoctonia solani KhnnRhizoctonia solanie0pathogen
Outcome
incidencee0
Direction
reducede0

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 ↗
Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The area of rhizoctonia bare patch and the incidence and severity of rhizoctonia root rot (caused by Rhizoctonia solani Khnn) were reduced by the application of ammonium nitrate fertiliser.”

✓ located verbatim in the source · abstract, characters 0–189 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate fertiliser reduced severity in wheat.

Treatment
application of ammonium nitrate fertilisere0
Interactor
Rhizoctonia solani KhnnRhizoctonia solanie0pathogen
Outcome
severitye0
Direction
reducede0

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 ↗
Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The area of rhizoctonia bare patch and the incidence and severity of rhizoctonia root rot (caused by Rhizoctonia solani Khnn) were reduced by the application of ammonium nitrate fertiliser.”

✓ located verbatim in the source · abstract, characters 0–189 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Residual copper from a 1967 fertilizer treatment had no detected effect on area of rhizoctonia bare patch.

Treatment
Residual copper (Cu) from a Cu fertiliser treatment in 1967e0
Outcome
area of rhizoctonia bare patche0
Direction
no effecte0

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

“Residual copper (Cu) from a Cu fertiliser treatment in 1967 had no effect on the area of rhizoctonia bare patch or the incidence and severity of root rot.”

✓ located verbatim in the source · abstract, characters 190–344 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Residual copper from a 1967 fertilizer treatment had no detected effect on incidence.

Treatment
Residual copper (Cu) from a Cu fertiliser treatment in 1967e0
Outcome
incidencee0
Direction
no effecte0

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

“Residual copper (Cu) from a Cu fertiliser treatment in 1967 had no effect on the area of rhizoctonia bare patch or the incidence and severity of root rot.”

✓ located verbatim in the source · abstract, characters 190–344 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Residual copper from a 1967 fertilizer treatment had no detected effect on severity.

Treatment
Residual copper (Cu) from a Cu fertiliser treatment in 1967e0
Outcome
severitye0
Direction
no effecte0

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

“Residual copper (Cu) from a Cu fertiliser treatment in 1967 had no effect on the area of rhizoctonia bare patch or the incidence and severity of root rot.”

✓ located verbatim in the source · abstract, characters 190–344 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Patch area declined from 17.6% without N to 4.2% with 92 kg N/ha.

Treatment
92 kg N/hae0
Outcome
area of plot affected by patchese0
Direction
declinede0
Value
4.2%e0
Qualifier
17.6%e0
Comparator
no applied nitrogen (N)e0

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

“With no applied nitrogen (N), 17.6% (mean of residual Cu levels) of the plot was affected by patches while the area of plot affected by patches declined to 4.2% where 92 kg N/ha had been applied.”

✓ located verbatim in the source · abstract, characters 345–540 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

incidence declined to 32.7 with N fertiliser.

Treatment
application of N fertilisere0
Outcome
incidencee0
Direction
declinede0
Value
32.7e0

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

“The incidence and severity of rhizoctonia root rot declined from 45.9 and 27.0% to 32.7 and 9.1%, respectively, with the application of N fertiliser.”

✓ located verbatim in the source · abstract, characters 541–690 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

severity of rhizoctonia root rot declined to 9.1% with N fertiliser.

Treatment
application of N fertilisere0
Outcome
severity of rhizoctonia root rote0
Direction
declinede0
Value
9.1%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

“The incidence and severity of rhizoctonia root rot declined from 45.9 and 27.0% to 32.7 and 9.1%, respectively, with the application of N fertiliser.”

✓ located verbatim in the source · abstract, characters 541–690 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat grain yield increased with adequate Cu despite N above the level considered adequate for nutrition.

Treatment
adequate Cue0
Outcome
grain yielde0
Direction
increasede0
Qualifier
level of N fertiliser exceeded that considered adequate for plant nutritione0

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

“The grain yield of wheat supplied with adequate Cu increased although the level of N fertiliser exceeded that considered adequate for plant nutrition.”

✓ located verbatim in the source · abstract, characters 691–841 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The yield response was attributed to control of rhizoctonia bare patch.

Outcome
responsee0
Qualifier
control of rhizoctonia bare patche0

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 response is explained by the control of rhizoctonia bare patch.”

✓ located verbatim in the source · abstract, characters 842–909 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 86–91 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

With marginal or deficient Cu, N fertiliser induced Cu deficiency in wheat.

Treatment
application of N fertilisere0
Outcome
Cu deficiencye0
Direction
inducede0
Qualifier
marginal and deficient levels of applied Cu fertilisere0

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

“However, with marginal and deficient levels of applied Cu fertiliser, the application of N fertiliser induced Cu deficiency in wheat plants, and the grain yields declined although rhizoctonia patches were reduced.”

✓ located verbatim in the source · abstract, characters 1110–1323 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

With marginal or deficient Cu, N fertiliser declined grain yields in wheat.

Treatment
application of N fertilisere0
Outcome
grain yieldse0
Direction
declinede0
Qualifier
marginal and deficient levels of applied Cu fertilisere0

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

“However, with marginal and deficient levels of applied Cu fertiliser, the application of N fertiliser induced Cu deficiency in wheat plants, and the grain yields declined although rhizoctonia patches were reduced.”

✓ located verbatim in the source · abstract, characters 1110–1323 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

With marginal or deficient Cu, N fertiliser reduced rhizoctonia patches in wheat.

Treatment
application of N fertilisere0
Outcome
rhizoctonia patchese0
Direction
reducede0
Qualifier
marginal and deficient levels of applied Cu fertilisere0

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

“However, with marginal and deficient levels of applied Cu fertiliser, the application of N fertiliser induced Cu deficiency in wheat plants, and the grain yields declined although rhizoctonia patches were reduced.”

✓ located verbatim in the source · abstract, characters 1110–1323 · show in text ↑

copper atom · yield · Triticum aestivum (wheat)Results differ

75 papers: 63 positive, 12 negative or no effect

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

  1. negative
  2. no effect
  3. no effect

71 papers more in this group

See all 75 papers →

copper atom · disease · Triticum aestivum (wheat)Positive and negative results

16 papers: 11 positive, 5 negative or no effect

4 papers in the same direction as this paper · 11 in the opposite direction

  1. positive
  2. positive
    Severe copper deficiency caused wilting.

    Anomalous Water Relations in Copper-Deficient Wheat Plants · 1976

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  3. positive

12 papers more in this group

See all 16 papers →

nitrogen · disease · Triticum aestivum (wheat)Results differ

52 papers: 23 positive, 29 negative or no effect

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

  1. no effect
  2. negative
  3. negative

48 papers more in this group

See all 52 papers →

fertilization · disease · Triticum aestivum (wheat)Positive and negative results

107 papers: 72 positive, 35 negative or no effect

71 papers in the same direction as this paper · 35 in the opposite direction

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

103 papers more in this group

See all 107 papers →

nitrogen · nutrient: content · Triticum aestivum (wheat)Positive and negative results

479 papers: 410 positive, 69 negative or no effect

68 papers in the same direction as this paper · 410 in the opposite direction

  1. positive
  2. positive
  3. positive

475 papers more in this group

See all 479 papers →

fertilization · nutrient: content · Triticum aestivum (wheat)Positive and negative results

959 papers: 854 positive, 105 negative or no effect

104 papers in the same direction as this paper · 854 in the opposite direction

  1. positive
  2. positive
  3. positive

955 papers more in this group

See all 959 papers →

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

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

323 papers in the same direction as this paper · 1,737 in the opposite direction

  1. positive
  2. positive
  3. positive

2,057 papers more in this group

See all 2,061 papers →

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

3,438 papers: 3,115 positive, 323 negative or no effect

322 papers in the same direction as this paper · 3,115 in the opposite direction

  1. positive
  2. positive
  3. positive

3,434 papers more in this group

See all 3,438 papers →

8 of 9 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.