Paper · 2016 · Journal of Applied and Natural Science

Management of purple blotch and Stemphylium blight of onion in Tarai and Bhabar regions of Uttarakhand, India

Deepa Nainwal; Karuna Vishunavat

11
claims
20
verbatim quotes
9
citations
2
research areas
✓
Open access · cc-by-nc

Abstract

Purple blotch [Alternaria porri] (Ellis) Cif.) and Stemphylium blight [Stemphylium vesicarium] (Wallr.) E. Simmons) of onion cause serious problems in onion seed crop in Tarai and Bhabar region of Uttarakhand. In present study different bio agents and fungicides have been evaluated in vivo against both the diseases. The severity of both purple blotch and Stemphylium blight varied in both Tarai and Bhabar region and even more pronounced in Tarai region than in Bhabar region. A correlation was observed in between the severity of both the diseases with the yield in seed crop. The minimum disease severity of purple blotch and stemphylium blight with the foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%) were observed 2.67% and 2.57% respectively with the total yield of seed was1844.44 kg/ha over check 893.33 kg/ha in 2011. While with the foliar spray of neembicidine (@ 0.3%) disease severity of both the diseases were 5.57% and 4.78% respectively providing a yield of 1827.78kg/ha in seed crop of onion in 2011. Amongst the applied bio-agents, the foliar spray of Trichoderma harzianum (@ 1%) the disease severity of purple blotch and stemphylium blight were recorded 15.44% and 13.11% respectively which was found to be most effective in delaying the disease appearance and providing a yield of 1134.44kg/ha in 2011. However, all the treatments helped to reduce both the diseases in comparison with check.

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Claims 11

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Purple blotch and Stemphylium blight severity was more pronounced in Tarai than Bhabar.

Taxon
onionAllium cepat0
Outcome
severity of both purple blotch and Stemphylium blighte0
Direction
more pronouncede0
Comparator
Bhabar regione0
Setting
Tarai regione0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The severity of both purple blotch and Stemphylium blight varied in both Tarai and Bhabar region and even more pronounced in Tarai region than in Bhabar region.”

✓ located verbatim in the source · abstract, characters 318–478 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Disease severity was correlated with onion seed yield.

Taxon
onionAllium cepat0
Outcome
yield in seed crope0
Comparator
severity of both the diseasese0

Not reportedDirection

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“A correlation was observed in between the severity of both the diseases with the yield in seed crop.”

✓ located verbatim in the source · abstract, characters 479–579 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus monochrotophos spray gave 2.67% purple blotch severity.

Taxon
onionAllium cepat0
Treatment
foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%)e0
Interactor
purple blotche0pathogen
Outcome
disease severity of purple blotche0
Direction
minimume0
Value
2.67%e0
Comparator
checke0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The minimum disease severity of purple blotch and stemphylium blight with the foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%) were observed 2.67% and 2.57% respectively with the total yield of seed was1844.44 kg/ha over check 893.33 kg/ha in 2011.”

✓ located verbatim in the source · abstract, characters 580–840 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus monochrotophos spray gave 2.57% Stemphylium blight severity.

Taxon
onionAllium cepat0
Treatment
foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%)e0
Interactor
stemphylium blighte0pathogen
Outcome
stemphylium blighte0
Direction
minimume0
Value
2.57%e0
Comparator
checke0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The minimum disease severity of purple blotch and stemphylium blight with the foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%) were observed 2.67% and 2.57% respectively with the total yield of seed was1844.44 kg/ha over check 893.33 kg/ha in 2011.”

✓ located verbatim in the source · abstract, characters 580–840 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus monochrotophos yielded 1844.44 kg/ha of onion seed versus 893.33 kg/ha for the check.

Taxon
onionAllium cepat0
Treatment
foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%)e0
Outcome
total yield of seede0
Direction
overe0
Value
1844.44 kg/hae0
Qualifier
893.33 kg/hae0
Comparator
checke0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The minimum disease severity of purple blotch and stemphylium blight with the foliar spray of mancozeb (@ 0.3%) + monochrotophos (@ 0.05%) were observed 2.67% and 2.57% respectively with the total yield of seed was1844.44 kg/ha over check 893.33 kg/ha in 2011.”

✓ located verbatim in the source · abstract, characters 580–840 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Neembicidine spray gave 5.57% purple blotch severity and 4.78% Stemphylium blight severity.

Taxon
onionAllium cepae0
Treatment
foliar spray of neembicidine (@ 0.3%)e0
Outcome
disease severity of both the diseasese0
Value
5.57% and 4.78%e0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“While with the foliar spray of neembicidine (@ 0.3%) disease severity of both the diseases were 5.57% and 4.78% respectively providing a yield of 1827.78kg/ha in seed crop of onion in 2011.”

✓ located verbatim in the source · abstract, characters 841–1030 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Neembicidine spray yielded 1827.78kg/ha of onion seed in 2011.

Taxon
onionAllium cepae0
Treatment
foliar spray of neembicidine (@ 0.3%)e0
Outcome
yielde0
Value
1827.78kg/hae0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“While with the foliar spray of neembicidine (@ 0.3%) disease severity of both the diseases were 5.57% and 4.78% respectively providing a yield of 1827.78kg/ha in seed crop of onion in 2011.”

✓ located verbatim in the source · abstract, characters 841–1030 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma harzianum spray gave 15.44% purple blotch and 13.11% Stemphylium blight severity.

Taxon
onionAllium cepat0
Treatment
foliar spray of Trichoderma harzianum (@ 1%)e0
Interactor
Trichoderma harzianumTrichoderma harzianume0biocontrol_agent
Outcome
disease severity of purple blotch and stemphylium blighte0
Value
15.44% and 13.11%e0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · InteractorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Amongst the applied bio-agents, the foliar spray of Trichoderma harzianum (@ 1%) the disease severity of purple blotch and stemphylium blight were recorded 15.44% and 13.11% respectively which was found to be most effective in delaying the disease appearance and providing a yield of 1134.44kg/ha in 2011.”

✓ located verbatim in the source · abstract, characters 1031–1336 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma harzianum spray most effectively delayed disease appearance among bio agents.

Taxon
onionAllium cepat0
Treatment
foliar spray of Trichoderma harzianum (@ 1%)e0
Interactor
Trichoderma harzianumTrichoderma harzianume0biocontrol_agent
Outcome
delaying the disease appearancee0
Direction
most effectivee0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · InteractorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Amongst the applied bio-agents, the foliar spray of Trichoderma harzianum (@ 1%) the disease severity of purple blotch and stemphylium blight were recorded 15.44% and 13.11% respectively which was found to be most effective in delaying the disease appearance and providing a yield of 1134.44kg/ha in 2011.”

✓ located verbatim in the source · abstract, characters 1031–1336 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma harzianum spray yielded 1134.44kg/ha of onion seed in 2011.

Taxon
onionAllium cepat0
Treatment
foliar spray of Trichoderma harzianum (@ 1%)e0
Interactor
Trichoderma harzianumTrichoderma harzianume0biocontrol_agent
Outcome
yielde0
Value
1134.44kg/hae0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · InteractorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Amongst the applied bio-agents, the foliar spray of Trichoderma harzianum (@ 1%) the disease severity of purple blotch and stemphylium blight were recorded 15.44% and 13.11% respectively which was found to be most effective in delaying the disease appearance and providing a yield of 1134.44kg/ha in 2011.”

✓ located verbatim in the source · abstract, characters 1031–1336 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All treatments reduced both onion diseases relative to the check.

Taxon
onionAllium cepat0
Treatment
all the treatmentse0
Outcome
both the diseasese0
Direction
reducee0
Comparator
checke0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“However, all the treatments helped to reduce both the diseases in comparison with check.”

✓ located verbatim in the source · abstract, characters 1337–1425 · show in text ↑
t0

“onion”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑

mancozeb · yield · Allium cepa (onion)Results differ

10 papers: 9 positive, 1 negative or no effect

8 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

mancozeb · disease · Allium cepa (onion)Results agree

12 papers: 12 positive, 0 negative or no effect

11 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

application · disease · Allium cepa (onion)Positive and negative results

40 papers: 35 positive, 5 negative or no effect

34 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. negative
    Foliar boron increased visible toxicity symptoms in onions.

    The Contribution of Foliar Exposure to Boron Toxicity · 2007 · compared with without a component of foliar contact

    Opposite direction

  3. negative

36 papers more in this group

See all 40 papers →

application · yield · Allium cepa (onion)Positive and negative results

131 papers: 121 positive, 10 negative or no effect

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

  1. no effect
  2. negative
    Foliar boron decreased yields in onions.

    The Contribution of Foliar Exposure to Boron Toxicity · 2007 · compared with without a component of foliar contact

    Opposite direction

  3. no effect

127 papers more in this group

See all 131 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.