Paper · 2019 · Journal of Pharmacognosy and Phytochemistry

Bio-efficacy of plants extract against Alternaria brassicicola causing Alternaria leaf spot of cabbage

Parikshit Gupta; Ram Chandra; Preeti Dubey

4
claims
11
verbatim quotes
4
citations
1
research areas
✓
Open access

Abstract

Cabbage (Brassica oleracea) is most important vegetable crop and several bacteria, fungi and virus infect it and cause disease. Alternaria leaf spot of cabbage is very worst disease and is distributed worldwide in all cabbage growing countries. The growth inhibition of mycelium of Alternaria brassicicola was tested by treatment of culture by five botanical extracts viz. Azadirachta indica, Capsicum annum, Calotropis giganta, Barbadoes aloe, Aegle marelos and compared with control culture. These botanical extracts were added to the culture media at two concentration viz. 15 % and 25 % and tested by poisoned food technique. Neem and chilli plant extracts were found highly effective against pathogen at both 15 % and 25 % concentration and mycelial inhibition was recorded 68 % at 25 % concentration. Another two plant extracts Aloe vera and madar were also found to be effective against pathogen and both showed 55.33 percent inhibition at 25 % concentration. Minimum mycelia inhibition was recorded from Bel with only 37.77 percent inhibition at 25% concentration. Presently many farmers are using chemicals for control of Alternaria leaf spot of cabbage however, they cause health hazards. Therefore, this investigation will be helpful to the farmers for selection of suitable plant extracts, used as a control of Alternaria leaf spot of cabbage.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Neem and chilli plant extracts were highly effective against Alternaria brassicicola, inhibiting mycelium by 68% at 25% concentration.

Treatment
Neem and chilli plant extractse2
Interactor
Alternaria brassicicolaAlternaria brassicicolae1pathogen
Outcome
mycelial inhibitione2
Direction
highly effectivee2
Value
68 %e2
Comparator
control culturee1

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

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗
Alternaria brassicicola
Alternaria brassicicola · InteractorSeemadua, S. Department of Agriculture, Thailand · CC BY 3.0 au · Wikimedia Commons ↗

Verbatim

e0

“Cabbage (Brassica oleracea) is most important vegetable crop”

✓ located verbatim in the source · abstract, characters 0–60 · show in text ↑
e1

“The growth inhibition of mycelium of Alternaria brassicicola was tested by treatment of culture by five botanical extracts viz. Azadirachta indica, Capsicum annum, Calotropis giganta, Barbadoes aloe, Aegle marelos and compared with control culture”

✓ located verbatim in the source · abstract, characters 245–492 · show in text ↑
e2

“Neem and chilli plant extracts were found highly effective against pathogen at both 15 % and 25 % concentration and mycelial inhibition was recorded 68 % at 25 % concentration”

✓ located verbatim in the source · abstract, characters 630–805 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Aloe vera and madar extracts inhibited Alternaria brassicicola mycelium by 55.33% at 25% concentration.

Treatment
Aloe vera and madare3
Interactor
Alternaria brassicicolaAlternaria brassicicolae1pathogen
Outcome
inhibitione3
Direction
effectivee3
Value
55.33 percente3
Comparator
control culturee1

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

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗
Alternaria brassicicola
Alternaria brassicicola · InteractorSeemadua, S. Department of Agriculture, Thailand · CC BY 3.0 au · Wikimedia Commons ↗

Verbatim

e0

“Cabbage (Brassica oleracea) is most important vegetable crop”

✓ located verbatim in the source · abstract, characters 0–60 · show in text ↑
e1

“The growth inhibition of mycelium of Alternaria brassicicola was tested by treatment of culture by five botanical extracts viz. Azadirachta indica, Capsicum annum, Calotropis giganta, Barbadoes aloe, Aegle marelos and compared with control culture”

✓ located verbatim in the source · abstract, characters 245–492 · show in text ↑
e3

“Another two plant extracts Aloe vera and madar were also found to be effective against pathogen and both showed 55.33 percent inhibition at 25 % concentration”

✓ located verbatim in the source · abstract, characters 807–965 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Bel extract gave the minimum mycelial inhibition of Alternaria brassicicola, 37.77% at 25% concentration.

Treatment
Bele4
Interactor
Alternaria brassicicolaAlternaria brassicicolae1pathogen
Outcome
inhibitione4
Direction
Minimume4
Value
37.77 percente4
Comparator
control culturee1

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

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗
Alternaria brassicicola
Alternaria brassicicola · InteractorSeemadua, S. Department of Agriculture, Thailand · CC BY 3.0 au · Wikimedia Commons ↗

Verbatim

e0

“Cabbage (Brassica oleracea) is most important vegetable crop”

✓ located verbatim in the source · abstract, characters 0–60 · show in text ↑
e1

“The growth inhibition of mycelium of Alternaria brassicicola was tested by treatment of culture by five botanical extracts viz. Azadirachta indica, Capsicum annum, Calotropis giganta, Barbadoes aloe, Aegle marelos and compared with control culture”

✓ located verbatim in the source · abstract, characters 245–492 · show in text ↑
e4

“Minimum mycelia inhibition was recorded from Bel with only 37.77 percent inhibition at 25% concentration”

✓ located verbatim in the source · abstract, characters 967–1071 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Botanical extracts may help farmers select suitable extracts to control Alternaria leaf spot of cabbage.

Outcome
selection of suitable plant extractse5

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

Brassica oleracea var. capitata
Brassica oleracea var. capitata · TaxonThamizhpparithi Maari · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Cabbage (Brassica oleracea) is most important vegetable crop”

✓ located verbatim in the source · abstract, characters 0–60 · show in text ↑
e5

“this investigation will be helpful to the farmers for selection of suitable plant extracts, used as a control of Alternaria leaf spot of cabbage”

✓ located verbatim in the source · abstract, characters 1210–1354 · show in text ↑

botanical · Alternaria brassicicola · Brassica oleracea (wild cabbage)Positive and negative results

7 papers: 6 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

3 papers more in this group

See all 7 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.