Paper · 2024 · Journal of Advances in Biology & Biotechnology

Efficacy of Fungicides, Botanicals and Trichoderma viride against Alternaria Leaf Spot of Okra (Abelmoschus esculentus L.)

Anirban Mahanty; Sunil Zacharia

9
claims
22
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

Alternaria leaf spot, caused by Alternaria alternata, is a significant fungal disease affecting okra (Abelmoschus esculentus L.), leading to considerable yield losses. This study investigates the efficacy of selected fungicides, botanicals, and Trichoderma viride in managing this disease, while assessing their effects on plant growth and the economic viability of the treatments. A field experiment was conducted using a randomized block design with eight treatments, including fungicides like mancozeb and carbendazim, botanicals such as neem oil, garlic, ginger extracts, and the biocontrol agent Trichoderma viride. The results showed that the combination of mancozeb (12%) and carbendazim (63%) was the most effective, resulting in the tallest plant height of 89.32 cm at 90 DAS, the lowest disease intensity of 8.10% at 45 DAS, and the highest yield of 14.81 t/ha. This treatment also resulted in the highest cost-benefit ratio of 1:2.94. Among the botanicals, neem oil and garlic extract showed moderate effectiveness in disease management. Trichoderma viride also contributed to significant disease suppression and plant growth enhancement. The cost-benefit analysis indicated that chemical fungicides provided the highest economic return, although botanicals and biocontrol agents offer sustainable alternatives. This study demonstrates that integrating chemical, biological, and botanical treatments can effectively manage Alternaria leaf spot in okra, with Trichoderma viride offering a promising eco-friendly option.

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Claims 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus carbendazim gave the lowest Alternaria leaf spot disease intensity in okra (8.10% at 45 DAS).

Treatment
mancozeb (12%) and carbendazim (63%)e1
Interactor
Alternaria alternataAlternaria alternatae4pathogen
Outcome
disease intensitye1
Direction
loweste1
Value
8.10%e1
Setting
field experimente2

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗
Alternaria alternata
Alternaria alternata · Interactor · picture from its Wikimedia Commons categoryMarta Hiromi Taniwaki, Secretaria de Agricultura e Abastecimento · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e1

“the combination of mancozeb (12%) and carbendazim (63%) was the most effective, resulting in the tallest plant height of 89.32 cm at 90 DAS, the lowest disease intensity of 8.10% at 45 DAS, and the highest yield of 14.81 t/ha”

✓ located verbatim in the source · abstract, characters 645–870 · show in text ↑
e2

“A field experiment was conducted”

✓ located verbatim in the source · abstract, characters 382–414 · show in text ↑
e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e4

“caused by Alternaria alternata”

✓ located verbatim in the source · abstract, characters 22–52 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus carbendazim gave the tallest okra plants (89.32 cm at 90 DAS).

Treatment
mancozeb (12%) and carbendazim (63%)e1
Outcome
plant heighte1
Direction
talleste1
Value
89.32 cme1
Qualifier
at 90 DASe1

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e1

“the combination of mancozeb (12%) and carbendazim (63%) was the most effective, resulting in the tallest plant height of 89.32 cm at 90 DAS, the lowest disease intensity of 8.10% at 45 DAS, and the highest yield of 14.81 t/ha”

✓ located verbatim in the source · abstract, characters 645–870 · show in text ↑
e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus carbendazim gave the highest okra yield (14.81 t/ha).

Treatment
mancozeb (12%) and carbendazim (63%)e1
Outcome
yielde1
Direction
higheste1
Value
14.81 t/hae1

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e1

“the combination of mancozeb (12%) and carbendazim (63%) was the most effective, resulting in the tallest plant height of 89.32 cm at 90 DAS, the lowest disease intensity of 8.10% at 45 DAS, and the highest yield of 14.81 t/ha”

✓ located verbatim in the source · abstract, characters 645–870 · show in text ↑
e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mancozeb plus carbendazim gave the highest cost-benefit ratio (1:2.94).

Treatment
mancozeb (12%) and carbendazim (63%)e1
Outcome
cost-benefit ratioe0
Direction
higheste0
Value
1:2.94e0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e1

“the combination of mancozeb (12%) and carbendazim (63%) was the most effective”

✓ located verbatim in the source · abstract, characters 645–723 · show in text ↑
e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e0

“the highest cost-benefit ratio of 1:2.94”

✓ located verbatim in the source · abstract, characters 904–944 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Neem oil and garlic extract showed moderate effectiveness in managing okra leaf spot.

Treatment
neem oil and garlic extracte6
Outcome
effectiveness in disease managemente6
Qualifier
moderatee6

Not reportedComparatorDirection

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e6

“Among the botanicals, neem oil and garlic extract showed moderate effectiveness in disease management”

✓ located verbatim in the source · abstract, characters 946–1047 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma viride gave significant suppression of Alternaria leaf spot in okra.

Treatment
Trichoderma viridee5
Interactor
Alternaria alternataAlternaria alternatae4pathogen
Second interactor
Trichoderma virideTrichoderma viridee5biocontrol_agent
Outcome
disease suppressione5
Qualifier
significante5

Not reportedComparatorDirection

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗
Alternaria alternata
Alternaria alternata · Interactor · picture from its Wikimedia Commons categoryMarta Hiromi Taniwaki, Secretaria de Agricultura e Abastecimento · CC BY 2.0 · Wikimedia Commons ↗
Trichoderma viride
Trichoderma viride · Second interactorKatja Schulz · CC BY 4.0 · iNaturalist ↗

Verbatim

e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e4

“caused by Alternaria alternata”

✓ located verbatim in the source · abstract, characters 22–52 · show in text ↑
e5

“Trichoderma viride also contributed to significant disease suppression and plant growth enhancement”

✓ located verbatim in the source · abstract, characters 1049–1148 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma viride enhanced okra plant growth.

Treatment
Trichoderma viridee5
Interactor
Trichoderma virideTrichoderma viridee5biocontrol_agent
Outcome
plant growth enhancemente5
Direction
enhancemente5

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗
Trichoderma viride
Trichoderma viride · InteractorKatja Schulz · CC BY 4.0 · iNaturalist ↗

Verbatim

e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e5

“Trichoderma viride also contributed to significant disease suppression and plant growth enhancement”

✓ located verbatim in the source · abstract, characters 1049–1148 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Integrating chemical, biological and botanical treatments can effectively manage Alternaria leaf spot in okra (authors conclusion).

Treatment
integrating chemical, biological, and botanical treatmentse0
Outcome
manage Alternaria leaf spote0
Qualifier
effectivelye0

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e0

“integrating chemical, biological, and botanical treatments can effectively manage Alternaria leaf spot in okra”

✓ located verbatim in the source · abstract, characters 1352–1462 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Chemical fungicides gave the highest economic return in the okra trial.

Treatment
chemical fungicidese7
Outcome
economic returne7
Direction
higheste7

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e3

“affecting okra (Abelmoschus esculentus L.)”

✓ located verbatim in the source · abstract, characters 86–128 · show in text ↑
e7

“The cost-benefit analysis indicated that chemical fungicides provided the highest economic return”

✓ located verbatim in the source · abstract, characters 1150–1247 · show in text ↑

mancozeb · Alternaria alternata · Abelmoschus esculentus (okra)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 →

carbendazim · Alternaria alternata · Abelmoschus esculentus (okra)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 →

mancozeb · growth · Abelmoschus esculentus (okra)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 →

carbendazim · growth · Abelmoschus esculentus (okra)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 →

Azadirachta indica · control · Abelmoschus esculentus (okra)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 →

Trichoderma viride · growth · Abelmoschus esculentus (okra)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

botanical · control · Abelmoschus esculentus (okra)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

4 papers more in this group

See all 8 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.