Paper · 2024 · Journal of Plantation Crops

Field evaluation of fungicides for management of Lasiodiplodia leaf blight of coconut

P. Latha; C. Sudhalakshmi; J. Suresh; et al.

5
claims
14
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

Various fungal and phytoplasma diseases are adversely impacting coconut yield. Among them, leaf blight, primarily attributed to Lasiodiplodia theobromae, has emerged as a significant contributor to yield losses ranging between 10 to 25 percent. This study aimed to assess the efficacy of novel fungicide formulations in mitigating leaf blight in coconut palms. An experimental plot, organized using a Randomized Block Design, was established, consisting of five distinct treatments, each replicated four times. The findings reveal that systemic fungicides, specifically propiconazole and tebuconazole, exhibited notable efficacy in curtailing leaf blight when applied at concentrations of 250 ppm and 1000 ppm, respectively. The effective fungicide concentrations are considerably lower than other fungicides tested in the field trials. The results revealed that sequential root feeding of propiconazole 25.9% EC @ 5% (100ml/palm) and tebuconazole 25.9% EC @ 5% (100ml/palm) at three months interval reduced the leaf blight incidence (5.66 % reduction) over control compared to root feeding of same fungicides continuously at quartely interval (3.02 %) with in six months on currently it boosted the nut yield to 135 nuts per palm per annum, compared to the 99 nuts per palm per annum recorded in the control palms.

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Propiconazole at 250 ppm curtailed coconut leaf blight.

Taxon
coconutt0
Treatment
propiconazolee0
Interactor
Lasiodiplodia theobromaeLasiodiplodia theobromaee1pathogen
Outcome
leaf blighte0
Direction
curtailinge0
Value
250 ppme0

Not reportedComparator

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

Lasiodiplodia theobromae
Lasiodiplodia theobromae · InteractorScot Nelson · CC0 · Wikimedia Commons ↗

Verbatim

e0

“systemic fungicides, specifically propiconazole and tebuconazole, exhibited notable efficacy in curtailing leaf blight when applied at concentrations of 250 ppm and 1000 ppm, respectively.”

✓ located verbatim in the source · abstract, characters 536–724 · show in text ↑
t0

“Field evaluation of fungicides for management of Lasiodiplodia leaf blight of coconut”

✓ located verbatim in the source · title, characters 0–85 · show in text ↑
e1

“leaf blight, primarily attributed to Lasiodiplodia theobromae”

✓ located verbatim in the source · abstract, characters 91–152 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tebuconazole at 1000 ppm curtailed coconut leaf blight.

Taxon
coconutt0
Treatment
tebuconazolee0
Interactor
Lasiodiplodia theobromaeLasiodiplodia theobromaee1pathogen
Outcome
leaf blighte0
Direction
curtailinge0
Value
1000 ppme0

Not reportedComparator

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

Lasiodiplodia theobromae
Lasiodiplodia theobromae · InteractorScot Nelson · CC0 · Wikimedia Commons ↗

Verbatim

e0

“systemic fungicides, specifically propiconazole and tebuconazole, exhibited notable efficacy in curtailing leaf blight when applied at concentrations of 250 ppm and 1000 ppm, respectively.”

✓ located verbatim in the source · abstract, characters 536–724 · show in text ↑
t0

“Field evaluation of fungicides for management of Lasiodiplodia leaf blight of coconut”

✓ located verbatim in the source · title, characters 0–85 · show in text ↑
e1

“leaf blight, primarily attributed to Lasiodiplodia theobromae”

✓ located verbatim in the source · abstract, characters 91–152 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Effective concentrations of these systemic fungicides were lower than those of other field-tested fungicides.

Taxon
coconutt0
Outcome
effective fungicide concentrationse0
Direction
lowere0
Comparator
other fungicidese0

Verbatim

e0

“The effective fungicide concentrations are considerably lower than other fungicides tested in the field trials.”

✓ located verbatim in the source · abstract, characters 725–836 · show in text ↑
t0

“Field evaluation of fungicides for management of Lasiodiplodia leaf blight of coconut”

✓ located verbatim in the source · title, characters 0–85 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sequential root feeding reduced leaf blight incidence by 5.66% over control, versus 3.02% for continuous feeding.

Taxon
coconutt0
Treatment
sequential root feeding of propiconazole 25.9% EC @ 5% (100ml/palm) and tebuconazole 25.9% EC @ 5% (100ml/palm) at three months intervale0
Interactor
Lasiodiplodia theobromaeLasiodiplodia theobromaee1pathogen
Outcome
leaf blight incidencee0
Direction
reducede0
Value
5.66 %e0
Qualifier
3.02 %e0
Comparator
controle0

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

Lasiodiplodia theobromae
Lasiodiplodia theobromae · InteractorScot Nelson · CC0 · Wikimedia Commons ↗

Verbatim

e0

“sequential root feeding of propiconazole 25.9% EC @ 5% (100ml/palm) and tebuconazole 25.9% EC @ 5% (100ml/palm) at three months interval reduced the leaf blight incidence (5.66 % reduction) over control compared to root feeding of same fungicides continuously at quartely interval (3.02 %)”

✓ located verbatim in the source · abstract, characters 863–1152 · show in text ↑
t0

“Field evaluation of fungicides for management of Lasiodiplodia leaf blight of coconut”

✓ located verbatim in the source · title, characters 0–85 · show in text ↑
e1

“leaf blight, primarily attributed to Lasiodiplodia theobromae”

✓ located verbatim in the source · abstract, characters 91–152 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sequential feeding increased annual nut yield to 135 nuts per palm, versus 99 in controls.

Taxon
coconutt0
Treatment
sequential root feedinge1
Outcome
nut yielde0
Direction
boostede0
Value
135 nuts per palm per annume0
Qualifier
99 nuts per palm per annume0
Comparator
control palmse0

Verbatim

e0

“it boosted the nut yield to 135 nuts per palm per annum, compared to the 99 nuts per palm per annum recorded in the control palms.”

✓ located verbatim in the source · abstract, characters 1185–1315 · show in text ↑
t0

“Field evaluation of fungicides for management of Lasiodiplodia leaf blight of coconut”

✓ located verbatim in the source · title, characters 0–85 · show in text ↑
e1

“sequential root feeding of propiconazole 25.9% EC @ 5% (100ml/palm) and tebuconazole 25.9% EC @ 5% (100ml/palm)”

✓ located verbatim in the source · abstract, characters 863–974 · show in text ↑

infection · yield · Cocos nucifera (coconut palm)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
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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.