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Asian Journal of Plant Pathology

Year: 2017 | Volume: 11 | Issue: 1 | Page No.: 48-52

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Authors


Abiodun Joseph

Country: Nigeria

Efe-Imafidon Akere Ese

Country: Nigeria

Benson Oluwafemi Ademiluyi

Country: Nigeria

Patrick Ajibola Aluko

Country: Nigeria

Keywords


  • Tomato
  • early blight
  • leaf extracts
  • disease severity
  • number of fruits
  • fruit yield
Research Article

Efficacy of Selected Plant Extracts in the Management of Tomato Early Blight Disease Caused by Alternaria solani

Abiodun Joseph, Efe-Imafidon Akere Ese, Benson Oluwafemi Ademiluyi and Patrick Ajibola Aluko
Background and Objective: Control of tomato early blight has relied almost exclusively on the application of synthetic fungicides. The use of plant extracts is a safe and eco-friendly alternative of managing many plant pathogens. The present study examined the severity of early blight on tomato and evaluated the efficacy of some leaf extracts in the management of the disease. Materials and Methods: The experiment was laid in a randomized complete block design with three replicates. The treatments consisted of plots sprayed with dried extracts of Chromolaena odorata , Euphorbia heterophylla , Tithonia diversifolia , Azadiractha indica , Carica papaya and the control. Data were collected on disease severity, number of fruits, fruit length and fruit weight (yield). Results: Significantly early blight severities were observed in the control plots at 4, 5, 6 and 7 week after transplanting. Carica papaya proved most effective in reducing the severity of early blight on tomato. Plot treated with C. papaya produced a significantly (p≤0.05) higher number of fruits (104.0) and higher fruit length (66.0 mm). The least fruit length was recorded in the control plot (46.2 mm). Significantly (p≤0.05) higher fruit weight (328 g) was recorded in plot treated with C. papaya while the lowest fruit yield (106.7 g) was observed in the control plot. There was no significant difference in fruit weight of tomato in plots treated with C. odorata , A. indica and E. heterophylla . Plots treated with T. diversifolia and the control gave statistically similar fruit weights (126 and 106 g, respectively). Conclusion: The use of plant extracts minimizes the risks and hazards associated with toxic fungicides, especially, on crop plants produced for fresh consumption. Further studies are, however, suggested to unfold the potential of other botanicals in the management of A. solani on tomato.
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How to cite this article

Abiodun Joseph, Efe-Imafidon Akere Ese, Benson Oluwafemi Ademiluyi and Patrick Ajibola Aluko, 2017. Efficacy of Selected Plant Extracts in the Management of Tomato Early Blight Disease Caused by Alternaria solani. Asian Journal of Plant Pathology, 11: 48-52.

URL: https://scialert.net/abstract/?doi=ajppaj.2017.48.52

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Comments


syed ghayas ali Reply
05 January, 2019

good work

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