Integrated Management of Tomato Late Blight (<i>Phytophtra infestans</i> Mont.) of Tomato (<i>Lycopersicon esculentum</i> MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia

Daniel Keskse; Negash Hailu; Eshetu Belete

doi:doi:10.11648/j.jps.20190703.12

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Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia

Daniel Keskse, Negash Hailu, Eshetu Belete

Published in Journal of Plant Sciences (Volume 7, Issue 3)

Received: 24 January 2019 Accepted: 21 March 2019 Published: 10 July 2019

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Abstract

Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa) against late blight and yield. The experiments were arranged randomized complete block design in factorial with three replications. Fungicides were applied two weeks intervals starting from the onset of the disease. The integration of varieties and fungicides exhibited significant difference at (p<0.05) in disease parameters, and yield. Significantly, the lowest Percentage severity index (PSI) (28%) with AUDPC (592.67%-days) and the highest yield (50.3 t/ha) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Ataye while the lowest PSI (35%) with AUDPC (630%-days) and the highest yield (43 t ha^-1) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Shewarobit. On the contrary the highest PSI (60.7%) with highest AUDPC (1373.17%-days) and the lowest yield (27 t ha^-1) were obtained from untreated Margoble at Ataye, while the highest severity (69.3%) with highest AUDPC (1248.33%-days) and the lowest yield (22 t ha^-1) were obtained from untreated Margoble at Shewarobit. As compared to yield losses from protected plots with Ridomil MZ 68%WP, the highest fruit yield loss of 44.9% at Ataye and 47% at Shewarobit were recorded from unsprayed Margoble variety. The best management of late blight and the higher yield were obtained from integration of two varieties treated with Ridomil MZ 68% WP. Thus, it is recommended to use tomato varieties with sprays Ridomil MZ 68% gave the highest protection against late blight and the highest yield benefit. However, further extensive studies have to be undertaken for late blight management options through integration of varieties and frequency of fungicide applications that may contribute to sustainability of tomato production in the country.

Published in	Journal of Plant Sciences (Volume 7, Issue 3)
DOI	10.11648/j.jps.20190703.12
Page(s)	63-71
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Disease Progressive Rate, Disease Severity Index, Late Blight, Varieties

References

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Daniel Keskse, Negash Hailu, Eshetu Belete. (2019). Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia. Journal of Plant Sciences, 7(3), 63-71. https://doi.org/10.11648/j.jps.20190703.12

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Daniel Keskse; Negash Hailu; Eshetu Belete. Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia. J. Plant Sci. 2019, 7(3), 63-71. doi: 10.11648/j.jps.20190703.12

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AMA Style

Daniel Keskse, Negash Hailu, Eshetu Belete. Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia. J Plant Sci. 2019;7(3):63-71. doi: 10.11648/j.jps.20190703.12

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@article{10.11648/j.jps.20190703.12,
  author = {Daniel Keskse and Negash Hailu and Eshetu Belete},
  title = {Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia},
  journal = {Journal of Plant Sciences},
  volume = {7},
  number = {3},
  pages = {63-71},
  doi = {10.11648/j.jps.20190703.12},
  url = {https://doi.org/10.11648/j.jps.20190703.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20190703.12},
  abstract = {Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa) against late blight and yield. The experiments were arranged randomized complete block design in factorial with three replications. Fungicides were applied two weeks intervals starting from the onset of the disease. The integration of varieties and fungicides exhibited significant difference at (p-1) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Shewarobit. On the contrary the highest PSI (60.7%) with highest AUDPC (1373.17%-days) and the lowest yield (27 t ha-1) were obtained from untreated Margoble at Ataye, while the highest severity (69.3%) with highest AUDPC (1248.33%-days) and the lowest yield (22 t ha-1) were obtained from untreated Margoble at Shewarobit. As compared to yield losses from protected plots with Ridomil MZ 68%WP, the highest fruit yield loss of 44.9% at Ataye and 47% at Shewarobit were recorded from unsprayed Margoble variety. The best management of late blight and the higher yield were obtained from integration of two varieties treated with Ridomil MZ 68% WP. Thus, it is recommended to use tomato varieties with sprays Ridomil MZ 68% gave the highest protection against late blight and the highest yield benefit. However, further extensive studies have to be undertaken for late blight management options through integration of varieties and frequency of fungicide applications that may contribute to sustainability of tomato production in the country.},
 year = {2019}
}

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TY  - JOUR
T1  - Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia
AU  - Daniel Keskse
AU  - Negash Hailu
AU  - Eshetu Belete
Y1  - 2019/07/10
PY  - 2019
N1  - https://doi.org/10.11648/j.jps.20190703.12
DO  - 10.11648/j.jps.20190703.12
T2  - Journal of Plant Sciences
JF  - Journal of Plant Sciences
JO  - Journal of Plant Sciences
SP  - 63
EP  - 71
PB  - Science Publishing Group
SN  - 2331-0731
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AB  - Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa) against late blight and yield. The experiments were arranged randomized complete block design in factorial with three replications. Fungicides were applied two weeks intervals starting from the onset of the disease. The integration of varieties and fungicides exhibited significant difference at (p-1) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Shewarobit. On the contrary the highest PSI (60.7%) with highest AUDPC (1373.17%-days) and the lowest yield (27 t ha-1) were obtained from untreated Margoble at Ataye, while the highest severity (69.3%) with highest AUDPC (1248.33%-days) and the lowest yield (22 t ha-1) were obtained from untreated Margoble at Shewarobit. As compared to yield losses from protected plots with Ridomil MZ 68%WP, the highest fruit yield loss of 44.9% at Ataye and 47% at Shewarobit were recorded from unsprayed Margoble variety. The best management of late blight and the higher yield were obtained from integration of two varieties treated with Ridomil MZ 68% WP. Thus, it is recommended to use tomato varieties with sprays Ridomil MZ 68% gave the highest protection against late blight and the highest yield benefit. However, further extensive studies have to be undertaken for late blight management options through integration of varieties and frequency of fungicide applications that may contribute to sustainability of tomato production in the country.
VL  - 7
IS  - 3
ER  -

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Author Information

Daniel Keskse

Department of Plant Science, Raya University, Maychew, Ethiopia
Negash Hailu

Department of Plant Science, Debre Berhan University, DebreBerhan, Ethiopia
Eshetu Belete

Department of Plant Science, Wollo University, Dessie, Ethiopia

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Daniel Keskse, Negash Hailu, Eshetu Belete. (2019). Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia. Journal of Plant Sciences, 7(3), 63-71. https://doi.org/10.11648/j.jps.20190703.12

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Daniel Keskse; Negash Hailu; Eshetu Belete. Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia. J. Plant Sci. 2019, 7(3), 63-71. doi: 10.11648/j.jps.20190703.12

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AMA Style

Daniel Keskse, Negash Hailu, Eshetu Belete. Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia. J Plant Sci. 2019;7(3):63-71. doi: 10.11648/j.jps.20190703.12

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@article{10.11648/j.jps.20190703.12,
  author = {Daniel Keskse and Negash Hailu and Eshetu Belete},
  title = {Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia},
  journal = {Journal of Plant Sciences},
  volume = {7},
  number = {3},
  pages = {63-71},
  doi = {10.11648/j.jps.20190703.12},
  url = {https://doi.org/10.11648/j.jps.20190703.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20190703.12},
  abstract = {Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa) against late blight and yield. The experiments were arranged randomized complete block design in factorial with three replications. Fungicides were applied two weeks intervals starting from the onset of the disease. The integration of varieties and fungicides exhibited significant difference at (p-1) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Shewarobit. On the contrary the highest PSI (60.7%) with highest AUDPC (1373.17%-days) and the lowest yield (27 t ha-1) were obtained from untreated Margoble at Ataye, while the highest severity (69.3%) with highest AUDPC (1248.33%-days) and the lowest yield (22 t ha-1) were obtained from untreated Margoble at Shewarobit. As compared to yield losses from protected plots with Ridomil MZ 68%WP, the highest fruit yield loss of 44.9% at Ataye and 47% at Shewarobit were recorded from unsprayed Margoble variety. The best management of late blight and the higher yield were obtained from integration of two varieties treated with Ridomil MZ 68% WP. Thus, it is recommended to use tomato varieties with sprays Ridomil MZ 68% gave the highest protection against late blight and the highest yield benefit. However, further extensive studies have to be undertaken for late blight management options through integration of varieties and frequency of fungicide applications that may contribute to sustainability of tomato production in the country.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia
AU  - Daniel Keskse
AU  - Negash Hailu
AU  - Eshetu Belete
Y1  - 2019/07/10
PY  - 2019
N1  - https://doi.org/10.11648/j.jps.20190703.12
DO  - 10.11648/j.jps.20190703.12
T2  - Journal of Plant Sciences
JF  - Journal of Plant Sciences
JO  - Journal of Plant Sciences
SP  - 63
EP  - 71
PB  - Science Publishing Group
SN  - 2331-0731
UR  - https://doi.org/10.11648/j.jps.20190703.12
AB  - Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa) against late blight and yield. The experiments were arranged randomized complete block design in factorial with three replications. Fungicides were applied two weeks intervals starting from the onset of the disease. The integration of varieties and fungicides exhibited significant difference at (p-1) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Shewarobit. On the contrary the highest PSI (60.7%) with highest AUDPC (1373.17%-days) and the lowest yield (27 t ha-1) were obtained from untreated Margoble at Ataye, while the highest severity (69.3%) with highest AUDPC (1248.33%-days) and the lowest yield (22 t ha-1) were obtained from untreated Margoble at Shewarobit. As compared to yield losses from protected plots with Ridomil MZ 68%WP, the highest fruit yield loss of 44.9% at Ataye and 47% at Shewarobit were recorded from unsprayed Margoble variety. The best management of late blight and the higher yield were obtained from integration of two varieties treated with Ridomil MZ 68% WP. Thus, it is recommended to use tomato varieties with sprays Ridomil MZ 68% gave the highest protection against late blight and the highest yield benefit. However, further extensive studies have to be undertaken for late blight management options through integration of varieties and frequency of fungicide applications that may contribute to sustainability of tomato production in the country.
VL  - 7
IS  - 3
ER  -

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