Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda

Arinaitwe Abel Byarugaba; Mateeka Benon; Tibanyedera Deo; Barekye Alex

doi:doi:10.11648/j.aff.20180703.13

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Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda

Arinaitwe Abel Byarugaba, Mateeka Benon, Tibanyedera Deo, Barekye Alex

Published in Agriculture, Forestry and Fisheries (Volume 7, Issue 3)

Received: 16 February 2018 Accepted: 29 March 2018 Published: 26 September 2018

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Abstract

Late blight (Phytophthora infestans) is one of the major diseases of economic importance limiting potato production in Uganda and causing yield losses of 40-60%. The emergence of more aggressive late blight pathotypes that are more difficult to control with ability to overcome host resistance or resist fungicide active ingredients has been noted in Uganda. Therefore, this study was carried out to identify suitable fungicides and spray regime for the effective management of late blight pathotypes on susceptible potato varieties in Uganda. Different fungicides that known to control late blight include Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w), Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w), Mancozeb (Dithiocarbamate 800g/kg), Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) were acquired from Bayer Crop Sciences and agro-inputs dealers in Uganda and tested for effective management of late blight on susceptible potato varieties in four different sites for two seasons (2015B and 2016A) using randomized complete block design (RCBD). Three (3) spraying regimes were tested and included; Bayer Crop Sciences recommended spray regime, current Uganda’s recommended spray regime, Hybrid (blend of Uganda’s recommended spray regime and Bayer recommendation) and no spray as control. Data on late blight disease severity was measured as percentage plant area affected (PLAA) and this was converted in to area under disease progress curve (AUDPC). The results showed that area under disease progress curve (AUDPC) ranged from 357-763 for the 3 different spray regimes while for the control (No spray), it ranged from 1895-2231. The late blight disease severity varied across sites and seasons, with Kalegyere site recording highest disease pressure in season 1 while Buginyanya had highest disease severity in season 2. Lowest disease pressure was registered with Bayer Crop Sciences based spray regime in season 1, while in season 2, hybrid spray regime registered lowest disease pressure. Use of multiple fungicide ingredients (Mancozeb (Dithiocarbamate 800g/kg), Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w); Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w) and Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) at different intervals has demonstrated the potential to suppress the disease to levels not causing serious economic damages by not allowing significant disease development on the leaves, hence has been recommended to be used for the management of late blight in Uganda.

Published in	Agriculture, Forestry and Fisheries (Volume 7, Issue 3)
DOI	10.11648/j.aff.20180703.13
Page(s)	82-88
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), 2018. Published by Science Publishing Group

Keywords

Late Blight, Spray Regimes, Disease Pressure, Fungicide, Disease Management

References

[1]	Brent, K. J., & Hollomon, D. W. (1995). Fungicide resistance in crop pathogens: How can it be managed?. Brussels: GIFAP.
[2]	Byarugaba, A. A., Prossy, N., & Kashaija, I. N. (2013). Identification of potato clones of population B3C2 with durable field resistance to late blight (Phytophthora infestans) and high yields in Uganda, 8 (23), 3055–3059. http://doi.org/10.5897/AJAR2013.6917.
[3]	Campbell, C. L and Madden. V, 1990. Introduction to Potato disease Epidemiology. John Wiley and sons, New York. 532pp.
[4]	Forbes, G. A. (2012). Using host resistance to manage potato late blight with particular reference to developing countries. Potato Research, 55 (3-4), 205-216.
[5]	Fry, W. E., Birch, P. R. J., Judelson, H. S., Grünwald, N. J., Danies, G., Everts, K. L.,... & McGrath, M. T. (2015). Five reasons to consider Phytophthora infestans a reemerging pathogen. Phytopathology, 105 (7), 966-981.
[6]	Gopal. J and B. E. Singh. 2003. Screening potatoes for resistance to late blight (Phytophthora infestans) under field conditions. Potato research 46 (2003/4) 47-56.
[7]	Haverkort, A. J., Boonekamp, P. M., Hutten, R., Jacobsen, E., Lotz, L. A. P., Kessel, G. J. T. & Van der Vossen, E. A. G. (2008). Societal costs of late blight in potato and prospects of durable resistance through cisgenic modification. Potato Research, 51 (1), 47-57.
[8]	Henfling, J. W. 1987. Late blight of potato, Phytophthora infestans Technical information bulletin 4. CIP, Lima, Peru.
[9]	Kankwatsa, P., J. J. Hakiza, M. Olanya, H. M. Kidenamariam, and E. Adipala. "Efficacy of different fungicide spray schedules for control of potato late blight in Southwestern Uganda." Crop Protection 22, no. 3 (2003): 545-552.
[10]	Landeo J. A and Forbes, G. A. 2006. Late Blight. Pages 279-320 in: Handbook of Potato production, Improvement, and Postharvest Management. J. Gopal and K. S. M. P., eds. Haworth Press Inc., Binghamton, NY.
[11]	Namanda, S., Olanya, O. M., Adipala, E., Hakiza, J. J., El-Bedewy, R., Baghsari, A. S., & Ewell, P. (2004). Fungicide application and host-resistance for potato late blight management: benefits assessment from on-farm studies in SW Uganda. Crop Protection, 23 (11), 1075-1083.
[12]	Njoroge, A. W., Tusiime, G., Forbes, G. A., & Yuen, J. E. (2015). Displacement of US‐1 clonal lineage by a new lineage of Phytophthora infestans on potato in Kenya and Uganda. Plant Pathology.
[13]	Olson, B. D. (2000). Crop disease and yield loss. Biotic Stress and Yield Loss, 15.

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APA Style

Arinaitwe Abel Byarugaba, Mateeka Benon, Tibanyedera Deo, Barekye Alex. (2018). Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda. Agriculture, Forestry and Fisheries, 7(3), 82-88. https://doi.org/10.11648/j.aff.20180703.13

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ACS Style

Arinaitwe Abel Byarugaba; Mateeka Benon; Tibanyedera Deo; Barekye Alex. Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda. Agric. For. Fish. 2018, 7(3), 82-88. doi: 10.11648/j.aff.20180703.13

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AMA Style

Arinaitwe Abel Byarugaba, Mateeka Benon, Tibanyedera Deo, Barekye Alex. Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda. Agric For Fish. 2018;7(3):82-88. doi: 10.11648/j.aff.20180703.13

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@article{10.11648/j.aff.20180703.13,
  author = {Arinaitwe Abel Byarugaba and Mateeka Benon and Tibanyedera Deo and Barekye Alex},
  title = {Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda},
  journal = {Agriculture, Forestry and Fisheries},
  volume = {7},
  number = {3},
  pages = {82-88},
  doi = {10.11648/j.aff.20180703.13},
  url = {https://doi.org/10.11648/j.aff.20180703.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aff.20180703.13},
  abstract = {Late blight (Phytophthora infestans) is one of the major diseases of economic importance limiting potato production in Uganda and causing yield losses of 40-60%. The emergence of more aggressive late blight pathotypes that are more difficult to control with ability to overcome host resistance or resist fungicide active ingredients has been noted in Uganda. Therefore, this study was carried out to identify suitable fungicides and spray regime for the effective management of late blight pathotypes on susceptible potato varieties in Uganda. Different fungicides that known to control late blight include Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w), Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w), Mancozeb (Dithiocarbamate 800g/kg), Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) were acquired from Bayer Crop Sciences and agro-inputs dealers in Uganda and tested for effective management of late blight on susceptible potato varieties in four different sites for two seasons (2015B and 2016A) using randomized complete block design (RCBD). Three (3) spraying regimes were tested and included; Bayer Crop Sciences recommended spray regime, current Uganda’s recommended spray regime, Hybrid (blend of Uganda’s recommended spray regime and Bayer recommendation) and no spray as control. Data on late blight disease severity was measured as percentage plant area affected (PLAA) and this was converted in to area under disease progress curve (AUDPC). The results showed that area under disease progress curve (AUDPC) ranged from 357-763 for the 3 different spray regimes while for the control (No spray), it ranged from 1895-2231. The late blight disease severity varied across sites and seasons, with Kalegyere site recording highest disease pressure in season 1 while Buginyanya had highest disease severity in season 2. Lowest disease pressure was registered with Bayer Crop Sciences based spray regime in season 1, while in season 2, hybrid spray regime registered lowest disease pressure. Use of multiple fungicide ingredients (Mancozeb (Dithiocarbamate 800g/kg), Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w); Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w) and Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) at different intervals has demonstrated the potential to suppress the disease to levels not causing serious economic damages by not allowing significant disease development on the leaves, hence has been recommended to be used for the management of late blight in Uganda.},
 year = {2018}
}

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TY  - JOUR
T1  - Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda
AU  - Arinaitwe Abel Byarugaba
AU  - Mateeka Benon
AU  - Tibanyedera Deo
AU  - Barekye Alex
Y1  - 2018/09/26
PY  - 2018
N1  - https://doi.org/10.11648/j.aff.20180703.13
DO  - 10.11648/j.aff.20180703.13
T2  - Agriculture, Forestry and Fisheries
JF  - Agriculture, Forestry and Fisheries
JO  - Agriculture, Forestry and Fisheries
SP  - 82
EP  - 88
PB  - Science Publishing Group
SN  - 2328-5648
UR  - https://doi.org/10.11648/j.aff.20180703.13
AB  - Late blight (Phytophthora infestans) is one of the major diseases of economic importance limiting potato production in Uganda and causing yield losses of 40-60%. The emergence of more aggressive late blight pathotypes that are more difficult to control with ability to overcome host resistance or resist fungicide active ingredients has been noted in Uganda. Therefore, this study was carried out to identify suitable fungicides and spray regime for the effective management of late blight pathotypes on susceptible potato varieties in Uganda. Different fungicides that known to control late blight include Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w), Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w), Mancozeb (Dithiocarbamate 800g/kg), Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) were acquired from Bayer Crop Sciences and agro-inputs dealers in Uganda and tested for effective management of late blight on susceptible potato varieties in four different sites for two seasons (2015B and 2016A) using randomized complete block design (RCBD). Three (3) spraying regimes were tested and included; Bayer Crop Sciences recommended spray regime, current Uganda’s recommended spray regime, Hybrid (blend of Uganda’s recommended spray regime and Bayer recommendation) and no spray as control. Data on late blight disease severity was measured as percentage plant area affected (PLAA) and this was converted in to area under disease progress curve (AUDPC). The results showed that area under disease progress curve (AUDPC) ranged from 357-763 for the 3 different spray regimes while for the control (No spray), it ranged from 1895-2231. The late blight disease severity varied across sites and seasons, with Kalegyere site recording highest disease pressure in season 1 while Buginyanya had highest disease severity in season 2. Lowest disease pressure was registered with Bayer Crop Sciences based spray regime in season 1, while in season 2, hybrid spray regime registered lowest disease pressure. Use of multiple fungicide ingredients (Mancozeb (Dithiocarbamate 800g/kg), Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w); Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w) and Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) at different intervals has demonstrated the potential to suppress the disease to levels not causing serious economic damages by not allowing significant disease development on the leaves, hence has been recommended to be used for the management of late blight in Uganda.
VL  - 7
IS  - 3
ER  -

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Author Information

Arinaitwe Abel Byarugaba

Kachwekano Zonal Agricultural Research and Development Institute, Kabale, Uganda
Mateeka Benon

Kachwekano Zonal Agricultural Research and Development Institute, Kabale, Uganda
Tibanyedera Deo

International Fertilizer Development Centre (IFDC), Kampala, Uganda
Barekye Alex

Kachwekano Zonal Agricultural Research and Development Institute, Kabale, Uganda

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APA Style

Arinaitwe Abel Byarugaba, Mateeka Benon, Tibanyedera Deo, Barekye Alex. (2018). Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda. Agriculture, Forestry and Fisheries, 7(3), 82-88. https://doi.org/10.11648/j.aff.20180703.13

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ACS Style

Arinaitwe Abel Byarugaba; Mateeka Benon; Tibanyedera Deo; Barekye Alex. Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda. Agric. For. Fish. 2018, 7(3), 82-88. doi: 10.11648/j.aff.20180703.13

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AMA Style

Arinaitwe Abel Byarugaba, Mateeka Benon, Tibanyedera Deo, Barekye Alex. Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda. Agric For Fish. 2018;7(3):82-88. doi: 10.11648/j.aff.20180703.13

Copy | Download

@article{10.11648/j.aff.20180703.13,
  author = {Arinaitwe Abel Byarugaba and Mateeka Benon and Tibanyedera Deo and Barekye Alex},
  title = {Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda},
  journal = {Agriculture, Forestry and Fisheries},
  volume = {7},
  number = {3},
  pages = {82-88},
  doi = {10.11648/j.aff.20180703.13},
  url = {https://doi.org/10.11648/j.aff.20180703.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aff.20180703.13},
  abstract = {Late blight (Phytophthora infestans) is one of the major diseases of economic importance limiting potato production in Uganda and causing yield losses of 40-60%. The emergence of more aggressive late blight pathotypes that are more difficult to control with ability to overcome host resistance or resist fungicide active ingredients has been noted in Uganda. Therefore, this study was carried out to identify suitable fungicides and spray regime for the effective management of late blight pathotypes on susceptible potato varieties in Uganda. Different fungicides that known to control late blight include Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w), Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w), Mancozeb (Dithiocarbamate 800g/kg), Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) were acquired from Bayer Crop Sciences and agro-inputs dealers in Uganda and tested for effective management of late blight on susceptible potato varieties in four different sites for two seasons (2015B and 2016A) using randomized complete block design (RCBD). Three (3) spraying regimes were tested and included; Bayer Crop Sciences recommended spray regime, current Uganda’s recommended spray regime, Hybrid (blend of Uganda’s recommended spray regime and Bayer recommendation) and no spray as control. Data on late blight disease severity was measured as percentage plant area affected (PLAA) and this was converted in to area under disease progress curve (AUDPC). The results showed that area under disease progress curve (AUDPC) ranged from 357-763 for the 3 different spray regimes while for the control (No spray), it ranged from 1895-2231. The late blight disease severity varied across sites and seasons, with Kalegyere site recording highest disease pressure in season 1 while Buginyanya had highest disease severity in season 2. Lowest disease pressure was registered with Bayer Crop Sciences based spray regime in season 1, while in season 2, hybrid spray regime registered lowest disease pressure. Use of multiple fungicide ingredients (Mancozeb (Dithiocarbamate 800g/kg), Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w); Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w) and Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) at different intervals has demonstrated the potential to suppress the disease to levels not causing serious economic damages by not allowing significant disease development on the leaves, hence has been recommended to be used for the management of late blight in Uganda.},
 year = {2018}
}

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TY  - JOUR
T1  - Responding to Late Blight Disease Pressure and Fungicide Resistance Using Multiple Fungicide Active Ingredients and Different Spraying Regimes in Uganda
AU  - Arinaitwe Abel Byarugaba
AU  - Mateeka Benon
AU  - Tibanyedera Deo
AU  - Barekye Alex
Y1  - 2018/09/26
PY  - 2018
N1  - https://doi.org/10.11648/j.aff.20180703.13
DO  - 10.11648/j.aff.20180703.13
T2  - Agriculture, Forestry and Fisheries
JF  - Agriculture, Forestry and Fisheries
JO  - Agriculture, Forestry and Fisheries
SP  - 82
EP  - 88
PB  - Science Publishing Group
SN  - 2328-5648
UR  - https://doi.org/10.11648/j.aff.20180703.13
AB  - Late blight (Phytophthora infestans) is one of the major diseases of economic importance limiting potato production in Uganda and causing yield losses of 40-60%. The emergence of more aggressive late blight pathotypes that are more difficult to control with ability to overcome host resistance or resist fungicide active ingredients has been noted in Uganda. Therefore, this study was carried out to identify suitable fungicides and spray regime for the effective management of late blight pathotypes on susceptible potato varieties in Uganda. Different fungicides that known to control late blight include Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w), Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w), Mancozeb (Dithiocarbamate 800g/kg), Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) were acquired from Bayer Crop Sciences and agro-inputs dealers in Uganda and tested for effective management of late blight on susceptible potato varieties in four different sites for two seasons (2015B and 2016A) using randomized complete block design (RCBD). Three (3) spraying regimes were tested and included; Bayer Crop Sciences recommended spray regime, current Uganda’s recommended spray regime, Hybrid (blend of Uganda’s recommended spray regime and Bayer recommendation) and no spray as control. Data on late blight disease severity was measured as percentage plant area affected (PLAA) and this was converted in to area under disease progress curve (AUDPC). The results showed that area under disease progress curve (AUDPC) ranged from 357-763 for the 3 different spray regimes while for the control (No spray), it ranged from 1895-2231. The late blight disease severity varied across sites and seasons, with Kalegyere site recording highest disease pressure in season 1 while Buginyanya had highest disease severity in season 2. Lowest disease pressure was registered with Bayer Crop Sciences based spray regime in season 1, while in season 2, hybrid spray regime registered lowest disease pressure. Use of multiple fungicide ingredients (Mancozeb (Dithiocarbamate 800g/kg), Consento (Fenamidone 6.7% w/w + Propamacarb hydrochroride 93.6% w/w); Infinito (Propamacarb (55.3% w/w + Fluopicollide (5.53% w/w) and Agrolaxzyl (Metalaxyl 80 g/kg + Mancozeb 640 g/kg WP) at different intervals has demonstrated the potential to suppress the disease to levels not causing serious economic damages by not allowing significant disease development on the leaves, hence has been recommended to be used for the management of late blight in Uganda.
VL  - 7
IS  - 3
ER  -

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