Indian Phytopathology

, Volume 71, Issue 4, pp 505–512 | Cite as

Development of fungicides spray schedule to manage the late blight of potato in north eastern Himalayan region of India

  • Malkhan Singh GurjarEmail author
  • Raju Kumar
  • Deepak Singh
  • T. K. Bag
Research Article


Late blight of potato is a major disease of potato in north eastern Himalayan region of India. An experiment was carried out at Central Potato Research Station, Shillong, Meghalaya (India) during the years 2012, 2013 and 2014. Different fungicide treatments combinations were applied in potato crop at 7 days intervals. Pooled data of disease severity in cultivar Kufri Jyoti showed that first prophylactic spray with mancozeb (0.2%), second spray with dimethomorph (0.2%) + mancozeb (0.3%) and third spray with mancozeb (0.2%) was found significantly superior to reduce blight severity (39.44%) after 35 days after appearance of disease. Other fungicide treatments combinations (contact and systemic) were found significant as compared to control in Kufri Jyoti. In Pooled analysis, highest yield (35.51 t/ha) was recorded in treatment (T5; mancozeb, diemthomorph + mancozeb, mancozeb) of Kufri Jyoti. Kufri Giridhari did not respond to the fungicides significantly. Analysis of variance (ANOVA) of yield revealed that interaction between fungicides and varieties were found significant during the 2013 and 2014. All the three environments i.e. years form a single mega-environment which showed that there were significant differences in environments but not extreme differences and the order of the treatments was same across all the environments. In conclusion, newly developed fungicides spray schedule will be helpful to manage the late blight of potato and increase the potato yield in north eastern Himalayan region of India.


Potato Late blight Phytophthora infestans Fungicides Disease severity Yield 



Authors are highly thankful to the Director, ICAR-Central Potato Research Institute, Shimla and the Head, ICAR-Central Potato Research Station, Shillong (Meghalaya) for providing facilities and constant guidance during experimentation.


  1. Cooke LR, Schepers HTM, Hermansen A, Bain RA, Bradshaw NJ, Ritchie F, Shaw DS, Evenhuis A, Kessel GJT, Wander JGN, Anderson B, Hansen JG, Hannukkala A, Naerstad R, Nielsen BJ (2011) Epidemiology and integrated control of potato late blight in Europe. Potato Res 54:183–222CrossRefGoogle Scholar
  2. Fry WE, Goodwin SB, Matuszak MJ, Spielman LJ, Milgroom MG (1992) Population genetics and intercontinental migrations of Phytophthora infestans. Ann Rev Phytopathol 30:107–130CrossRefGoogle Scholar
  3. Gopal J, Singh BP (2003) Screening potatoes for resistance to late blight (Phytophthora infestans) under field conditions. Potato Res 46:47–56CrossRefGoogle Scholar
  4. Gurjar MS, Bag TK, Singh KS (2014) Progress of potato late blight on staggered planting in high hills of meghalaya. Indian J Hill Farming 27(1):254–259Google Scholar
  5. Gurjar MS, Sagar V, Bag TK, Singh BP, Sharma S, Jeevlatha A, Bakade RR, Singh KS (2015) Genetic diversity of Ralstonia solanacearum strains causing bacterial wilt of potato in the Meghalaya state of India. J Plant Pathol 97(1):135–142Google Scholar
  6. Gurjar MS, Sharma S, Kumar V (2016) Phenotyping of potato accessions for stable resistance to late blight (Phytophthora infestans). Indian Phytopathol 69(2):141–144Google Scholar
  7. Haverkort AJ, Struik PC, Visser RGF, Jacobsen E (2009). Applied biotechnology to combat late blight in potato caused by Phytophthora infestans. Potato Res 52:249–264.
  8. Kelley BS, Lee SJ, Damasceno CM, Chakravarthy S, Kim BD, Martin GB, Rose JK (2010) A secreted effector protein (SNE1) from Phytophthora infestans is a broadly acting suppressor of programmed cell death. Plant J 62:357–366CrossRefGoogle Scholar
  9. Lee SJ, Rose JK (2010) Mediation of the transition from biotrophy to necrotrophy in hemibiotrophic plant pathogens by secreted effector proteins. Plant Signal Behav 5:769–772CrossRefGoogle Scholar
  10. Malcolmson JF (1976) Assessment of field resistance to blight (Phytophthora infestans) in potatoes. Trans Bri Mycol Soc 67:321–325CrossRefGoogle Scholar
  11. SAS Institute, Inc. (1999) SAS OnlineDoc. Version 8. SAS Institute, Inc., CaryGoogle Scholar
  12. Shaner G, Finney RF (1977) The effect of nitrogen fertilization on the expression of slow mildewing resistance in knox wheat. Phytopathology 67:1051–1056CrossRefGoogle Scholar
  13. Siddique NA, Aktar MS, Swapon NH (2016) Comparative efficacy of different fungicides against late blight diseases of potato incited by Phytophthora infestans (Mont.) de Bary and its management. J Plant Pathol Microbiol 7:364Google Scholar
  14. Singh BP, Kaushik SK, Singh PH, Joseph TA (2003a) Potato late blight and its management. Indian Farm 53:19–23Google Scholar
  15. Singh PH, Chandla VK, Khurana SMP, Garg ID, Thakur KG, Singh S, Lal SS (2003b) Potato cultivation in north eastern India. ICAR-Central Potato Research Institute, Extension Bulletin No. 34(E), Shimla, pp 1–31Google Scholar
  16. Singh PH, Singh BP, Singh L (2003c) Need based application of fungicides for management of late blight in potato. J Indian Potato Assoc 30:143–144Google Scholar
  17. Yan W (2002) Singular value partitioning for biplot analysis of multi-environment trial data. Agron J 94:990–996CrossRefGoogle Scholar
  18. Yan W, Kang MS (2003) GGE biplot analysis: a graphical tool for breeders, geneticists, and agronomists. CRC Press, Boca RatonGoogle Scholar
  19. Yan W, Hunt LA, Sheng Q, Slavnics Z (2000) Cultivar evaluation and mega-environment investigation based on the GGE biplot. Crop Sci 40:597–605CrossRefGoogle Scholar
  20. Yan W, Pageau D, Fregeau-Reid J, Lajeunesse J, Goulet J, Durand J, Marois D (2011) Oat mega-environments and test-locations in Quebec. Can J Plant Sci 91:643–649CrossRefGoogle Scholar
  21. Yang RC, Crossa J, Cornelius PL, Burgueno J (2009) Biplot analysis of genotype environment interaction: proceed with caution. Crop Sci 49:1564–1576CrossRefGoogle Scholar

Copyright information

© Indian Phytopathological Society 2018

Authors and Affiliations

  • Malkhan Singh Gurjar
    • 1
    Email author
  • Raju Kumar
    • 2
  • Deepak Singh
    • 2
  • T. K. Bag
    • 1
  1. 1.Division of Plant PathologyICAR-Indian Agricultural Research InstituteNew DelhiIndia
  2. 2.ICAR-Indian Agricultural Statistics Research InstituteNew DelhiIndia

Personalised recommendations