Indian Phytopathology

, Volume 71, Issue 1, pp 163–165 | Cite as

Performance of plant defence activators against Podosphaera pannosa causing rose powdery mildew

  • Vijay Kumar
  • Sunita Chandel


Different plants defence activators were evaluated against the rose powdery mildew (Podosphaera pannosa) under green house conditions. Plant defence activators were tested at two concentrations i.e. 0.050 and 0.075% before the appearance of disease. The highest disease control of 78.48% was recorded in the plants sprayed with dipotassium orthophosphate followed by salicylic acid (74.62%), β-aminobutyric acid (72.16%), potassium silicate (64.69%) and potassium bicarbonate (66.79%) at concentration of 0.075% in two consecutive years (2015, 2016). The least disease control (54.95%) was observed in treatment with calcium silicate. At lower concentration (0.05%) disease control was comparatively lesser than the higher concentration of the plant defence activators. First spray of the SAR chemical was effective for 21 days and after that the disease appeared.


Conidia Disease control Plant defence activators Rose powdery mildew 


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Copyright information

© Indian Phytopathological Society 2018

Authors and Affiliations

  1. 1.Department of Plant PathologyDr. Y.S. Parmar University of Horticulture and ForestrySolanIndia

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