Journal of General Plant Pathology

, Volume 72, Issue 3, pp 137–142 | Cite as

Suppressive effect of liquid potassium silicate on powdery mildew of strawberry in soil

  • Takeshi KantoEmail author
  • Akihiro Miyoshi
  • Takuya Ogawa
  • Kazumasa Maekawa
  • Masataka Aino


A soil drench of soluble silicon (liquid potassium silicate) was tested for the control of powdery mildew of strawberry in soil for 2 years in a vinyl house under growers' conditions on two cultivars: very susceptible Toyonoka and slightly susceptible Sachinoka. Soluble silicon suppressed the disease more effectively as a preventive control than as a control to reduce initial incidence. The suppressive effect against this disease was more effective for Toyonoka than for Sachinoka. The control value of soluble potassium silicate was 85.6% for Toyonoka in the first year and 60.2% in the second year, while for Sachinoka it was 58% in the first year and 40.6% in the second year. Strawberry leaf hardness was measured for the control and silicate-treated leaves. Although silicate-treated leaves seemed to be harder than control leaves, leaf hardness did not vary significantly between controls and silicate-treated leaves in either of the 2 years, and the mode of preventive action of liquid potassium silicate remains unknown. A factor other than a physical action may be involved.

Key words

Powdery mildew Soluble potassium silicate Soil drenching Cultivar 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Adatia, MH, Besford, RT 1986The effects of silicon on cucumber plants grown in recirculating nutrient solutionAnn Bot58343351Google Scholar
  2. Akai, S 1953Studies on Helminthosporium blight of rice plants (in Japanese with English summary)Ann Phytopathol Soc Jpn17109112Google Scholar
  3. Bélanger, RR, Bowen, PA, Ehret, DL, Menzies, JG 1995Soluble silicon: its role in crop and disease management of greenhouse cropsPlant Dis79329336CrossRefGoogle Scholar
  4. Bélanger, RR, Benhamou, N, Menzies, JG 2003Cytological evidence of an active role of silicon in wheat resistance to powdery mildew (Blumeria graminis f. sp. tritici)Phytopathology93402412PubMedGoogle Scholar
  5. Chérif, M, Bélanger, RR 1992Use of potassium silicate amendments in recirculating nutrient solutions to suppress Pythium ultimum on long English cucumberPlant Dis7610081011CrossRefGoogle Scholar
  6. Creelman, RR, Mullet, JE 1997Biosynthesis and action of jasmonates in plantsAnnu Rev Plant Mol Biol48355381CrossRefGoogle Scholar
  7. Fawe, A, Abou-Zaid, M, Menzies, JG, Bélanger, RR 1998Silicon mediated accumulation of flavonoid phytoalexins in cucumberPhytopathology88396401PubMedGoogle Scholar
  8. Hasama, W, Morita, S, Kato, T 1993Resistance to Corynespora target leaf spot in cucumber grafted on a bloomless rootstock (in Japanese with English summary)Ann Phytopath Soc Jpn59243248Google Scholar
  9. Hayasaka, T, Fujii, H, Namai, T 2005Silicon content in rice seedlings to protect rice blast fungus at the nursery stageJ Gen Plant Pathol71169173CrossRefGoogle Scholar
  10. Jhooty, JS, Mckeen, WE 1965Studies on powdery mildew of strawberry caused by Sphaerotheca macularis Phytopathology55281285Google Scholar
  11. Kanto, T, Miyoshi, A, Ogawa, T, Maekawa, K, Aino, M 2004Suppressive effect of potassium silicate on powder mildew of strawberry in hydroponicsJ Gen Plant Pathol70207211CrossRefGoogle Scholar
  12. Kawashima, R 1927Effect of silicate against rice blast (in Japanese)Soil Sci Plant Nutr18691Google Scholar
  13. Kunoh, H 2004Infection process of plant pathogenic fungi and association of inorganic elements (in Japanese) eds. Relationship between mineral nutrition and plant diseaseHakuyushaTokyo4174Google Scholar
  14. Maekawa, K, Ogawa, K, Watanabe, K, Kanto, T, Aino, M, Iwamoto, Y 2002Silicon-dependent promotion of superoxide generation following the inoculating of Magnaporthe grisea into rice leaves (in Japanese with English summary)Jpn Soil Sci Plant Nutr73509514Google Scholar
  15. Maekawa, K, Watanabe, K, Kanto, T, Aino, M, Saigusa, M 2003Effect of soluble silicic acid on suppression of rice leaf blast (in Japanese with English summary)Jpn Soil Sci Plant Nutr74293299Google Scholar
  16. Miyake, Y, Takahashi, E 1983aEffect of silicon on the growth of solution-cultured cucumber plantsSoil Sci Plant Nutr297183Google Scholar
  17. Miyake, Y, Takahashi, E 1983bEffect of silicon on the growth of cucumber plant in soil cultureSoil Sci Plant Nutr29463471Google Scholar
  18. Samuels, AL, Glass, ADM 1991Distribution of silicon in cucumber leaves during infection by powdery mildew fungus (Sphaerotheca fuliginea)Can J Bot69140146Google Scholar
  19. Shirai, K, Takeuchi, T, Shimizu, M, Takeuchi, H, Miyamori, Y 1999Relation between sheath brown rot disease and yield of rice and concentration of silicic acid and nitrogen in rice on the disease development (in Japanese)Ann Rep Plant Prot North Jpn504346Google Scholar
  20. Takahashi, E 1987The silicate plants and calcium plants (in Japanese)NobunkyoTokyo55176Google Scholar
  21. Wang, SW, Galleta, GJ 1998Foliar application of potassium silicate induces metabolic changes in strawberry plantsJ Plant Nutr21157167CrossRefGoogle Scholar
  22. Zeyen, RJ, Carver, TLW, Lyngkjaer, MF 2002The formation and role of papillaeBélanger, RRBushnell, WRDik, AJCarver, TLW eds. The powdery mildewsAPSSt. Paul, MN107125Google Scholar

Copyright information

© The Phytopathological Society of Japan and Springer-Verlag Tokyo 2006

Authors and Affiliations

  • Takeshi Kanto
    • 1
    Email author
  • Akihiro Miyoshi
    • 1
  • Takuya Ogawa
    • 1
  • Kazumasa Maekawa
    • 1
  • Masataka Aino
    • 1
  1. 1.Hyogo Prefectural Technology Center for AgricultureForestry, and FisheriesHyogoJapan

Personalised recommendations