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Build-up and decline ofRhizoctonia solani inoculum under field conditions

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Summary

Inoculum potential ofRhizoctonia solani Kühn was studied in an infested carnation field during two successive growth seasons. This inoculum potential was expressed as diseased carnation plants in the field and diseased bean seedlings planted in soil samples. Disease incidence in the field soil samples increased during the first season, up to 60% and 100%, respectively. Removing the carnation plants and keeping the soil wet for 45 days, resulted in a sharp decline in inoculum potential.

Both inoculum potential and disease incidence in carnations were lower after plant removal. The use of either methyl bromide or vapam resulted in complete control of the disease and reduced inoculum potential. Results suggest possible reduction ofR. solani inoculum by maintaining the soil moist between growth periods.

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Authors and Affiliations

  1. The Extension Service, Ministry of Agriculture, Rehovot

    Ester Hadar (Plant Protection Adviser)

  2. Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, Fac. of Agric., 76100, Rehovot, Israel

    I. Chet (Professor)

Authors
  1. Ester Hadar
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  2. Y. Elad
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  3. Y. Hadar
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  4. I. Chet
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Hadar, E., Elad, Y., Hadar, Y. et al. Build-up and decline ofRhizoctonia solani inoculum under field conditions. Plant Soil 65, 303–307 (1982). https://doi.org/10.1007/BF02375051

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  • DOI: https://doi.org/10.1007/BF02375051

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