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Post Harvest Diseases:: Vegetables:: Bhendi

Rhizoctonia rot: Rhizoctonia solani
Symptom:
  • Pod - greenish color turning brown, and the infected tissues fully covered with mycelia 
  • Internally, immature seeds and placenta were infected and the diseased tissues were light brown to black  
  • Externally, mycelia tend to be fluffy and lighter in color, forming a large number of dark sclerotia on the fruit surface

Identification of pathogen:

  • The fungi produces pycnidia and sclerotia
  • Pycnidiospores - hyaline, single celled, ovate to ellipsoid

Mode of spread and survival:

  • R. solani overwinters in soils as mycelia on plant debris and as dark brown sclerotia that remain in soil for long periods
Brownish pod Internal tissue with mycelia

Management:

  • Plant debris from previous crops should be removed before planting 
  • Quintozene – sprayed in the soil before sowing-effective control
Source of Images:
Glimar P.H., Carlos A.L and Ailton R. 2007. A novel post harvest rot of okra pod caused by Rhizoctonia solani in Brazil. Fitopatol. Bra,. 32(3), pp.237-240.

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