Rice blast: Magnaporthe grisea (Hebert) Barr (Deuteromycotina: Moniliales: Moniliaceae)

Kannada Name: Benki Roga

Stem rot:

Causal organism: Helminthosporium sigmoideum var. irregular (Leptospheria salvinic or Magnaportha salvinii)

Brown leaf spot:

Causal organism: Helminthosporium oryzae (Cochliobolus miyabeanus)

False smut

Causal organism: Ustilaginoides virens

Sheath blight:

Causal organism: Rhizoctonia sohani (Thanatephorus cucumeris)

Rice blast

Causal organism: Pyricularia oryzae (magnaporthe grisa)

 

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False Smut : Ustilaginoidea virens (Cke.) Takahashi (Deuteromycotina: Moniliales: Dematiacea) Kannada Name: Kadige Roga False smut is a fungal disease and is more severe in the years of high rainfall. The farmers consider its incidence as an omen of Good Harvest.

Rice blast: Magnaporthe grisea (Hebert) Barr

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Stem rot: Sclerotium oryzae Catt (Deuteromycotina: Mycelia Sterilia) Kannada Name : Kanda Kole Roga It is an important disease particularly in water logged areas. Period of occurrence : Later stages of plant growth