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Disease

Disease

Blast management in organic basmati rice

Submitted by akanksha on Wed, 08/07/2009 - 15:32
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Rice blast

Causal organism: Pyricularia oryzae (magnaporthe grisa)

Bacterial leaf blight management in organic basmati rice

Submitted by akanksha on Wed, 08/07/2009 - 15:27
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Bacterial blight

Causal organism: Xanthomonas oryzae cv. Oryzal

Tungro disease management in organic basmati rice

Submitted by akanksha on Wed, 08/07/2009 - 12:49
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Tungro:

Symptoms:

  • Tungro stunts rice plants and changed the leaf colour to shades of yellow or orange.

False smut of Rice

Submitted by naipictuasdharwad on Mon, 16/03/2009 - 13:28
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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

Submitted by naipictuasdharwad on Mon, 16/03/2009 - 13:13
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Rice blast: Magnaporthe grisea (Hebert) Barr

Stem rot

Submitted by naipictuasdharwad on Mon, 16/03/2009 - 13:03
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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

White tip nematode of rice

Submitted by vivek on Wed, 03/12/2008 - 12:00
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Rice White Tip Nematode

Scientific name: Aphelenchoides besseyi

 This is one of the economically important nematode parasite infecting rice crops throughout the world. This nematode was first reported on rice from Japan, and an extensive work has been carried out on this nematode pest.

Rice ragged stunt

Submitted by yogesh on Wed, 03/12/2008 - 10:46
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Rice ragged stunt

Causal agent:  Ragged stunt virus   

The brown plant hopper transmits the disease. The early in star nymphs of the insect are more efficient in transmitting the disease than older ones. Five-day-old nymphs are the most efficient transmitters. The virus is acquired within a feeding period of 24 hours.

Brown spot of rice

Submitted by vivek on Tue, 02/12/2008 - 16:13
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Causal organism: Helminthosporium oryzae

Stem rot

Submitted by yogesh on Tue, 02/12/2008 - 15:44
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Causal organism -  Sclerotium oryzae

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