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18
Jul

Symptoms of Foot Rot Bakanae disease in Karnataka

1. On rice, G. fujikuroi causes bakanae, foot rot, seedling rot, grain sterility and discoloration (Ou, 1985). Seedlings with bakanae in the seedbed are several inches taller than normal plants, thin and yellowish-green.

2. Affected seedlings are very conspicuous, and are scattered throughout the field. Severely diseased seedlings die before transplanting, and th

18
Jul

Symptoms of Foot Rot Bakanae disease in Karnataka

1. On rice, G. fujikuroi causes bakanae, foot rot, seedling rot, grain sterility and discoloration (Ou, 1985). Seedlings with bakanae in the seedbed are several inches taller than normal plants, thin and yellowish-green.

2. Affected seedlings are very conspicuous, and are scattered throughout the field. Severely diseased seedlings die before transplantin

18
Jul

Foot Rot Bakanae Disease in Karnataka

 

Common names: Bakanae disease of rice, Pokkah boeng, White stalk of rice, Sett rot of sugarcane, Stalk rot of maize, Maize stalk rot, Stem rot of rice, Stem and Ear rot of sweet corn, Pseudo-stem rot of plantain.

Distribution and Occurrence: In Karnataka, the disease is scattered in few rainfed rice growing regions (Suseelendra et

18
Jul

Control measures for Sheath Rot disease in Karnataka

1. Application of carbendazim, twice at fortnightly intervals commencing from boot leaf stage would be effective.

2. Other products found useful in reducing the sheath rot infection are thiophanate-methyl, ediphenphos, hexaconazole, propiconazole and mancozeb.

3. The hybrids, KRH 2, NSD 2, PA 6444 and Indam 100-003 were found moderately resistant to sheath rot.

18
Jul

Symptoms of Sheath Rot disease


1. S. oryzae mainly attacks the uppermost leaf sheaths enclosing the young panicles.

2. The lesions start as oblong or somewhat irregular spots 0.5-1.5 cm long, with brown margins and grey centres, or they may be greyish-brown throughout (Ou, 1985).

3. They enlarge and often coalesce and may cover most of the leaf sheath. The young p

18
Jul

Rice Sheath Rot

Common names of Sheath Rot : Rice sheath rot, Sheath rot.

Distribution and Occurrence of Sheath Rot: Present in Karnataka and widely distributed (Sanne Gowda, 1979).

Causal organism: Sarocladium oryzae .

The young panicles are generally affected, leading to an increase the percentage of chaffy, discolored, and shrivelled grains and a reducti

18
Jul

Control Measures for Narrow Brown Spot

Control Measures for Narrow Brown Spot include cultural and chemical practices.

Cultural practices, such as the use of potassium and phosphorus fertilizers, and planting of early maturing cultivars early in the growing season, could manage this disease effectively.

Chemical Measures: Spraying of fungicides like Benomyl, Propicanazole, Carbendazim, Propiconazole, and Iprodione, when the disease is observed in the field as effective. Mancozeb 2 1g / lit of water at the time of fl

18
Jul

Symptoms of Narrow Brown Spot in Karnataka

 

1. After infection with C. oryzae, linear leaf lesions develop which are 2-10 mm long and usually not more than 1-1.5 mm wide. The long axis is parallel to that of the leaf. 2. Lesions have a dark-brown centre with the border fading as the outer margin is reached. Lesions on the sheath are similar to those on the leaf, while lesions on the g
18
Jul

Narrow Brown Spot Disease in Karnataka

1. Distribution and Occurrence of narrow brown spot disease: Present in Karnataka (Sanne-Gowda et al., 1973).

2. Common names of narrow brown spot disease: narrow brown leaf spot, cercospora leaf spot, ear blight.

3. Causal organism : Cercospora janseana

18
Jul

Control Measures of Rice Leaf scald disease

1. Chemicals such as Benomyl, Carbendazim, Quitozene, and Thiophanate-methyl can be used to treat the seeds to eliminate the disease.

2. In the field, spraying of Benomyl, Fentin Acetate, Edifenphos, and Validamycin significantly reduce the incidence of leaf scald.

3. Foliar application of Captafol, Mancozeb, and Copper Oxychloride also reduces the incidence and severity of the fungal disease.

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