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Varietal Resistance, Cultural Control and Chemical Control measures for Bacterial leaf

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Varietal resistance of Bacterial Leaf Streak

1. BJ, TN1, Ptb 10, CR 1001, Zenith, TKM 6 are known to be resistant to bacterial leaf steak pathogen.

2. Resistance on BJ rice was governed by three pairs of independent resistant genes. (Nayak et al 1975).

Cultural practices to control Bacterial Leaf Streak

Cultural practices for the control of Bacterial Leaf Streak of rice

1. Proper application of fertilizers and adoption of planting space, the use of resistant varieties, and hot water treated seeds can manage this disease.

2. Field sanitation is important. Ratoons, straws and volunteer seedlings left after harvest can be destroyed to minimize inoculums at the beginning of the season.

3. Good drainage system especially in seedbeds can also manage this disease.

4. Planting of resistant varieties, which are available at IRRI and at National Research Institute, is the most effective method of controlling bacterial leaf streak.

5. Fallowing field and allowing drying the field thoroughly are also recommended.

Chemical control of Bacterial Leaf Streak

Chemicals for the control of Bacterial Leaf Streak of rice

1. Copper fungicides may help prevent disease occurrence and stop further disease spread.

2. Kocide® (containing copper hydroxide) is effective against bacterial leaf diseases of rice such as leaf blight and streak.

3. Fungicide application must be done not later than 40 DAS. Beyond this, the bacteria must have taken their place inside the leaf.

File Courtesy: 
DRR training manual ( Dr. Krishnaveni)
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