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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 adopti

08
Jul

Management Options for Bacterial Leaf Streak

Management Options for Bacterial Leaf Streak

Bacterial Leaf Streak of rice management options includes

  • cultural practices,
  • chemical control and
  • the use of resistant varieties
08
Jul

Disease cycle of Bacterial Leaf Streak

Disease cycle of Bacterial Leaf Streak

1. The primary infection of the disease comes through infected seeds.

2. Secondary spread occurs through rain and irrigation water and also through contact between healthy and diseased plants.

3. The bacteria enter the host tissues through stomata or wounds, and multiply in the parenchymatous tissues.

 

07
Jul

Pre-disposing factors and Alternate hosts for Bacterial Leaf Streak

Predisposing Factors of Bacterial Leaf Streak

Factors which favor the development of Bacterial Leaf Streak of rice.

1. Strong winds, heavy rains, and deep water.

2. High temperature and humidity.

3. Presence of the bacteria on leaves and in water.

4. Sources of inoculum (volunteer plants, infected straws, weeds, etc.).

5. High amount of fertilizer application (excessive use of N).

6. Poor handling during transplanting (wounde

07
Jul

Causal organism and Symptoms of Bacterial Leaf Streak

Causal organism of Bacterial Leaf Streak

Causal organism for Bacterial Leaf Streak of rice is Xanthomonas oryzae pv. oryzicola

Symptoms of Bacterial Leaf Streak

1. The disease is observed late in the season on leaves, interveinal, translucent, water soaked narrow streaks appear, which gradually turn olive brown.

2. The number of streaks is more towards the tip of the leaf which coalesces and the

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