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30
Jul

History, distribution and occurrence of Bacterial Leaf Streak of Rice

1. The disease was first described as stripe disease by Reinking in 1918 from the Philippines. Identification and description of the causal organism was given by Fang et al from China in 1957. 2. In India, it was first reported by Srivastava et al (1967) who noticed its occurrence in U.P, Madhya Pradesh, Maharashtra and Bihar. 3. Shekhawat and Srivastav (1971, 1972) Chattopadhyaya and Mukharji (1968) observed it in Mysore, Haryana, Andhra Pradesh, West Bengal and Orissa. 4. Now it is a ma
30
Jul

Bacterial Leaf Streak of Rice

1. Bacterial Leaf Streak (BLS) initited by Xanthomonas oryzae pv. Oryzicola is important bacterial disease next to preventing the realisation of high yielding potential offered by intensive cultivation. 2. Though it is less devastating than Blb, it causes substantial yield losses and is a major constraint in production.
30
Jul

White–tip nematode

 

Scientific name : Aphelenchoides besseyi

Local name :

Damage of White–tip nematode:

1. The nematode feeds on the growing apical bud inside the leaf whorl, so the tip of the emerging leaf becomes whitish or whip like called white tip during nursery or early tillering stage.

2. At late stage

30
Jul

White–tip nematode

 

Scientific name : Aphelenchoides besseyi

Local name :

Damage of White–tip nematode:

1. The nematode feeds on the growing apical bud inside the leaf whorl, so the tip of the emerging leaf becomes whitish or whip like called white tip during nursery or early tillering stage.

2. At late stage

30
Jul

Rice Nematodes

There are three major nematodes in rice crop

1. White–tip nematode.

2. Ufra nematode.

3. Rice root-knot nematode.

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