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12
Jul

False Smut

False Smut

Symptoms of False Smut

1. Symptoms of the false smut will be seen only after flowering.

2. The pathogen, Ustilaginoidea virens, grows in the ovary and transforms it into large, yellowish and velvety green balls, which become greatly enlarged at later stage.

3. The spore balls are covered by a membrane in the early stages,

12
Jul

Control of Sheath Rot

Control of Sheath Rot:

1. Removal of infected stubbles after harvest and adopting optimum plant spacing can reduce the disease.

2. Application of potash at tillering stage is also recommended.

3. Foliar spray of calcium sulphate and zinc sulphate was found to control sheath rot.

4. Apply Carbendazim 50WP@ 1g/l. Other products like Thiophanate-Methyl, Ediphenphos, Hexaconazole, Propiconazole and Mancozeb, also useful in reducing sheath rot.

12
Jul

Sheath Rot

Sheath Rot

Symptoms of Sheath Rot

1. Symptoms usually develop as lesions on sheaths of lower leaves near the water line when plants are in the late tillering or early internode elongation stage of growth (approximately 10 – 15 days after flooding).

2. These lesions usually develop just below the leaf collar as oval-to-elliptical

12
Jul

Red stripe

Red stripe

Local name: Kankara tegulu

Causal organism: Microbacterium sp.

Symptoms:

1. The symptoms of red stripe appeared on leaf blades or upper parts of leaf sheaths at the heading stage in the paddy fields.

2. A typical lesion consisted of an orange to reddish-brown spot wi

12
Jul

Control measures for Stem Rot

Control of stem rot

The follwoing measures can be adopted for controlling Stem rot in Rice:

  • Summer ploughing
  • Seed treatment
  • Optimum spacing
  • Avoiding stagnation of irrigation water.
  • Timely control of insect pests like stem borer and brown plant hopper
  • Spraying with validamycin @ 2.0ml or hexaconazole @ 2.0ml or propiconazole @ 1.0ml or benomyl 1.0g or carbendazim 1.0g per litre of water.
  • Thorough coverage of the
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