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02
Aug

Rice Hispa

 

1. Rice hispa a serious pest in some areas of the Gurdaspur and Amritsar districts and is also found in the other rice growing areas of the state.

2. The grubs of this pest tunnel in to the leaves, whereas the adults are exposed feeders. The grubs cause damage by producing bold, white streaks on the leaves.

3. If the attack starts in the

02
Aug

Plant hoppers

 

1. These hoppers include, whitebacked plant hopper and brown planthopper. Both nymphs and adults of these pests suck the cell sap particularly from the leaf-sheath from July to October. 2. The crop dries up in patches. As the plants dry up, the hoppers migrate to the adjoining plants and kill them. In a few days, the area of the dry patches enlarges.
02
Aug

Rice stemborer

 

1. The larvae of these insects bore into the stem and cause damage from July to October.

2. The affected young plants show dead-hearts (yellowing and drying of central shoot) whereas the old ones produce empty earheads which turn white and stand erect.

3. The fields showing more than 5% dead hearts (economic threshold level) should be spray

02
Aug

Insect Pests of Punjab State

Important insect pests of punjab state are

1. Rice stemborer .

2. Leaf Folder.

3. Plant hoppers.

4. Grasshoppers.

5. Rice Hispa.

6. Rice root weevil.

7. Rice-ear-cutting-caterpillar

02
Aug

Insect Pests of Punjab State

Important insect pests of punjab state are 1. Rice stemborer 2. Leaf Folder 3. Plant hoppers 4. Grasshoppers 5. Rice Hispa 6. Rice root weevil 7. Rice-ear-cutting-caterpillar
02
Aug

Bunt or Kernel Smut (Neovossia horrida)

1. Only a few grains in the panicle are infected. Frequently, only a part of the grain is replaced by a black powder. 2. Sometimes, entire grain is also attacked and the black powder scatters on to other grains or leaves, and this is often the easiest way to detect the disease in the field. 3. The disease incidence is more on short duration varieties, planted early. Also avoid heavy doses of nitrogenous fertilizers. 4. Two sprays of Tilt 25 EC @ 200 ml in 200 litres of water/acre at
02
Aug

False smut (Ustilaginoidea virens)

 

1. Its incidence is increasing on high-yielding rice varieties. The fungus transforms the individual grains in to large greenish velvety spore-balls. 2. High relative humidity, rainy and cloudy days during the flowering period increase the incidence of the disease. 3. The application of organic manures and high dose of nitrogenous fertilizers also increase the intensi
02
Aug

Stem rot (Sclerotium oryzae)

 

1. The fungus affects the stem at earing and black lesions are produced on the sheath at water level.

2. Later on, the stem gets infected and rots leading to withering and lodging of the plant.

3. The incidence of this disease has declined on high yielding varieties due to improved cultural practices. Prefer to grow tolerant varieties of the Basmati gr

02
Aug

Sheath rot (Sarocladium oryzae)

 

1. The rot occurs on the uppermost leaf-sheaths where oblong to irregular and grey-brown to light-brown lesions develop.

2. The lessons often coalesce to cover the entire sheath. In severe cases, young panicles either do not emerge or emerge partially.

3. A white- powdery growth of the fungus appears on the panicle inside the sheath. The glumes of infected flo

02
Aug

Sheath blight (Corticium sasakii)

 

1. Greyish green lesions with purple margin develop on the leaf-sheath above the water level. Later, the lesions enlarge and coalesce with other lesions.

2. The symptoms are usually not distinct till flowering. Its severe attack results in the poor filling of the grains.

3. Burn the rice straw and stubbles after harvesting the affected crop. Avoid the exces

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